Texas Instruments TMS320LC206PZA80, TMS320LC206PZ80, TMS320C206PZA80, TMS320C206PZ80 Datasheet

High-Performance Static CMOS Technology

Includes the ’320C2xLP Core CPU

TMS320C206, TMS320LC206 are Members of the ’C20x/’C2000 Platform Which Also Includes the TMS320C203/LC203 and TMS320F206 Devices

Instruction-Cycle Time 25 ns at 3.3 V

Source Code Compatible With TMS320C25 and other ’20x Devices

Upwardly Code-Compatible With TMS320C5x Devices

Four External Interrupts

TMS320C206, 5-V I/O (3.3-V core)

TMS320LC206, 3.3-V core and I/O

TMS320C206, TMS320LC206 Integrated Memory: – 544 × 16 Words of On-Chip Dual-Access

Data RAM

– 32K × 16 Words of On-Chip ROM – 4K × 16 Words of On-Chip Single-Access

Program/Data RAM

224K × 16-Bit Maximum Addressable External Memory Space – 64K Program – 64K Data – 64K Input/Output (I/O) – 32K Global

description

TMS320C206, TMS320LC206

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

32-Bit Arithmetic Logic Unit (ALU)

Accumulator

16 × 16-Bit Multiplier With a 32-Bit Product

Block Moves from Data and Program Space

TMS320C206, TMS320LC206 Peripherals: – On-Chip 20-Bit Timer – On-Chip Software-Programmable

Wait-State (0 to 7) Generator – On-Chip Oscillator – On-Chip Phase-Locked Loop (PLL) – Six General-Purpose I/O Pins – Full-Duplex Asynchronous Serial Port

(UART) – Enhanced Synchronous Serial Port

(ESSP) With Four-Level-Deep FIFOs

Input Clock Options – Options: Multiply-by-One, -Two, or -Four,

and Divide-by-Two (1, 2, 4, and 2)

Support of Hardware Wait States

Power Down IDLE Mode

IEEE 1149.1†-Compatible Scan-Based Emulation

TMS320C206, TMS320LC206 100-Pin PZ Package, Small Thin Quad Flat Package (TQFP)

Industrial Temperature Version Planned, (– 40°C to 85°C)

The Texas Instruments (TI) TMS320C206‡ and TMS320LC206‡ digital signal processors (DSPs) are fabricated with static CMOS integrated-circuit technology. The architectural design is based upon that of the TMS320C20x series and is optimized for low-power operation. The combination of advanced Harvard architecture, on-chip peripherals, on-chip memory, and a highly specialized instruction set is the basis of the operational flexibility and speed of the ’C206.

The ’C206 offers these advantages:

Enhanced TMS320 architectural design for increased performance and versatility

Advanced integrated-circuit processing technology for increased performance

’C206 devices are pin- and code-compatible with ’C203 and ’F206 devices.

Source code for the ’C206 DSPs is software-compatible with the ’C1x and ’C2x DSPs and is upwardly compatible with fifth-generation DSPs (’C5x)

New static-design techniques for minimizing power consumption and increasing radiation tolerance

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

†

IEEE Standard 1149.1-1990, IEEE Standard Test-Access Port

‡

Device numbers are hereafter referred to in the data sheet as ’C206, unless otherwise specified.

TI is a trademark of Texas Instruments Incorporated.

PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443

TMS320C206, TMS320LC206 DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

PZ PACKAGE

(TOP VIEW)

EMU0

EMU1/ OFF

TCK

TRST

TDI

TMS

TDO

CLKR

FSR

CLKX

V FSX

DD5

TOUT

RX IO0 IO1

BIO

†

A14

DIV1

A13

A12VA11

A10A9A8VA7VA6A5A4VA3A2A1A0VPSIS

TMS320C206

DD5

IO2

IO3

PLLRS

CLKIN/X2

DIV2

HOLDA

A15

76 77 78 79 80 81 82 83

84 85 86 87 88

89 90 91 92

93 94

95 96 97

98 99

EXT8

MP/MC

pins 7, 16, 35, 50, 63, and 91 represent I/O supply voltage.

DD5

†

CLKOUT1

DD5

NMI

HOLD/INT1

INT2

INT3

PZ PACKAGE

(TOP VIEW)

D0D1D2

51525354555657585960616263646566676869707172737475

DD5

READY

R/W STRB

46 45

D15

D14

D13

D12

D11

DD5

D10

D7 V

26100

25242322212019181716151413121110987654321

EMU0

EMU1/ OFF

TCK

TRST

TDI TMS TDO

CLKR

FSR

CLKX

V FSX

TOUT

IO0

IO1

BIO

A14

DIV1

A13

A12VA11

A10A9A8VA7VA6A5A4VA3A2A1A0VPSIS

TMS320LC206

DIV2

HOLDA

IO2

IO3

PLLRS

CLKIN/X2

A15

76 77 78 79 80 81 82 83

84 85 86 87 88

89 90 91 92

93 94

95 96 97

98 99

EXT8

MP/MC

CLKOUT1

NMI

HOLD/INTI

INT2

INT3

D0D1D2

51525354555657585960616263646566676869707172737475

READY

R/W STRB

46 45

D15

D14

D13

D12

D11

D10

D7 V

26100

25242322212019181716151413121110987654321

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443

DEVICES

TMS320C206, TMS320LC206

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

device features

T able 1 shows the capacity of on-chip RAM and ROM, the number of serial and parallel I/O ports, the execution time of one machine cycle, and the type of package with total pin count of the TMS320C206 and TMS320LC206 devices.

Table 1. Characteristics of the TMS320C206 and TMS320LC206 Processors

ON-CHIP MEMORY (16-BIT WORDS)

’x206

TMS320C206 288

TMS320LC206 288

†

On-chip RAM space B1 (256 words) and B2 (32 words) can be used as data memory only.

‡

On-chip RAM space B0 (256 words) can be used either in data space or program space depending on the value of the CNF bit in the ST1 register. On-chip SARAM (4K) can be mapped in program space, data space, or both.

RAM ROM

† †

DATA/

PROG

4K + 256 4K + 256

DATA

PROG PROG SERIAL PARALLEL

‡

32K – 2 64K 5 (3.3 core) 25 100-pin TQFP

‡

32K – 2 64K 3.3 25 100-pin TQFP

FLASH

EEPROM

I/O PORTS

POWER

SUPPLY

(V) (ns) PIN COUNT

CYCLE

TIME

PACKAGE

TYPE WITH

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TMS320C206, TMS320LC206

TYPE

†

DESCRIPTION

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

TMS320C206, TMS320LC206 Terminal Functions

TERMINAL

NAME NO.

DATA AND ADDRESS BUSES

D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

A15 A14 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0

PS 53 O/Z

DS 51 O/Z

IS 52 O/Z

READY 49 I

R/W 47 O/Z

†

I = input, O = output, Z = high impedance, PWR = power, GND = ground

41 40 39 38 36 34 33 32 31 29 28 27 26 24 23 22

74 73 72 71 69 68 67 66 64 62 61 60 58 57 56 55

I/O/Z

O/Z

Parallel data bus D15 [most significant bit (MSB)] through D0 [least significant bit (LSB)]. D15–D0 are

used to transfer data between the ’C206 devices and external data/program memory or I/O devices.

Placed in the high-impedance state when not outputting (RD

go into the high-impedance state when OFF

Parallel address bus A15 (MSB) through A0 (LSB). A15–A0 are used to address external data/program

memory or I/O devices. These signals go into the high-impedance state when OFF

MEMORY CONTROL SIGNALS

Program-select. PS is always high unless low-level asserted for communicating to off-chip program

space. PS

Data-select. DS is always high unless low-level asserted for communicating to off-chip data space. DS

goes into the high-impedance state when OFF is active low.

I/O space select. IS is always high unless low-level asserted for communicating to I/O ports. IS goes into

the high-impedance state when OFF

Data-ready . READY indicates that an external device is prepared for the bus transaction to be completed.

If the external device is not ready (the external device pulls READY low), the ’C206 waits one cycle and

checks READY again. If READY is not used, it should be pulled high.

Read/write. R/W indicates data transfer direction when communicating with an external device. R/W is

normally in read mode (high), unless low level is asserted for performing a write operation. R/W

into the high-impedance state when OFF

goes into the high-impedance state when OFF is active low.

, WE high) or when RS asserted. They also

is active low.

goes

is active low.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443

TYPE

†

DESCRIPTION

TMS320C206, TMS320LC206 Terminal Functions (Continued)

TERMINAL

NAME NO.

MEMORY CONTROL SIGNALS (CONTINUED)

Read-select indicates an active, external read cycle. RD is active on all external program, data, and I/O reads. RD

goes into the high-impedance state when OFF is active low. To implement a glueless zero wait-state

RD 45 O/Z

WE 44 O/Z

STRB 46 O/Z

BR 43 O/Z

HOLDA 6 O/Z

XF 98 O/Z

BIO 99 I IO0

IO1 IO2 IO3

RS 100 I

PLLRS 10 I

EXT8 1 I

MP/MC 2 I

NMI 17 I

HOLD/INT1 18 I

INT2 INT3

†

I = input, O = output, Z = high impedance, PWR = power, GND = ground

96 97

19 20

I/O/Z

8 9

memory interface, the inverted R/W RD

pin can be programmed to provide an inverted R/W signal instead of RD. The FRDN bit (bit 15) in the PMST register controls this selection. FRDN=1 chooses R/W RD

as the “read” signal on pin 45. Write enable. The falling edge of WE indicates that the device is driving the external data bus (D15–D0). Data

can be latched by an external device on the rising edge of WE I/O writes. WE

Strobe. STRB is always high unless asserted low to indicate an external bus cycle. STRB goes into the high-impedance state when OFF

Bus-request. BR is asserted when a global data-memory access is initiated. BR goes into the high-impedance state when OFF

Hold-acknowledge. HOLDA indicates to the external circuitry that the processor is in a hold state and that the address, data, and memory control lines are in the high-impedance state so that they are available to the external circuitry for access of local memory . HOLDA low.

External flag output (latched software-programmable signal). XF is used for signalling other processors in multiprocessing configurations or as a general-purpose output pin. XF goes into the high-impedance state when OFF

Branch control input. When polled by the BCND pma,BIO instruction, ’C206 executes a branch to the specified program memory address if BIO

Software-controlled input/output by way of the asynchronous serial-port control register (ASPCR). At reset, IO0–IO3 are configured as inputs. These pins can be used as general-purpose input / output pins or as handshake control for the UART. IO0–IO3 go into the high-impedance state when OFF

INITIALIZATION, INTERRUPTS, AND RESET OPERATIONS

Reset. RS causes the ’C206 and ’LC206 to terminate execution and forces the program counter to zero. When RS various registers and status bits.

Phase locked loop reset. PLLRS resets the PLL to initiate PLL locking. At power up, both PLLRS and RS should be active (low) to reset the DSP core and the PLL circuitry. The PLL can only be reset along with the core as shown in Table 2. The state of the PLLRS tied high or low.

Bootloader mode pin. EXT8 is latched to bit 3 (LEVEXT8) in the PMST register. The bootloader located in ROM uses EXT8 to determine the type of boot method. If EXT8 is high, the enhanced ’C206 bootloader is used. If EXT8 is low, the ’C203 style bootloader is used. Refer to the number SPRU127) for more details regarding the ’C203 style bootloader.

Microprocessor/microcomputer mode select. If MP/MC is low, the on-chip ROM memory is mapped into program space. When MP/MC RESET, and its value is latched into bit 0 of the PMST register.

Nonmaskable interrupt. NMI is an external interrupt that cannot be masked by way of the interrupt-mode bit (INTM) or the interrupt-mask register (IMR). When NMI vector location. If NMI

HOLD and INT1 share the same pin. Both are treated as interrupt signals. If the MODE bit is 0 in the interrupt control register (ICR), hold logic can be implemented in combination with the IDLE instruction in software. At reset, the MODE bit in ICR is zero, enabling the HOLD mode for the pin.

External user interrupts. INT2 and INT3 are prioritized and maskable by the IMR and the INTM. INT2 and INT3

can be polled and reset by way of the interrupt flag register (IFR).

goes into the high-impedance state when OFF is active low.

is active low.

MULTI-PROCESSING SIGNALS

is active low.

is brought high, execution begins at location 0 of program memory after 16 cycles. RS affects

is high, the device accessess off-chip memory. This pin is only sampled at

is not used, it should be pulled high.

TMS320C206, TMS320LC206

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

signal can be used as the “read” signal in place of RD. The function of the

as the new “read” signal. FRDN=0 (at reset) chooses

. WE is active on all external program, data, and

goes into the high-impedance state when OFF is active

is low.

is active low.

is not applicable for 2 mode and should always be

TMS320C20x User’s Guide

is activated, the processor traps to the appropriate

(literature

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TMS320C206, TMS320LC206

TYPE

†

DESCRIPTION

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

TMS320C206, TMS320LC206 Terminal Functions (Continued)

TERMINAL

NAME NO.

OSCILLATOR, PLL, AND TIMER SIGNALS

TOUT 92 O

CLKOUT1 15 O/Z CLKIN/X2

X1 DIV1

DIV2

CLKX 87 I/O

CLKR 84 I

FSX 89 I/O

FSR 85 I

DX 90 O

DR 86 I TX 93 O Asynchronous serial port (ASP/UART) data transmit output pin

RX 95 I Asynchronous serial port (ASP/UART) data receive pin

TRST 79 I

TCK 78 I

TMS 81 I JT AG test-mode select. TMS is clocked into the TAP controller on the rising edge of TCK. TDI 80 I JTAG test-data input. TDI is clocked into the selected register (instruction or data) on a rising edge of TCK.

TDO 82 O/Z

EMU0 76 I/O/Z

†

I = input, O = output, Z = high impedance, PWR = power, GND = ground

12 13

3 5

Timer output. TOUT signals a pulse when the on-chip timer counts down past zero. The pulse is one CLKOUT1 cycle wide. TOUT goes into the high-impedance state when OFF

Master clock ouput. The CLKOUT1 high pulse signifies the logic phase while the low pulse signifies the latch phase.

Input clock. CLKIN/X2 is the input clock to the device. As CLKIN, the pin operates as the external oscillator

clock input and as X2, the pin operates as the internal oscillator input with X1 being the internal oscillator output. DIV1 and DIV2 are used to configure the on-chip PLL options, providing four clock modes (÷2, ×1, ×2, and ×4)

for a given input clock frequency. Refer to clock options in electrical characteristics section. Note that in the

divide-by-2 mode, the PLL is bypassed. DIV1–DIV2 should not be changed unless the RS

SERIAL PORT SIGNALS (SSP AND ASP)

Transmit clock. CLKX is a clock signal for clocking data from the XSR (transmit shift register) to the DX data-transmit pin. CLKX can be an input if the MCM bit in the synchronous serial-port control register (SSPCR) is set to 0. CLKX can also be driven by the device at one-half of the CLKOUT1 frequency when MCM = 1. If the serial port is not being used, CLKX goes into the high-impedance state when OFF is active low. Value at reset is as an input.

Receive clock. External clock signal for clocking data from the DR (data-receive) pin into the serial-port receive shift register (RSR). CLKR must be present during serial-port transfers. If the serial port is not being used, CLKR can be sampled as an input by IN0 bit of the SSPCR.

Frame synchronization pulse for transmit. The falling edge of the FSX pulse initiates the data-transmit process, beginning the clocking of the SR. Following reset, FSX is an input. FSX can be selected by software to be an output when the TXM bit in the serial control register, SSPCR, is set to 1. FSX goes into the high-impedance state when OFF

Frame synchronization pulse for receive input. The falling edge of the FSR pulse initiates the data-receive process, beginning the clocking of the RSR. FSR goes into the high-impedance state when OFF

Synchronous serial port (SSP) data transmit output. Serial data is transmitted from the transmit shift register (XSR) through the DX pin. DX is in the high-impedance state when OFF

Synchronous serial port (SSP) data receive input. Serial data is received in the receive shift register (RSR) through the DR pin.

IEEE Standard 1149.1 (JTAG) test reset. TRST, when active high, gives the scan system control of the operations of the device. If TRST are ignored. If the TRST

JTAG test clock. TCK is normally a free-running clock signal with a 50% duty cycle. The changes on the test-access port (TAP) input signals (TMS and TDI) are clocked into the TAP controller, instruction register, or selected test-data register on the rising edge of TCK. Changes at the TAP output signal (TDO) occur on the falling edge of TCK.

JTAG test-data output. The contents of the selected register (instruction or data) are shifted out of TDO on the falling edge of TCK. TDO is in the high-impedance state except when the scanning of data is in progress.

Emulator pin 0. When TRST is driven low, EMU0 must be high for activation of the OFF condition. When TRST is driven high, EMU0 is used as an interrupt to or from the emulator system and is defined as an input/output through the JTAG scan.

is active low.

TEST SIGNALS

is driven low, the device operates in its functional mode, and the test signals

pin is not driven, an external pulldown resistor must be used.

is active low.

signal is active.

is active low.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443

TYPE

†

DESCRIPTION

PLLRS

CORE STATUS

PLL STATUS

TMS320C206, TMS320LC206 Terminal Functions (Continued)

TERMINAL

NAME NO.

TEST SIGNALS (CONTINUED)

Emulator pin 1. Emulator pin 1 disables all outputs. When TRST is driven high, EMU1 /OFF is used as an interrupt to or from the emulator system and is defined as an input/output through the JTAG scan. When TRST is driven low, this pin is configured as OFF. EMU1/ OFF, when active low, puts all output drivers in the

EMU1/OFF 77 I/O/Z

DD5

†

I = input, O = output, Z = high impedance, PWR = power, GND = ground

‡

For the ’C206, the 3.3-V and 5-V power supplies may be sequenced in any order.

PWR 5-V I/O power supply (Applicable for TMS320C206 only‡)

50 63 91

7 16 35

PWR 3.3-V I/O power supply (Applicable for ’LC206 only)

50 63 91

4 11

PWR 3.3-V core power supply (Applicable for both ’C206 and ’LC206 devices‡)

75 14

21 25 30 37 42 48

GND Ground

54 59 65 70 83 88 94

high-impedance state. Note that OFF multiprocessing applications). Therefore, for the OFF TRST

= 0 EMU0 = 1 EMU1/OFF

= 0

SUPPLY PINS

is used exclusively for testing and emulation purposes (not for

TMS320C206, TMS320LC206

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

condition, the following apply:

Table 2. Resetting the DSP Core and PLL Circuitry

0 0 Reset Reset 0 1 Reset Normal Operation 1 0 Normal Operation Normal Operation 1 1 Normal Operation Normal Operation

The PLL can only be reset along with the DSP core and peripherals.

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TMS320C206, TMS320LC206 DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

functional block diagram of the ’C206 internal hardware

DIV1 DIV2

IS DS PS

TOUT

I/O[0–3]

CLKX

FSX FSR

CLKR

A15–A0

D15–D0

Timer

TCR

PRD

TIM

ASP

ASPCR

ADTR

IOSR

BRD

SSP

SSPCR

SDTR

SSPST

SSPMC

SSPCT

Reserved

I/O-Mapped Registers

STRB

READY

HOLD

HOLDA

MP/MC

INT[1–3]

R/W

Data Bus

Memory Map

IMR (16) IFR (16)

GREG (16)

Control

MUXMUX

ARP(3)

ARB(3)

MUX

Data/Prog

SARAM

(4K x 16)

MUX

X1 CLKOUT1 CLKIN/X2

RD WE NMI

MUX

Data/Prog

DARAM

B0 (256 x 16)

MUX

ROM

(32K  16)

AR0(16) AR1(16) AR2(16) AR3(16) AR4(16) AR5(16) AR6(16) AR7(16)

ARAU(16)

MUX

NPAR

PAR MSTACK

DP(9)

MUX

Data

DARAM

B2 (32 x16)

B1 (256 x16)

Program Bus

MUX

STACK 8 x 16

7 LSB from IR

ISCALE (0–16)

MUX

PCTRL

Data Bus

TREG0(16)

Multiplier

PREG(32)

PSCALE (–6,0, 1, 4)

MUX

CALU(32)

ACCL(16)ACCH(16)C

OSCALE (0–7)

Data Bus

Program Bus

1616

MUX

3232

Program Bus

NOTES: A. Symbol descriptions appear in Table 3 and Table 4.

B. For clarity, the data and program buses are shown as single buses although they include address and data bits.

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IFR

TMS320C206, TMS320LC206

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

Table 3. Legend for the ’C206 Internal Hardware Functional Block Diagram

SYMBOL NAME DESCRIPTION

ACC Accumulator

Asynchronous

ADTR

ARAU

ARB

ARP

ASP

ASPCR

AUX REGS (AR0–AR7)

BRD Baud-Rate Divisor Used to set the baud rate of the UART

C Carry

CALU

DARAM Dual Access RAM

GREG

IMR INT# Interrupt Traps A total of 32 interrupts by way of hardware and/or software are available. IOSR

Data Transmit and Receive Register

Auxiliary Register Arithmetic Unit

Auxiliary Register Pointer Buffer

Auxiliary Register Pointer

Universal Asynchronous Receive/Transmit

Asynchronous Serial-Port Control Register

Auxiliary Registers 0–7

Bus Request Signal

Central Arithmetic Logic Unit

Data Memory Page Pointer

Global Memory Allocation Register

Interrupt Flag The 7-bit IFR indicates that the ’C206 has latched an interrupt pulse from one of the seven maskable Register interrupt sources.

Interrupt Mask Register

I/O Status Register

Instruction Register

32-bit register that stores the results and provides input for subsequent CALU operations. Also includes shift and rotate capabilities. ACCH is the accumulator high word; ACCL is the accumulator low word.

16-bit read/write register used to transmit data from/receive data into the asynchronous serial port. Note that the ASP works with 8-bit data.

An unsigned, 16-bit arithmetic unit used to calculate indirect addresses using the auxiliary registers as inputs and outputs.

See Table 4 for status register field definitions.

ASP is the asynchronous serial port (UART).

ASPCR controls the asynchronous serial-port operation This register contains bits for setting port modes, enabling/disabling automatic baud-rate detection, selecting the number of stop bits, and configuring I/O pins, etc.

These 16-bit registers are used as pointers to anywhere within the data space address range. They are operated upon by the ARAU and are selected by the auxiliary register pointer (ARP). AR0 can also be used as an index value for AR updates of more than one and as a compare value to AR.

BR is asserted during access of the external global data memory space. READY is asserted to the device when the global data memory is available for the bus transaction. BR address space by up to 32K words.

Register carry output from CALU. C is fed back into the CALU for extended arithmetic operation. The C bit resides in status register 1 (ST1), and can be tested in conditional instructions. C is also used in accumulator shifts and rotates.

32-bit-wide main arithmetic logic unit for the TMS320C20x core. The CALU executes 32-bit operations in a single machine cycle. CALU operates on data coming from ISCALE or PSCALE with data from ACC, and provides status results to PCTRL.

If the on-chip RAM configuration control bit (CNF) is set to 0, the reconfigurable dual-access RAM (DARAM) block B0 is mapped to data space; otherwise, B0 is mapped to program space. Blocks B1 and B2 are mapped to data memory space only , at addresses 0300–03FF and 0060–007F, respectively . Blocks 0 and 1 contain 256 words, while Block 2 contains 32 words.

See Table 4 for status register field definitions.

GREG specifies the size of the global data memory space.

IMR individually masks or enables the seven interrupts.

IOSR detects current levels (and changes with inputs) on pins IO0–IO3 and the status of UART.

IR is the instruction register.

can be used to extend the data memory

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443

TMS320C206, TMS320LC206 DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

Table 3. Legend for the ’C206 Internal Hardware Functional Block Diagram (Continued)

SYMBOL NAME DESCRIPTION

ISCALE

MPY Multiplier

MSTACK Micro Stack MUX Multiplexer Multiplexes buses to a common input NPAR

OSCALE

PAR

PC Program Counter

PCTRL

PRD PREG Product Register 32-bit register holds results of 16 × 16 multiply.

PSCALE

SDTR

SSP

SSPCR

SSPCT

SSPMC

SSPST

STACK Stack

TCR

Input Data-Scaling Shifter

Next Program Address Register

Output Data-Scaling Shifter

Program Address Register

Program Controller

Timer-Period Register

Product-Scaling Shifter

Synchronous Data Transmit and Receive Register

Synchronous Serial-Port

Synchronous Serial-Port Control Register

Synchronous Serial-Port Counter Register

Synchronous Serial-Port Multichannel Register

Synchronous Serial-Port Status Register

Timer-Control Register

16-bit to 32-bit barrel left-shifter. ISCALE (ISFL) shifts incoming 16-bit data 0 to16 positions left, relative to the 32-bit output within the fetch cycle; therefore, no cycle overhead is required for input scaling operations.

16 × 16-bit multiplier to a 32-bit product. MPY executes multiplication in a single cycle. MPY operates either signed or unsigned 2s-complement arithmetic multiply.

MSTACK provides temporary storage for the address of the next instruction to be fetched when program-address-generation logic is used to generate sequential addresses in data space.

NPAR holds the program address to be driven out on the PAB on the next cycle. 32-bit to 16-bit barrel left-shifter. OSCALE (OSFL) shifts the 32-bit accumulator output 0 to 7 bits left for

quantization management and outputs either the 16-bit high- or low-half of the shifted 32-bit data to the Data-Write Data Bus (DWEB).

PAR holds the address currently being driven on P AB for as many cycles as it takes to complete all memory operations scheduled for the current bus cycle.

PC increments the value from NPAR to provide sequential addresses for instruction-fetching and sequential data-transfer operations.

PCTRL decodes instruction, manages the pipeline, stores status, and decodes conditional operations. PRD contains the 16-bit period that is loaded into the timer counter when the counter borrows or when the

reload bit is activated. Reset initializes the PRD to FFFFh.

0-, 1- or 4-bit left shift or 6-bit right shift of multiplier product. The left-shift options are used to manage the additional sign bits resulting from the 2s-complement multiply. The right-shift option is used to scale down the number to manage overflow of product accumulation in the CALU. PSCALE (PSFL) resides in the path from the 32-bit product shifter and from either the CALU or the DWEB, and requires no cycle overhead.

16-bit read/write register used to transmit data from/receive data into the synchronous serial port. This register functions as the path to the transmit and receive FIFOs of the SSP.

SSP is the synchronous serial-port.

SSPCR is the control register for selecting the serial port’s mode of operation.

SSPCT is the synchronous serial-port counter register.

SSPMC is the synchronous serial-port multichannel register.

SSPST is the synchronous serial-port status register.

STACK is a block of memory used for storing return addresses for subroutines and interrupt-service routines, or for storing data. The ’C20x stack is 16-bit wide and eight-level deep.

TCR contains the control bits that define the divide-down ratio, start/stop the timer, and reload the period. Also contained in TCR is the current count in the prescaler. Reset initializes the timer divide-down ratio to 0 and starts the timer.

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Table 3. Legend for the ’C206 Internal Hardware Functional Block Diagram (Continued)

SYMBOL NAME DESCRIPTION

TIM

TREG

architectural overview

The ’C206 advanced Harvard-type architecture maximizes the processing power by maintaining two separate memory bus structures—program and data—for full-speed execution. The multiple buses allow data and instructions to be read simultaneously. Instructions support data transfers between the two spaces. This architecture permits coefficients stored in program memory to be read in RAM, eliminating the need for a separate coefficient RAM. This, coupled with a four-instruction deep pipeline, allows the TMS320C206/TMS320LC206 to execute most instructions in a single cycle.

status and control registers

Two status registers, ST0 and ST1, contain the status of various conditions and modes. These registers can be stored into data memory and loaded from data memory , thus allowing the status of the machine to be saved and restored for subroutines.

Timer-Counter Register

Temporary Register

TIM contains the current 16-bit count of the timer. Reset initializes the TIM to FFFFh. 16-bit register holds one of the operands for the multiply operations. TREG holds the dynamic shift count

for the LACT , ADDT, and SUBT instructions. TREG holds the dynamic bit position for the BITT instruction.

The load-status register (LST) instruction is used to write to ST0 and ST1 (except the INTM bit which is not affected by the LST instruction). The store-status register (SST) instruction is used to read from the ST0 and ST1. The individual bits of these registers can be set or cleared by the SETC and CLRC instructions. Figure 1 shows the organization of status registers ST0 and ST1, indicating all status bits contained in each. Several bits in the status registers are reserved and are read as logic 1s. See Table 4 for status-register field definitions.

15–13 12 11 10 9 87654321 0

ST0

ST1

ARP OV OVM 1 INTM DP

15–13 12 11 10 918171615XF41312PM1–0

ARB CNF TC SXM C

Figure 1. Status and Control Register Organization

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status and control registers (continued)

Table 4. Status Register Field Definitions

FIELD FUNCTION

ARB

ARP

CNF

INTM

OVM

SXM

Auxiliary register pointer buffer . Whenever the ARP is loaded, the old ARP value is copied to the ARB except during an LST instruction. When the ARB is loaded by an LST #1 instruction, the same value is also copied to the ARP.

Auxiliary register pointer. ARP selects the auxiliary register (AR) to be used in indirect addressing. When the ARP is loaded, the old ARP value is copied to the ARB register. ARP can be modified by memory-reference instructions when using indirect addressing, and by the LARP, MAR, and LST instructions. The ARP is also loaded with the same value as ARB when an LST #1 instruction is executed.

Carry bit. C is set to 1 if the result of an addition generates a carry, or reset to 0 if the result of a subtraction generates a borrow . Otherwise, C is reset after an addition or set after a subtraction, except if the instruction is ADD or SUB with a 16-bit shift. In these cases, the ADD can only set and the SUB only reset the carry bit, but cannot affect it otherwise. The single-bit shift and rotate instructions also affect C, as well as the SETC, CLRC, and LST #1 instructions. Branch instructions have been provided to branch on the status of C. C is set to 1 on a reset.

On-chip RAM configuration-control bit. If CNF is set to 0, the reconfigurable data DARAM blocks are mapped to data space; otherwise, they are mapped to program space. The CNF can be modified by the SETC CNF, CLRC CNF, and LST #1 instructions. RS

Data memory page pointer . The 9-bit DP register is concatenated with the seven LSBs of an instruction word to form a direct memory address of 16 bits. DP can be modified by the LST and LDP instructions.

Interrupt-mode bit. When INTM is set to 0, all unmasked interrupts are enabled. When set to 1, all maskable interrupts are disabled. INTM is set and reset by the SETC INTM and CLRC INTM instructions. INTM has no effect on the nonmaskable RS and NMI interrupts. Note that INTM is unaffected by the LST instruction. This bit is set to 1 when a maskable interrupt is acknowledged or when RS

Overflow-flag bit. As a latched overflow signal, OV is set to 1 when overflow occurs in the ALU. Once an overflow occurs, the OV remains set until a reset, BCND/D on OV/NOV, or LST instruction clears OV.

Overflow-mode bit. When OVM is set to 0, overflowed results overflow normally in the accumulator. When set to 1, the accumulator is set to either its most positive or negative value upon encountering an overflow. The SETC and CLRC instructions set and reset this bit, respectively. LST also can be used to modify the OVM.

Product-shift mode. If these two bits are 00, the multiplier’s 32-bit product is loaded into the ALU with no shift. If PM = 01, the PREG output is left-shifted one place and loaded into the ALU, with the LSB zero-filled. If PM = 10, the PREG output is left-shifted by four bits and loaded into the ALU, with the LSBs zero-filled. PM = 1 1 produces a right shift of six bits, sign- extended. Note that the PREG contents remain unchanged. The shift takes place when transferring the contents of the PREG to the ALU. PM is loaded by the SPM and LST #1 instructions. PM is cleared by RS

Sign-extension mode bit. SXM = 1 produces sign extension on data as it is passed into the accumulator through the scaling shifter. SXM = 0 suppresses sign extension. SXM does not af fect the definitions of certain instructions; for example, the ADDS instruction suppresses sign extension regardless of SXM. SXM is set by the SETC SXM and reset by the CLRC SXM instructions, and can be loaded by the LST #1. SXM is set to 1 by reset.

T est/control flag bit. TC is affected by the BIT , BITT, CMPR, LST #1, and NORM instructions. TC is set to a 1 if a bit tested by BIT or BITT is a 1, if a compare condition tested by CMPR exists between AR (ARP) and AR0, if the exclusive-OR function of the two MSBs of the accumulator is true when tested by a NORM instruction. The conditional branch, call, and return instructions can execute, based on the condition of TC.

XF pin status bit. XF indicates the state of the XF pin, a general-purpose output pin. XF is set by the SETC XF and reset by the CLRC XF instructions. XF is set to 1 by reset.

sets the CNF to 0.

is asserted.

central processing unit

The TMS320C206/TMS320LC206 central processing unit (CPU) contains a 16-bit scaling shifter, a 16 x16-bit parallel multiplier, a 32-bit central arithmetic logic unit (CALU), a 32-bit accumulator, and additional shifters at the outputs of both the accumulator and the multiplier. This section describes the CPU components and their functions. The functional block diagram shows the components of the CPU.

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input scaling shifter

The TMS320C206/TMS320LC206 provides a scaling shifter with a 16-bit input connected to the data bus and a 32-bit output connected to the CALU. This shifter operates as part of the path of data coming from program or data space to the CALU, and requires no cycle overhead. It is used to align the 16-bit data coming from memory to the 32-bit CALU. This is necessary for scaling arithmetic as well as aligning masks for logical operations.

The scaling shifter produces a left shift of 0 to 16 on the input data. The LSBs of the output are filled with zeros; the MSBs may either be filled with zeros or sign-extended, depending upon the value of the SXM bit (sign-extension mode) of status register ST1. The shift count is specified by a constant embedded in the instruction word or by a value in TREG. The shift count in the instruction allows for specific scaling or alignment operations specific to that point in the code. The TREG base shift allows the scaling factor to adapt to the performance of the system.

multiplier

The TMS320C206/TMS320LC206 uses a 16 x16-bit hardware multiplier that is capable of computing a signed or an unsigned 32-bit product in a single machine cycle. All multiply instructions, except the MPYU (multiply unsigned) instruction, perform a signed-multiply operation. That is, two numbers being multiplied are treated as 2s-complement numbers, and the result is a 32-bit 2s-complement number. There are two registers associated with the multiplier:

a 16-bit temporary register (TREG) that holds one of the operands for the multiplier, and

a 32-bit product register (PREG) that holds the product.

Four product shift modes (PM) are available at the PREG output (PSCALE). These shift modes are useful for performing multiply/accumulate operations, performing fractional arithmetic, or justifying fractional products. The PM field of status register ST1 specifies the PM shift mode, as shown in Table 5.

Table 5. PSCALE Product Shift Modes

PM SHIFT DESCRIPTION

00 no shift Product fed to CALU or data bus with no shift 01 left 1 Removes the extra sign bit generated in a 2s-complement multiply to produce a Q31 product 10 left 4 Removes the extra four sign bits generated in a 16 x13 2s-complement multiply to a produce a Q31

11 right 6 Scales the product to allow up to 128 product accumulation without the possibility of accumulator overflow

product when using the multiply by a 13-bit constant

The product can be shifted one bit to compensate for the extra sign bit gained in multiplying two 16-bit 2s-complement numbers (MPY). A four-bit shift is used in conjunction with the MPY instruction with a short immediate value (13 bits or less) to eliminate the four extra sign bits gained in multiplying a 16-bit number by a 13-bit number. Finally, the output of PREG can be right-shifted six bits to enable the execution of up to 128 consecutive multiply/accumulates without the possibility of overflow.

The L T (load TREG) instruction normally loads TREG to provide one operand (from the data bus), and the MPY (multiply) instruction provides the second operand (also from the data bus). A multiplication can also be performed with a 13-bit immediate operand when using the MPY instruction. A product is then obtained every two cycles. For efficient implementation of multiple products, or multiple sums of products, the CPU provides pipelining of the TREG load operation with certain CALU operations which use the PREG. These operations include: load ACC with PREG (L TP); add PREG to ACC (LTA); add PREG to ACC and shift TREG input data to next address in data memory (LTD); and subtract PREG from ACC (LTS).

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multiplier (continued)

Two multiply/accumulate instructions (MAC and MACD) fully utilize the computational bandwidth of the multiplier, allowing both operands to be processed simultaneously. The data for these operations can be transferred to the multiplier each cycle by way of the program and data buses. This facilitates single-cycle multiply/accumulates when used with the repeat (RPT) instruction. In these instructions, the coefficient addresses are generated by program-address generation (PAGEN), while the data addresses are generated by data-address generation (DAGEN). This allows the repeated instruction to access the values sequentially from the coefficient table and step through the data in any of the indirect addressing modes.

The MACD instruction, when repeated, supports filter constructs (weighted running averages) so that as the sum-of-products is executed, the sample data is shifted in memory to make room for the next sample and to discard the oldest sample.

The MPYU instruction performs an unsigned multiplication, which greatly facilitates extended-precision arithmetic operations. The unsigned contents of TREG are multiplied by the unsigned contents of the addressed data-memory location, with the result placed in PREG. This allows the operands of greater than 16 bits to be broken down into 16-bit words and processed separately to generate products of greater than 32 bits. The SQRA (square/add) and SQRS (square/subtract) instructions pass the same value to both inputs of the multiplier for squaring a data-memory value.

After the multiplication of two 16-bit numbers, the 32-bit product is loaded into the 32-bit product register (PREG). The product from PREG can be transferred to the CALU or to data memory through the SPH (store product high) and SPL (store product low) instructions. Note: the transfer of PREG to either the CALU or data memory passes through the PSCALE shifter and is therefore, affected by the product-shift mode value defined by the PM bits in the ST1 register. This is important when saving PREG in an interrupt-service routine context save as the PSCALE shift effects cannot be modeled in the restore operation. PREG can be cleared by executing the MPY #0 instruction. The product register can be restored by loading the saved low half into TREG and executing a MPY #1 instruction. The high half is then loaded using the LPH instruction.

central arithmetic logic unit

The TMS320C206/TMS320LC206 CALU implements a wide range of arithmetic and logical functions, the majority of which execute in a single clock cycle. This arithmetic/logic unit (ALU) is referred to as central to differentiate it from a second ALU used for indirect address generation called the auxiliary register arithmetic unit (ARAU). Once an operation is performed in the CALU, the result is transferred to the accumulator (ACC) where additional operations, such as shifting, may occur. Data that is input to the CALU can be scaled by ISCALE when coming from one of the data buses (DRDB or PRDB) or scaled by PSCALE when coming from the multiplier.

The CALU is a general-purpose ALU unit that operates on 16-bit words taken from data memory or derived from immediate instructions. In addition to arithmetic operations, the CALU can perform Boolean operations, facilitating the bit-manipulation ability required for a high-speed controller. One input to the CALU is always provided from the accumulator, and the other input can be provided from the product register (PREG) of the multiplier or from the output of the scaling shifter (that has been read from data memory or from the ACC). After the CALU has performed the arithmetic or logical operation, the result is stored in the accumulator.

The TMS320C206/TMS320LC206 supports floating-point operations for applications requiring a large dynamic range. The NORM (normalization) instruction is used to normalize fixed-point numbers contained in the accumulator by performing left shifts. The four bits of the TREG define a variable shift through the scaling shifter for the LACT/ADDT/SUBT (load/add to/subtract from accumulator with shift specified by TREG) instructions. These instructions are useful in floating-point arithmetic where denormalization of a number is required (that is, floating-point to fixed-point conversion). They are also useful in the implementation of automatic-gain control (AGC) at the input of a filter. The BITT (bit test) instruction provides testing of a single bit of a word in data memory based on the value contained in the four LSBs of TREG.

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central arithmetic logic unit (continued)

The CALU overflow-saturation mode can be enabled/disabled by setting/resetting the OVM bit of ST0. Setting the OVM status-register bit selects the overflow-saturation mode. When the CALU is in the overflow-saturation mode and an overflow occurs, the overflow flag is set and the accumulator is loaded with either the most positive or the most negative value representable in the accumulator, depending upon the direction of the overflow . The value of the accumulator upon saturation is 07FFFFFFFh (positive) or 080000000h (negative). If the OVM (overflow mode) status register bit is reset and an overflow occurs, the overflowed results are loaded into the accumulator without modification. (Logical operations cannot result in overflow.)

The CALU can execute a variety of branch instructions that depend on the status of the CALU and accumulator . These instructions can be executed conditionally , based on various combinations of the associated status bits. For overflow management, these conditions include the OV (branch on overflow) and EQ (branch on accumulator equal to zero). In addition, the BACC (branch to address in accumulator) instruction provides the ability to branch to an address specified by the accumulator (computed goto). Bit-test instructions (BIT and BITT), which do not affect the accumulator, allow the testing of a specified bit of a word in data memory.

The CALU also has a carry bit (bit 9 of status register ST1) that facilitates efficient computation of extended-precision products and additions or subtractions. The carry bit is also useful in overflow management. The carry bit is affected by the following operations:

Additions to and subtractions from the accumulator: C = 0: When the result of a subtraction generates a borrow.

When the result of an addition does not generate a carry . (Exception: When the ADD instruction is used with a shift of 16 and no carry is generated, the ADD instruction has no effect on C.)

C = 1: When the result of an addition generates a carry.

When the result of a subtraction does not generate a borrow. (Exception: When the SUB instruction is used with a shift of 16 and no borrow is generated, the SUB instruction has no effect on C.)

Single-bit shifts and rotations of the accumulator value. During a left shift or rotation, the most significant

bit of the accumulator is passed to C; during a right shift or rotation, the least significant bit is passed to C. Note: the carry bit is set to “1” on a hardware reset. The ADDC (add to accumulator with carry) and SUBB (subtract from accumulator with borrow) instructions use

the previous value of carry in their addition/subtraction operation.

accumulator

The 32-bit accumulator is the registered output of the CALU. It can be split into two 16-bit segments for storage in data memory. Shifters at the output of the accumulator provide a left shift of 0 to 7 places. This shift is performed while the data is being transferred to the data bus for storage. The contents of the accumulator remain unchanged. When the post-scaling shifter is used on the high word of the accumulator (bits 16–31), the MSBs are lost and the LSBs are filled with bits shifted in from the low word (bits 0–15). When the postscaling shifter is used on the low word, the LSBs are zero-filled.

The SFL and SFR (in-place one-bit shift to the left / right) instructions and the ROL and ROR (rotate to the left/right) instructions implement shifting or rotating of the accumulator contents through the carry bit. The SXM bit affects the definition of the SFR (shift accumulator right) instruction. When SXM = 1, SFR performs an arithmetic right shift, maintaining the sign of the accumulator data. When SXM = 0, SFR performs a logical shift, shifting out the LSBs and shifting in a zero for the MSB. The SFL (shift accumulator left) instruction is not affected by the SXM bit and behaves the same way in both cases, shifting out the MSB and shifting in a zero. Repeat (RPT) instructions can be used with the shift and rotate instructions for multiple-bit shifts.

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auxiliary registers and auxiliary-register arithmetic unit (ARAU)

The ’C206 provides a register file containing eight auxiliary registers (AR0–AR7). The auxiliary registers are used for indirect addressing of the data memory or for temporary data storage. For indirect data-memory addressing, the address of the desired memory location is placed into the selected auxiliary register. These registers are referenced with a 3-bit auxiliary register pointer (ARP) that is loaded with a value from 0 through 7, designating AR0 through AR7, respectively . The auxiliary registers and the ARP can be loaded from data memory , the ACC, the product register, or by an immediate operand defined in the instruction. The contents of these registers can also be stored in data memory or used as inputs to the CALU.

The auxiliary register file (AR0–AR7) is connected to the auxiliary register arithmetic unit (ARAU). The ARAU can autoindex the current auxiliary register while the data-memory location is being addressed. Indexing either by ±1 or by the contents of the AR0 register can be performed. As a result, accessing tables of information does not require the CALU for address manipulation; thus, the CALU is free for other operations in parallel.

memory

The ’C206 implements three separate address spaces for program memory , data memory, and I/O. Each space accommodates a total of 64K 16-bit words. Within the 64K words of data space, the 256 to 32K words at the top of the address range can be defined to be external global-memory in increments of powers of two, as specified by the contents of the global-memory allocation register (GREG). Access to global memory is arbitrated using the global-memory bus request (BR

) signal.

On the ’C206, the first 96 (0 – 5Fh) data-memory locations are allocated for memory-mapped registers or reserved. This memory-mapped register space contains various control and status registers including those for the CPU.

The on-chip memory of the ’C206 includes 544 x 16 words of dual-access RAM (DARAM), 4K x 16 single-access RAM (SARAM), and 32K x 16 program ROM memory . T able 6 shows the mapping of these memory blocks and the appropriate control bits and pins. Figure 2 shows the effects of the memory control pin MP/MC control bit CNF on the mapping of the respective memory spaces to on-chip or off-chip. The PON and DON bits select the SARAM (4K) mapping in program, data, or both. See Table 9 for details on the PMST register, the PON bit, and the DON bit. At reset, these bits are 1 1, and the on-chip SARAM is mapped in both the program and data space. The SARAM addresses (800h in data and 8000h in program memory) are accessible in external memory space, if the on-chip SARAM is not enabled.

At reset, if the MP/MC external program space. The MP/MC high, the device is in microprocessor mode. PMST register bits can be read and modified in software. If bit 0 is cleared to 0, the device enters microcomputer mode and program memory addresses from 0000h to 7FFFh map to on-chip ROM.

If the MP/MC the on-chip ROM mapped in program space. The on-chip ROM could either contain the bootloader or customer-specific application code which is then executed.

The on-chip data memory blocks B0 and B1 are 256  16 words each. When CNF = 0, B0 is mapped in data space at addresses 0200–02FFh. When CNF = 1, B0 is mapped in program space at addresses 0FF00–0FFFFh. The B1 block is always mapped in data space at addresses 0300–03FFh, and B2 block is always mapped in a data space at addresses 60–7Fh.

pin is held low during reset, the device starts in microcomputer mode and branches to 0000h in

pin is held high, the device starts in microprocessor mode and branches to 0000h in

pin status is latched in the PMST register (bit 0). As long as this bit remains

and the

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memory (continued)

Hex PROGRAM Hex PROGRAM Hex DATA Hex I/O SPACE

0000 Interrupt Vectors

- - - - - - - - - - - - - - - - - - - - - - - - - - Registers and

External - - - - - - - - - - - - - 01FF

7FFF 7FFF ROM Test Code 02FF

8000 On-Chip 8000 On-Chip 0300 On-Chip

SARAM 4K SARAM 4K 03FF DARAM B1

Internal

(PON = 1)

8FFF

9000 9000 0800

External

(PON = 0)

External External 1800

0000 Interrupt Vectors 0000 Memory-Mapped 0000

Bootloader Code

- - - - - - - - - - - - A-law table 0060 On-Chip

- - - - - - - - - - - - - 007F DARAM B2 µ- law table 0080 Reserved

7EFF Unused On-Chip DARAM

- - - - - - - - - - - - - Reserved

7F00 Reserved For (CNF = 1)

Internal

(PON = 1)

8FFF

External

(PON = 0)

005F

0200

0400

07FF

17FF (DON = 0)

Reserved

Addresses

B0 (CNF = 0)

Reserved

On-Chip

SARAM 4K

Internal

(DON = 1)

External

I/O Space

FDFF FDFF External

FE00 Reserved FE00 Reserved

(CNF = 1) (CNF = 1) FEFF

External External FF00 Reserved

FEFF (CNF = 0) FEFF (CNF = 0) for

FF00 On-Chip DARAM FF00 On-Chip DARAM FF0F Test

B0 (CNF = 1) B0 (CNF = 1) FF10 On-Chip I/O

External External Peripheral

FFFF (CNF = 0) FFFF (CNF = 0) FFFF FFFF Registers

Microprocessor Mode

(MP/MC

= 1)

†

Standard ROM devices will come with boot code and the A-law, µ-law table.

Microcomputer Mode

(MP/MC = 0)

On-chip ROM

Figure 2. TMS320C206/TMS320LC206 Memory Map Configurations

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†

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memory (continued)

T able 6. TMS320C206/TMS320LC206 Memory Map

DESCRIPTION OF MEMORY BLOCK

256 x 16 word dual-access RAM (DARAM) (B0) 200h – 2FFh – x x x 0 256 x 16 word DARAM (B0) – FF00h – FFFFh x x x 1 256 x 16 word DARAM (B1) 300h – 3FFh – x x x x 32 x 16 word DARAM (B2) 60h – 7Fh – x x x x 32K x 16 word on-chip program memory (ROM) – 0000h – 7FFFh 0 x x x 32K x 16 word external program memory – 0000h – 7FFFh 1 x x x 32K x 16 word external program memory,

if CNF=0 and MP/MC External program memory, if CNF=1 – 8000h – FDFFh 0 x 0 1 4K x 16 word on-chip SARAM (data) 800h – 17FFh x 1 0 x 4K x 16 word on-chip SARAM (program) – 8000h – 8FFFh x 0 1 x 4K x 16 word program and data on-chip SARAM 4K x 16 word on-chip SARAM not available not available x 0 0 x

†

The “x” denotes a “don’t care” condition.

‡

The single 4K on-chip SARAM block is accessible from both data and program memory space.

DATA MEMORY

ADDRESS

– 8000h – FFFFh 0 x 0 0

‡

800h – 17FFh 8000h – 8FFFh x 1 1 x

PROG MEMORY

ADDRESS

MP/MC†DON

†

PON

†

on-chip ROM

The mask-programmable ROM is located in program memory space. Customers can arrange to have this ROM programmed with contents unique to any particular application. The ROM is enabled or disabled by the state of the MP/MC the block of program memory from addresses 0000–7FFFh. (Note: the last 100h words, 7F00–7FFFh, are reserved for test.) When in microprocessor mode (MP/MC device’s external program memory space.

control input upon resetting the device. In microcomputer mode (MP/MC = 0), the ROM occupies

= 1), addresses 0000h–7FFFh are located in the

CNF BIT

†

bootloader

A bootloader is available in the standard ’C206/’LC206 on-chip ROM. This bootloader can be used to automatically transfer user code from an external source to program memory at power up. If MP/MC device is sampled low during a hardware reset, execution begins at location 0000h of the on-chip ROM. This location contains a branch instruction to the start of the bootloader program. User code can be transferred to the DSP program memory using any one of the following options:

8-bit transfer through the Synchronous Serial Port (SSP)

8-bit transfer through the Asynchronous Serial Port (ASP)

8/16-bit external EPROM

8/16-bit parallel port mapped to I/O space address 0001h of the DSP

Warm boot option

The standard ’C206/’LC206 on-chip ROM also contains the A-law, µ-law table in addition to the bootloader . (The A-law table starts at 0400h, and the µ-law table starts at 0500h.)

of the

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MP/MC

EXT8

OPTION

MODES

BRS WORD AT I/O 0000h

BOOTLOADER OPTION

MODE

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SPRS065B – JUNE 1998 – REVISED JANUARY 1999

bootloader (continued)

The required option is chosen by the state of the EXT8 pin during power up and with the help of a boot routine selection (BRS) word, which is read from I/O address 0000h. The lower 8 bits of the word specify which bootloader option is to be executed. The BRS word uses a 6-bit source address field (SRCE_AD) in parallel EPROM mode and a 6-bit entry address field (ADDR_bb) in warm boot mode to arrive at the starting address of the code. The state of the MP/MC bootloader options that can be chosen by the EXT8 pin. Table 8 describes the options available in the ’C206 enhanced bootloader and the bit values of the BRS word to select modes.

0 0 Use ’C203 style bootloader 1 0 1 Use ’C206 enhanced bootloader 2 to 9 1 0 EXT8 has no effect – 1 1 EXT8 has no effect –

and EXT8 pins is copied into the PMST register. Table 7 describes the

Table 7. Bootloader Pin Configurations

Table 8. ’C206 Bootloader Options

xxxxxxxx xxx0 0000 8-bit serial SSP, ext FSX, CLKX 2 xxxxxxxx xxx0 0100 16-bit serial SSP, ext FSX, CLKX 3 xxxxxxxx xxx0 1000 8-bit parallel I/O 4 xxxxxxxx xxx0 1100 16-bit parallel I/O 5 xxxxxxxx xxx1 0000 8-bit ASP/UART 6 xxxxxxxx SRCE AD01 8-bit EPROM 7 xxxxxxxx SRCE AD10 16-bit EPROM 8 xxxxxxxx ADDR bb11 Warm boot 9

Figure 3 shows the program flow of the ’C206 bootloader. See the number SPRU127

)

for more information about the ’C206 bootloader.

TMS320C20x User’s Guide

(literature

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bootloader (continued)

(LEVEXT8 = 0?)

Start

C203

Style

Loader?

Yes

Perform

C203 Style

Bootloading

Warm Boot

(2 LSBs = 11)

Perform UART/

Asynchronous

Serial Load

Perform 8-Bit Synchronous

Serial Load

(Bit 2 of BRS = 0)

Yes

Serial/

Parallel

Load?

(2 LSBs of

BRS = 00?)

Yes

UART/

Asynchronous

Serial Load?

(Bit 4 of

BRS = 1?)

Yes

Parallel

I/O Load?

(Bit 3 of

BRS = 1?)

8-Bit

Synchronous

Serial Load?

(Bit 2 of

BRS = 0?)

No No

Yes

8-Bit

EPROM?

(2 LSBs = 01?)

Perform

8-Bit

EPROM

8-Bit

Parallel I/O?

(Bit 2 of

BRS = 0?)

Yes

Perform

8-Bit

Parallel I/O

No Perform 16-Bit

16-Bit

EPROM?

(2 LSBs = 10?)

YesYes

Perform

16-Bit

EPROM

Parallel I/O

(Bit 2 of BRS = 1)

Perform 16-Bit

Synchronous

Serial Load

(Bit 2 of BRS = 1)

Figure 3. ’C206 Bootloader Program Flow

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on-chip registers

The TMS320C206/TMS320LC206 includes three registers mapped to internal data space and sixteen (16) registers mapped to internal I/O space. T able 9 describes these registers and shows their respective addresses. In the table, DS

NAME ADDRESS

IMR DS@0004 0000h

GREG DS@0005 0000h

IFR DS@0006 0000h

†

refers to data space and IS† refers to I/O space.

Table 9. On-Chip Memory and I/O Mapped Registers

VALUE AT

†

RESET

DESCRIPTION

‡

Interrupt-mask register. This seven-bit register individually masks or enables the seven interrupts. Bit 0 shares external interrupt INT1 ties to the timer interrupt, TINT synchronous serial port, SSP . Bit 5, TXRXINT the asynchronous serial port, ASP . Bit 6 is reserved for monitor-mode-emulation operations and must always be set to 0 except in conjunction with emulation-monitor operations. Bits 7–15 are not used in the TMS320C206/TMS320LC206. IMR is set to 0 at reset. A bit value of 0 disables an interrupt, and a value of 1 enables an interrupt.

Global-memory allocation register . This 8-bit register specifies the size of the global memory space. GREG is set to 0 at reset.

Interrupt-flag register. The seven-bit IFR indicates that the TMS320C206/TMS320LC206 has latched an interrupt from one of the seven maskable interrupts. Bit 0 shares external interrupt INT1 Bits 3 and 4, RINT transmit and receive interrupts for the ASP. Bit 6 is reserved for monitor-mode-emulation operations and must always be set to 0 except in conjunction with emulation-monitor operations. Writing a 1 to the respective interrupt bit clears an active flag and the respective pending interrupt. Writing a 1 to an inactive flag has no effect. Bits 7–15 are not used in the TMS320C206/TMS320LC206. IFR is set to 0 at reset.

Bit 0 - Processor mode status bit (PMST). latches in the MP/MC pin at reset. This bit can be written to configure microprocessor (1) or microcomputer mode (0). Bits 1 and 2 configure the SARAM mapping either in program memory, data memory, or both. At reset, these bits are 11, the SARAM is mapped in both program and data space. DON (bit 2) PON (bit 1)

and HOLD. INT2 and INT3 share bit 1. Bit 2 ties to the timer interrupt, TINT.

and XINT, respectively, are for the SSP. Bit 5, TXRXINT, shares the

. Bits 3 and 4, RINT and XINT, respectively, are for the

and HOLD. INT2 and INT3 share bit 1. Bit 2

, shares the transmit and receive interrupts for

0 0 - SARAM not mapped, address in external

PMST IS@FFE4 0006h

CLK IS@FFE8 0000h

ICR IS@FFEC 0000h

†

DS = data space and IS = input/output ports

‡

‘x’ indicates undefined or value based on the pin levels at reset.

0 1 - SARAM in on-chip program memory at 0x8000h 1 0 - SARAM in on-chip data memory at 0x800h 1 1 - SARAM in on-chip program and data memory

Bit 3 - LEVEXT8 bit. This bit captures the status of the EXT8 pin 1 at reset only. Bit 15 – Fast RD signal in place of the RD signal (pin 45). This is intended to help achieve zero wait-state memory interface with slow memory devices. At reset, this bit is 0 and selects RD signal at pin 45. If the FRDN bit is written with a 1, the read signal at pin 45 is replaced with the inverted R/W

CLKOUT1 on or off. At reset, this bit is configured as a zero for the CLKOUT1 pin to be active. If this bit is a 1, CLKOUT1 pin is turned off.

Interrupt-control register. This register is used to determine which interrupt is active since INT1

and HOLD share the same interrupt vector as INT2 and INT3. A portion of this register is for mask/unmask (similar to IFR). At reset, all bits are zeroed, thereby allowing the HOLD mode to be enabled. The MODE bit is used by the hold-generating circuit to determine if a HOLD

or INT1 is active.

memory

(reset value)

, FRDN. This bit provides software control to select an inverted R/W

as the

signal.

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on-chip registers (continued)

Table 9. On-Chip Memory and I/O Mapped Registers (Continued)

VALUE AT

NAME ADDRESS

SDTR IS@FFF0 xxxxh Synchronous serial port (SSP) transmit and receive register

SSPCR IS@FFF1 0030h

SSPST IS@FFF2 0000h Synchronous serial-port status register

SSPMC IS@FFF3 0000h Synchronous serial-port multichannel register

ADTR IS@FFF4 xxxxh Asynchronous serial port (ASP) transmit and receive register

ASPCR IS@FFF5 0000h

IOSR IS@FFF6 18xxh

BRD IS@FFF7 0001h

TCR IS@FFF8 0000h

PRD IS@FFF9 FFFFh

TIM IS@FFFA FFFFh

SSPCT IS@FFFB 0000h Synchronous serial-port counter register.

WSGR IS@FFFC 0FFFh

†

DS = data space and IS = input/output ports

‡

‘x’ indicates undefined or value based on the pin levels at reset.

†

RESET

DESCRIPTION

‡

Synchronous serial-port control register. This register controls serial-port operation as defined by the register bits.

Asynchronous serial-port control register. This register controls the asynchronous serial-port operation.

I/O-status register. IOSR is used for detecting current levels on pins IO0–IO3 when defined as inputs.

Baud-rate generator. 16-bit register used to determine baud rate of UART. No data is transmitted/received if BRD is zero.

Timer-control register. This ten-bit register contains the control bits that define the divide-down ratio, start/stop the timer, and reload the period. Also contained in this register is the current count in the prescaler. Reset initializes the timer divide-down ratio to 0 and starts the timer.

Timer-period register. This 16-bit register contains the 16-bit period that is loaded into the timer counter when the counter borrows or when the reload bit is activated. Reset initializes the PRD to 0xFFFF.

Timer-counter register. This 16-bit register contains the current 16-bit count of the timer. Reset initializes the TIM to 0xFFFF.

Wait-state generator register. This register contains 12 control bits to enable 0 to 7 wait states to program, data, and I/O space. Reset initializes WSGR to 0x0FFFh.

external interface

The ’C206 devices can address up to 64K × 16 words of memory (or registers) in each of the program, data, and I/O spaces. On-chip memory, when enabled, occupies some of this off-chip range. In data space, the high 32K words can be mapped dynamically either locally or globally using the GREG register as described in the

TMS320C20x User’s Guide

asserts BR

low (with timing similar to the address bus).

The CPU of the ’C206 schedules a program fetch, data read, and data write on the same machine cycle. This is because from on-chip memory , the CPU can execute all three of these operations in the same cycle. However, the external interface multiplexes the internal buses to one address and one data bus. The external interface sequences these operations to complete first the data write, then the data read, and finally the program read.

The ’C206 supports a wide range of system-interfacing requirements. Program, data, and I/O address spaces provide interface to memory and I/O, thus maximizing system throughput. The full 16-bit address and data bus, along with the PS

, DS, and IS space-select signals, allow addressing of 64K 16-bit words in each of the three

spaces. I/O design is simplified by having I/O treated the same way as memory. I/O devices are mapped into the I/O

address space using the processor’s external address and data buses in the same manner as memory-mapped devices.

(literature number SPRU127). A data-memory access that is mapped as global

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external interface (continued)

The ’C206 external parallel interface provides various control signals to facilitate interfacing to the device. The R/W

output signal is provided to indicate whether the current cycle is a read or a write. The STRB output signal provides a timing reference for all external cycles. For convenience, the device also provides the RD WE

output signals, which indicate a read and a write cycle, respectively , along with timing information for those cycles. The availability of these signals minimizes external gating necessary for interfacing external devices to the ’C206.

Interface to memory and I/O devices of varying speeds is accomplished by using the READY line. When transactions are made with slower devices, the ’C206 processor waits until the other device completes its function and then signals the processor via the READY line. Once a ready indication is provided back to the ’C206 from the external device, execution continues.

and the

The bus request (BR global memory accesses. Global memory is external data-memory space in which the BR at the beginning of the access. When an external global memory device receives the bus request, it responds by asserting the READY signal after the global memory access is arbitrated and the global access is completed.

The TMS320C206/TMS320LC206 supports zero-wait-state reads on the external interface. However, to avoid bus conflicts, writes take two cycles. This allows the TMS320C206/TMS320LC206 to buffer the transition of the data bus from input to output (or from output to input) by a half cycle. In most systems, TMS320C206/TMS320LC206 ratio of reads to writes is significantly large to minimize the overhead of the extra cycle on writes.

Wait states can be generated when accessing slower external resources. The wait states operate on machine-cycle boundaries and are initiated either by using READY or by using the software wait-state generator. READY can be used to generate any number of wait states.

) signal is used in conjunction with the other ’C206 interface signals to arbitrate external

signal is asserted

interrupts and subroutines

The ’C206 implements three general-purpose interrupts, INT3–INT1, along with reset (RS), and the nonmaskable interrupt (NMI Internal interrupts are generated by the synchronous serial port (RINT and XINT), by the timer (TINT), UART, (TXRXINT), and by the software-interrupt (TRAP , INTR and NMI) instructions. Interrupts are prioritized, with RS having the highest priority, (followed by NMI), and UART having the lowest priority. Additionally, any interrupt except RS be cleared, set, or tested using its own dedicated bit in the interrupt flag register (IFR). The reset and NMI functions are not maskable.

and NMI can be individually masked with a dedicated bit in the interrupt mask register (IMR) and can

), which are available for external devices to request the attention of the processor.

All interrupt vector locations are on two-word boundaries so that branch instructions can be accommodated in those locations if desired.

A built-in mechanism protects multicycle instructions from interrupts. If an interrupt occurs during a multicycle instruction, the interrupt is not processed until the instruction completes execution. This mechanism applies to instructions that are repeated (using the RPT instruction) and to instructions that become multicycle because of wait states.

Each time an interrupt is serviced or a subroutine is entered, the program counter (PC) is pushed onto an internal hardware stack, providing a mechanism for returning to the previous context. The stack contains eight locations, allowing interrupts or subroutines to be nested up to eight levels deep.

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reset

The ’C206 utilizes an active-low reset (RS and PLLRS) input for the core, peripherals, and PLL. A minimum pulse duration of six cycles ensures that an asynchronous reset signal properly resets the device.

The ’C206 fetches its first instruction approximately sixteen cycles after the rising edge of RS The reset action halts all operations whether they are complete or not; therefore, the state of the system and

its data cannot be maintained through the reset operation. For example, if the device is writing to an external resource when the reset is initiated, the write is aborted; this may corrupt the contents or configuration of system resources. Therefore, it is necessary to reinitialize the system after a reset.

power-down modes

The ’C206 implements a power-down mode in which the ’C206 core enters a dormant state and dissipates less power. The power-down mode is invoked by executing an IDLE instruction. While the device is in power-down mode, the on-chip peripherals continue to operate.

While the ’C206 is in a power-down mode, all of its internal contents are maintained; this allows operation to continue unaltered when the power-down mode is terminated. All CPU activities are halted when the IDLE instruction is executed, but the CLKOUT1 pin remains active depending on the status of the CLKOUT1-pin control register (CLK). The peripheral circuits continue to operate, allowing peripherals such as serial ports and timers to take the CPU out of its powered-down state. The power-down mode, when initiated by an IDLE instruction, is terminated upon receipt of an interrupt.

software-controlled wait-state generator

Due to the fast cycle time of the ’C206 devices, it is often necessary to operate with wait states to interface with external logic or memory. For many systems, one wait state is adequate.

The software wait-state generator can be programmed to generate between zero and seven wait states for a given space. Software wait states are configured by way of the wait-state generator register (WSGR). The WSGR includes four 3-bit fields to configure wait states for the following external memory spaces: data space (DSWS), upper program space (PSUWS), lower program space (PSLWS), and I/O space (ISWS). The wait-state generator enables wait states for a given memory space based on the value of the corresponding three bits, regardless of the condition of the READY signal. The READY signal can be used to generate additional wait states. All bits of the WSGR are set to 1 at reset, so that the device can operate from slow memory immediately after reset.The WSGR register (shown in Figure 4) resides at I/O port FFFCh. See Table 7 for the bit settings of the various fields in the WSGR for wait-state programming. See Table 8 for a description of the various WSGR fields.

1514131211109876543210

Reserved

0 R/W–1 11 R/W–111 R/W–111 R/W–111

LEGEND: 0 = Always read as zeros, R = Read Access, W= Write Access, – n = Value after reset

ISWS DSWS PSUWS PSLWS

Figure 4. TMS320C206/TMS320LC206 Wait-State Generator Register (WSGR)

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software-controlled wait-state generator (continued)

Table 10. TMS320C206/TMS320LC206 Wait-State(s) Programming

ISWS, DSWS, PSUWS, OR PSLWS BITS WAIT STATES FOR I/O, DATA, OR PROGRAM

000 0 001 1 010 2 011 3 100 4 101 5 110 6 111 7

Table 11. ’C206 Wait-State Generator Register (WSGR)

BITS NAME DESCRIPTION

External program-space wait states (lower). PSLWS determines that between 0 to 7 wait states are applied to

2–0 PSLWS

5–3 PSUWS

8–6 DSWS

11–9 ISWS

15–12 Reserved Don’t care. Always read as 0.

all reads and writes to off-chip lower program-space address (0h–7FFFh). The memory cycle can be further extended using the READY signal. The READY signal does not override the wait states generated by PSL WS. These bits are set to 1 (active) by reset (RS

External program-space wait states (upper). PSUWS determines that between 0 to 7 wait states are applied to all reads and writes to off-chip upper program space address (8000h–0FFFFh). The memory cycle can be further extended using the READY signal. The READY signal does not override the wait states generated by PSUWS. These bits are set to 1 (active) by reset (RS

External data space wait states. DSWS determines that between 0 to 7 wait states are applied to all reads and writes to off-chip data space. The memory cycle can be further extended using the READY signal. The READY signal does not override the wait states generated by DSWS. These bits are set to 1 (active) by reset (RS

External input /output-space wait state. ISWS determines that between 0 to 7 wait states are applied to all reads and writes to off-chip I/O space. The memory cycle can be further extended using the READY signal. The READY signal does not override the wait states generated by ISWS. These bits are set to 1 (active) by reset (RS

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DIGITAL SIGNAL PROCESSORS

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timer

The TMS320C206/TMS320LC206 includes a 20-bit timer, implemented with a 16-bit main counter (TIM), and a 4-bit prescaler counter (PSC). The count values are written into the 16-bit period register (PRD), and the 4-bit timer divide-down register (TDDR). The TIM and the PRD are 16-bit registers mapped to I/O space, while the PSC and the TDDR are 4-bit fields of the timer control register (TCR). The TCR is an I/O mapped register which also includes other control bits for the timer (see Table 9).

When the timer is started, the TIM is loaded with the contents of PRD, and the PSC is loaded with the contents of the TDDR. The PSC is decremented by one at each CLKOUT1 cycle. On the CLKOUT1 cycle after the PSC decrements to zero, the PSC is reloaded with the contents of TDDR, and the TIM is decremented by one. That is, every (TDDR+1) CLKOUT1 cycles, the TIM is decremented by one. When the TIM decrements to zero, it is reloaded with the contents of the PRD on the following CLKOUT1 cycle, and a new timer interval begins. Therefore, the timer interrupt rate is defined as follows: CLKOUT1 frequency/[(TDDR+1) (PRD+1)].

The timer can be used to generate periodic CPU interrupts based on CLKOUT1. Each time the TIM decrements to zero, a timer interrupt (TINT) is generated, and a pulse equal to the duration of a CLKOUT1 cycle is generated on the TOUT pin. The timer provides a convenient means of performing periodic I/O, context switching , or other functions.

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input clock options

The TMS320C206/TMS320LC206 provides multiple clock modes of divide-by-two and multiply-by-one, -two, or -four. The clock mode configuration cannot be dynamically changed without executing another reset.

synchronous serial port

A full duplex (bidirectional) 8-bit or 16-bit on-chip synchronous serial port provides direct communication with serial devices such as codecs, serial A/D (analog-to-digital) converters, and other serial systems. The interface signals are compatible with codecs and many other serial devices. The serial port can also be used for intercommunication between processors in multiprocessing applications.

For data transmission, three signals are necessary to connect the transmit pins of the transmitting device with the receive pins of the receiving device. The transmitted serial data signal (DX) sends the actual data. The transmit frame synchronization signal (FSX) initiates the transfer (at the beginning of the packet), and the transmit clock signal (CLKX) clocks the bit transfer. The corresponding pins on the receive device are DR, FSR and CLKR, respectively . When the serial port is not used, the device can be configured to shut off the serial port internal clocks, allowing the device to run in a lower power mode of operation.

The continuous mode of the synchronous serial port (SSP) provides operation that, once initiated, requires no further frame synchronization pulses when transmitting at maximum frequency. Both receive and transmit operations have a four-word deep first-in first-out (FIFO) buffer . The advantage of having a FIFO is to alleviate the CPU from being loaded with the task of servicing a receive- or transmit-data operation after each word, allowing a continuous communications stream of 16-bit data packets. The maximum transmission rate for both transmit and receive operations is CPU divided by two or CLKOUT1(frequency)/2. Therefore, the maximum rate at 40 million instructions per second (MIPS) is 20 megabits per second (Mbps). The serial port is fully static and functions at arbitrarily low clocking frequencies. When the serial ports are in reset, the device can be configured to shut off the serial port internal clocks, allowing the device to run in a lower power mode of operation.

The synchronous serial port also has capabilities to facilitate a glueless interface with multiple codecs and other peripherals. The SSP registers are complemented with three registers—status register (SSPST), multichannel register (SSPMC), and counter register (SSPCT). The SSPST includes control and status bits. Additional control bits are provided in the SSPMC to control the multichannel and prescaled clocks/frames features. The SSPCT register contains the two 8-bit prescalers to provide variable synchronous shift clock (CLKX) and frame syncs (FSX).

asynchronous serial port

The asynchronous serial port is full-duplexed and transmits and receives 8-bit data only. For transmit and receive operations, there is one start bit and one or two configurable stop bits by way of the asynchronous serial-port control register (ASPCR). Double-buffering of transmit/receive data is used in all modes. Baud rate generation is accomplished via the baud rate divisor (BRD) register. This port also features an auto-baud-detection logic.

scan-based emulation

TMS320C206/TMS320LC206 devices incorporate scan-based emulation logic for code-development and hardware-development support. Scan-based emulation allows the emulator to control the processor in the system without the use of intrusive cables to the full pinout of the device. The scan-based emulator communicates with the ’C206 by way of the IEEE 1 149.1 compatible (JTAG) interface. The TMS320C206 and TMS320LC206 DSPS, like the TMS320F206, TMS320C203, and TMS320LC203, do not include boundary scan. The scan chain of these devices is useful for emulation function only.

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multiprocessing

The flexibility of the ’C206 allows configurations to satisfy a wide range of system requirements; the device can be used in a variety of system configurations, including but not limited to the following:

A standalone processor

A multiprocessor with devices in parallel

A slave/host multiprocessor with global memory space

A peripheral processor interfaced via processor-controlled signals to another device

For multiprocessing applications, the ’C206 has the capability of allocating global memory space and communicating with that space via the BR by more than one device. Global-memory access must be arbitrated. The 8-bit memory-mapped global memory allocation register (GREG) specifies part of the ’C206’s data memory as global external memory . The contents of the register determine the size of the global memory space. If the current instruction addresses an operand within that space, BR by the READY line.

The TMS320C206/TMS320LC206 supports direct memory access (DMA) to its local (off-chip) program, data, and I/O spaces. Two signals, HOLD mechanism. The Hold feature is enabled by clearing the mode bit in the interrupt control register (ICR IS@FFECh). When the Hold feature is enabled, and HOLD puts the address, data, and memory control signals (PS state. When this occurs, the HOLDA control of the external bus. It is important to note that when the mode bit is set to one, the Hold feature is disabled, and the HOLD feature is disabled, and HOLD signals to enter the high-impedance mode, and it does not cause the assertion of HOLDA bit is cleared to zero, and the Hold feature is enabled.

is asserted to request control of the bus. The length of the memory cycle is controlled

/INT1 pin functions as a general-purpose interrupt (INT1). That is, when the Hold

/INT1 is asserted, the IDLE instruction does not cause the memory interface

and ready control signals. Global memory is data memory shared

/INT1, an input to the device, and HOLDA, an output, control this

/INT1 is asserted, executing an IDLE instruction

, DS, IS, STRB, R/W, and WE) in a high-impedance

signal is asserted, acknowledging that the processor has relinquished

. At reset, the mode

instruction set

The ’C206 microprocessor implements a comprehensive instruction set that supports both numeric-intensive signal-processing operations and general-purpose applications, such as multiprocessing and high-speed control. Source code for the ’C1x and ’C2x DSPs is upwardly compatible with the ’C206.

For maximum throughput, the next instruction is prefetched while the current one is being executed. Because the same data lines are used to communicate to external data, program, or I/O space, the number of cycles an instruction requires to execute varies depending upon whether the next data operand fetch is from internal or external memory. Highest throughput is achieved by maintaining data memory on chip and using either internal or fast external program memory.

addressing modes

The ’C206 instruction set provides four basic memory-addressing modes: direct, indirect, immediate, and register.

In direct addressing, the instruction word contains the lower seven bits of the data memory address. This field is concatenated with the nine bits of the data-memory-page pointer (DP) to form the 16-bit data memory address. Thus, in the direct-addressing mode, data memory is effectively paged with a total of 512 pages, each page containing 128 words.

Indirect addressing accesses data memory through the auxiliary registers. In this addressing mode, the address of the instruction operand is contained in the currently selected auxiliary register. Eight auxiliary registers (AR0–AR7) provide flexible and powerful indirect addressing. T o select a specific auxiliary register, the auxiliary register pointer (ARP) is loaded with a value from 0 to 7 for AR0 through AR7, respectively.

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addressing modes (continued)

There are seven types of indirect addressing: autoincrement or autodecrement, postindexing by either adding or subtracting the contents of AR0, single-indirect addressing with no increment or decrement, and bit-reversed addressing [used in Fast Fourier Transforms (FFT s)] with increment or decrement. All operations are performed on the current auxiliary register in the same cycle as the original instruction, following which the current auxiliary register and ARP can be modified.

In immediate addressing, the actual operand data is provided in a portion of the instruction word or words. There are two types of immediate addressing: long and short. In short-immediate addressing, the data is contained in a portion of the bits in a single-word instruction. In long-immediate addressing, the data is contained in the second word of a two-word instruction. The immediate-addressing mode is useful for data that does not need to be stored or used more than once during the course of program execution, such as initialization values, constants, etc.

The register-addressing mode uses operands in CPU registers either explicitly , such as with a direct reference to a specific register, or implicitly, with instructions that intrinsically reference certain registers. In either case, operand reference is simplified because 16-bit values can be used without specifying a full 16-bit operand address or immediate value.

repeat feature

The repeat function can be used with instructions (as defined in T able 13) such as multiply/accumulates (MAC and MACD), block moves (BLDD and BLPD), I/O transfers (IN/OUT ), and table read/writes (TBLR/TBLW ). These instructions, although normally multicycle, are pipelined when the repeat feature is used, and they effectively become single-cycle instructions. For example, the table-read instruction may take three or more cycles to execute, but when the instruction is repeated, a table location can be read every cycle.

When using the repeat feature, the repeat counter (RPTC) is loaded with the addressed-data-memory location if direct or indirect addressing is used, or an 8-bit immediate value if short-immediate addressing is used. The RPTC register is loaded by the RPT instruction. This results in a maximum of N + 1 executions of a given instruction when RPTC is loaded with N. RPTC is cleared by reset. Once a repeat instruction (RPT) is decoded, all interrupts, including NMI (except reset), are masked until the completion of the repeat loop.

instruction set summary

This section summarizes the opcodes of the instruction set for the ’C206 digital signal processor. This instruction set is a superset of the ’C1x and ’C2x instruction sets. The instructions are arranged according to function and are alphabetized by mnemonic within each category. The symbols in Table 12 are used in the instruction set summary table (Table 13). The Texas Instruments ’C20x assembler accepts ’C2x instructions.

The number of words that an instruction occupies in program memory is specified in column 3 of Table 13. Several instructions specify two values separated by a slash mark (/) for the number of words. In these cases, different forms of the instruction occupy a different number of words. For example, the ADD instruction occupies one word when the operand is a short-immediate value or two words if the operand is a long-immediate value.

The number of cycles that an instruction requires to execute is in column 3 of Table 13. All instructions are assumed to be executed from internal program memory (RAM) and internal data dual-access memory. The cycle timings are for single-instruction execution, not for repeat mode.

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instruction set summary (continued)

Table 12. Opcode Symbols

SYMBOL DESCRIPTION

A Address ACC Accumulator ACCB Accumulator buffer ARx Auxiliary register value (0–7) BITx 4-bit field specifies which bit to test for the BIT instruction BMAR Block-move address register DBMR Dynamic bit-manipulation register I Addressing-mode bit II...II Immediate operand value INTM Interrupt-mode flag bit INTR# Interrupt vector number K Constant PREG Product register PROG Program memory RPTC Repeat counter SHF, SHFT 3/4-bit shift value TC Test-control bit

Two bits used by the conditional execution instructions to represent the conditions TC, NTC, and BIO.

T P Meaning

TMS320C206, TMS320LC206

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

T P

TREGn Temporary register n (n = 0, 1, or 2)

Z L V C

0 0 BIO 0 1 TC=1 1 0 TC=0 1 1 None of the above conditions

4-bit field representing the following conditions:

Z: ACC = 0 L: ACC < 0 V: Overflow

C: Carry A conditional instruction contains two of these 4-bit fields. The 4-LSB field of the instruction is a 4-bit mask field. A 1 in the corresponding mask bit indicates that the condition is being tested. The second 4-bit field (bits 4–7) indicates the state of the conditions designated by the mask bits as being tested. For example, to test for ACC ≥ 0, the Z and L fields are set while the V and C fields are not set. The next 4-bit field contains the state of the conditions to test. The Z field is set to indicate testing of the condition ACC = 0, and the L field is reset to indicate testing of the condition ACC ≥ 0. The conditions possible with these 8 bits are shown in the BCND and CC instructions. T o determine if the conditions are met, the 4-LSB bit mask is ANDed with the conditions. If any bits are set, the conditions are met.

low

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TMS320C206, TMS320LC206

DESCRIPTION

ADD

AND immediate with accumulator with shift

2/2

AND immediate with accumulator with shift of 16

2/2

Branch unconditionally

2/4

BANZ

Branch on auxiliary register not zero

2/4/2

Branch if TC bit ≠ 0

2/4/2

Branch if TC bit

2/4/2

Branch on carry

2/4/2

Branch if accumulator ≥ 0

2/4/2

Branch if accumulator > 0

2/4/2

Branch on I/O status low

2/4/3

Branch if accumulator ≤ 0

2/4/2

Branch if accumulator

2/4/2

Branch on no carr

2/4/2

Branch if no overflo

2/4/2

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

instruction set summary (continued)

Table 13. TMS320C206/TMS320LC206 Instruction Set Summary

’x20x

MNEMONIC

ABS Absolute value of accumulator 1/1 1011 1110 0000 0000

Add to accumulator with shift 1/1 0010 SHFT IADD RESS Add to high accumulator 1/1 0110 0001 IADD RESS Add to accumulator short immediate 1/1 1011 1000 KKKK KKKK

Add to accumulator long immediate with shift 2/2 1011 1111 1001 SHFT ADDC Add to accumulator with carry 1/1 0110 0000 IADD RESS ADDS Add to low accumulator with sign extension suppressed 1/1 0110 0010 IADD RESS ADDT Add to accumulator with shift specified by T register 1/1 0110 0011 IADD RESS ADRK Add to auxiliary register short immediate 1/1 01 11 1000 KKKK KKKK

AND with accumulator 1/1 0110 1110 IADD RESS

AND

APAC Add P register to accumulator 1/1 1011 1110 0000 0100

BACC Branch to address specified by accumulator 1/4 1011 1110 0010 0000

BCND

WORDS/ CYCLES

MSB LSB

1011 1111 1011 SHFT

1011 1110 1000 0001

0111 1001 IADD RESS

0111 1011 IADD RESS

1110 0001 0000 0000

1110 0010 0000 0000

1110 001 1 0001 0001

1110 001 1 1000 1100

1110 001 1 0000 0100

1110 0000 0000 0000

1110 001 1 1100 1100

1110 001 1 0100 0100

1110 001 1 0000 0001

1110 001 1 0000 0010

OPCODE

16-Bit Constant

Branch Address

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DESCRIPTION

Branch if accumulator ≠ 0

2/4/2

BCND

Branch on overflo

2/4/2

Branch if accumulator

2/4/2

Block move from data memory to data memory source immediate

2/3

BLDD

†

Block move from data memory to data memory destination immediate

2/3

BLPD

Block move from program memory to data memor

2/3

CALL

Call subroutine

2/4

Conditional call subroutine

2/4/2

Input data from port

2/2

LACC

Load accumulator long immediate with shift

2/2

instruction set summary (continued)

Table 13. TMS320C206/TMS320LC206 Instruction Set Summary (Continued)

TMS320C206, TMS320LC206

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

’x20x

MNEMONIC

BIT Test bit 1/1 0100 BITx IADD RESS BITT Test bit specified by TREG 1/1 0110 1111 IADD RESS

CALA Call subroutine indirect 1/4 1011 1110 0011 0000

Configure block as data memory 1/1 1011 1110 0100 0100 Enable interrupt 1/1 1011 1110 0100 0000 Reset carry bit 1/1 1011 1110 0100 1110

CLRC

CMPL Complement accumulator 1/1 1011 1110 0000 0001 CMPR Compare auxiliary register with auxiliary register AR0 1/1 1011 1111 0100 01CM DMOV Data move in data memory 1/1 0111 0111 IADD RESS IDLE Idle until interrupt 1/1 1011 1110 0010 0010

INTR

†

In ’C20x devices, the BLDD instruction cannot be used with memory-mapped registers IMR, IFR, and GREG.

Reset overflow mode 1/1 1011 1110 0100 0010 Reset sign-extension mode 1/1 1011 1110 0100 0110 Reset test/control flag 1/1 1011 1110 0100 1010 Reset external flag 1/1 1011 1110 0100 1100

Software-interrupt 1/4 1011 1110 011K KKKK Load accumulator with shift 1/1 0001 SHFT IADD RESS

Zero low accumulator and load high accumulator 1/1 0110 1010 IADD RESS

WORDS/

CYCLES

MSB LSB

1110 001 1 0000 1000

1110 001 1 0010 0010

1110 001 1 1000 1000

1010 1000 IADD RESS

1010 1001 IADD RESS

1010 0101 IADD RESS

0111 1010 IADD RESS

1110 10TP ZLVC ZLVC

1010 1111 IADD RESS

16BIT I/O PORT ADRS

1011 1111 1000 SHFT

OPCODE

Branch Address

Routine Address

16-Bit Constant

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TMS320C206, TMS320LC206

DESCRIPTION

LACL

LAR

Load auxiliary register long immediate

2/2

LDP

LST

MAC

Multiply and accumulate

2/3

MACD

Multiply and accumulate with data move

2/3

MAR

MPY

OR immediate with accumulator with shift

2/2

OR immediate with accumulator with shift of 16

2/2

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

instruction set summary (continued)

Table 13. TMS320C206/TMS320LC206 Instruction Set Summary (Continued)

’x20x

MNEMONIC

Load accumulator immediate short 1/1 1011 1001 KKKK KKKK

Zero accumulator 1/1 1011 1001 0000 0000

Zero low accumulator and load high accumulator 1/1 0110 1010 IADD RESS

Zero low accumulator and load low accumulator with no sign extension 1/1 0110 1001 IADD RESS LACT Load accumulator with shift specified by T register 1/1 0110 1011 IADD RESS

Load auxiliary register 1/2 0000 0ARx IADD RESS

Load auxiliary register short immediate 1/2 1011 0ARx KKKK KKKK

Load data-memory page pointer 1/2 0000 1101 IADD RESS

Load data-memory page pointer immediate 1/2 1011 110P AGEP OINT LPH Load high-P register 1/1 01 11 0101 IADD RESS

Load status register ST0 1/2 0000 1110 IADD RESS

Load status register ST1 1/2 0000 1111 IADD RESS LT Load TREG 1/1 01 11 0011 IADD RESS LTA Load TREG and accumulate previous product 1/1 01 11 0000 IADD RESS LTD Load TREG, accumulate previous product, and move data 1/1 0111 0010 IADD RESS LTP Load TREG and store P register in accumulator 1/1 01 11 0001 IADD RESS LTS Load TREG and subtract previous product 1/1 01 11 0100 IADD RESS

Load auxiliary register pointer 1/1 1000 1011 1000 1ARx

Modify auxiliary register 1/1 1000 1011 IADD RESS

Multiply (with TREG, store product in P register) 1/1 0101 0100 IADD RESS

Multiply immediate 1/1 110C KKKK KKKK KKKK MPYA Multiply and accumulate previous product 1/1 0101 0000 IADD RESS MPYS Multiply and subtract previous product 1/1 0101 0001 IADD RESS MPYU Multiply unsigned 1/1 0101 0101 IADD RESS NEG Negate accumulator 1/1 1011 1110 0000 0010

NMI NOP No operation 1/1 1000 1011 0000 0000 NORM Normalize contents of accumulator 1/1 1010 0000 IADD RESS

OUT Output data to port 2/3 PAC Load accumulator with P register 1/1 101 1 1110 0000 0011

Nonmaskable interrupt 1/4 1011 1110 0101 0010

OR with accumulator 1/1 0110 1101 IADD RESS

WORDS/ CYCLES

MSB LSB

1011 1111 0000 1ARx

1010 0010 IADD RESS

1010 001 1 IADD RESS

1011 1111 1100 SHFT

1011 1110 1000 0010

0000

16BIT

OPCODE

16-Bit Constant

1100

IADD

I/O

PORT

RESS ADRS

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DESCRIPTION

RPT

SST

SPLK

Store long immediate to data memor

2/2

Subtract from accumulator long immediate with shift

2/2

instruction set summary (continued)

Table 13. TMS320C206/TMS320LC206 Instruction Set Summary (Continued)

TMS320C206, TMS320LC206

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

’x20x

MNEMONIC

POP Pop top of stack to low accumulator 1/1 1011 1110 0011 0010 POPD Pop top of stack to data memory 1/1 1000 1010 IADD RESS PSHD Push data-memory value onto stack 1/1 01 11 0110 IADD RESS PUSH Push low accumulator onto stack 1/1 1011 1110 0011 1100 RET Return from subroutine 1/4 1110 1111 0000 0000

RETC ROL Rotate accumulator left 1/1 1011 1110 0000 1 100 ROR Rotate accumulator right 1/1 1011 1110 0000 1101

SACH Store high accumulator with shift 1/1 1001 1SHF IADD RESS SACL Store low accumulator with shift 1/1 1001 0SHF IADD RESS SAR Store auxiliary register 1/1 1000 0ARx IADD RESS SBRK Subtract from auxiliary register short immediate 1/1 01 11 1100 KKKK KKKK

SETC

SFL Shift accumulator left 1/1 1011 1110 0000 1001 SFR Shift accumulator right 1/1 1011 1110 0000 1010 SPAC Subtract P register from accumulator 1/1 1011 1110 0000 0101 SPH Store high-P register 1/1 1000 1101 IADD RESS SPL Store low-P register 1/1 1000 1100 IADD RESS SPM Set P register output shift mode 1/1 1011 1111 IADD RESS SQRA Square and accumulate 1/1 0101 0010 IADD RESS SQRS Square and subtract previous product from accumulator 1/1 0101 0011 IADD RESS

SUB

Conditional return from subroutine 1/4/2 1110 11TP ZLVC ZLVC

Repeat instruction as specified by data-memory value 1/1 0000 1011 IADD RESS Repeat instruction as specified by immediate value 1/1 101 1 1011 KKKK KKKK

Set carry bit 1/1 1011 1110 0100 1111 Configure block as program memory 1/1 1011 1110 0100 0101 Disable interrupt 1/1 1011 1110 0100 0001 Set overflow mode 1/1 1011 1110 0100 0011 Set test/control flag 1/1 1011 1110 0100 1011 Set external flag XF 1/1 1011 1110 0100 1 101 Set sign-extension mode 1/1 1011 1110 0100 0111

Store status register ST0 1/1 1000 1110 IADD RESS Store status register ST1 1/1 1000 1111 IADD RESS

Subtract from accumulator with shift 1/1 001 1 SHFT IADD RESS Subtract from high accumulator 1/1 0110 0101 IADD RESS Subtract from accumulator short immediate 1/1 1011 1010 KKKK KKKK

WORDS/ CYCLES

MSB LSB

1010 1110 IADD RESS

1011 1111 1010 SHFT

OPCODE

16-Bit Constant

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TMS320C206, TMS320LC206

DESCRIPTION

Exclusive-OR immediate with accumulator with shift

2/2

Exclusive-OR immediate with accumulator with shift of 16

2/2

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

instruction set summary (continued)

Table 13. TMS320C206/TMS320LC206 Instruction Set Summary (Continued)

’x20x

MNEMONIC

SUBB Subtract from accumulator with borrow 1/1 0110 0100 IADD RESS SUBC Conditional subtract 1/1 0000 1010 IADD RESS SUBS Subtract from low accumulator with sign extension suppressed 1/1 0110 0110 IADD RESS SUBT Subtract from accumulator with shift specified by TREG 1/1 0110 0111 IADD RESS TBLR Table read 1/3 1010 0110 IADD RESS TBLW T able write 1/3 1010 0111 IADD RESS TRAP Software interrupt 1/4 1011 1110 0101 0001

Exclusive-OR with accumulator 1/1 0110 1100 IADD RESS

XOR

ZALR Zero low accumulator and load high accumulator with rounding 1/1 0110 1000 IADD RESS

WORDS/ CYCLES

MSB LSB

1011 1111 1101 SHFT

1011 1110 1000 0011

OPCODE

16-Bit Constant

development support

Texas Instruments offers an extensive line of development tools for the ’x20x generation of DSPs, including tools to evaluate the performance of the processors, generate code, develop algorithm implementations, and fully integrate and debug software and hardware modules.

The following products support development of ’x20x-based applications:

Software Development Tools:

Assembler/Linker Simulator Optimizing ANSI C Compiler Application Algorithms C/Assembly Debugger and Code Profiler

†

Hardware Development Tools:

Emulator XDS510 (supports ’x20x multiprocessor system debug) The

TMS320 Family Development Support Reference Guide

(literature number SPRU011) contains information about development-support products for all TMS320 family member devices, including documentation. Refer to this document for further information about TMS320 documentation or any other TMS320 support products from Texas Instruments. There is also an additional document, the

Third-Party Support Reference Guide

(literature number SPRU052), which contains information about

TMS320

TMS320-related products from other companies in the industry . T o receive copies of TMS320 literature, contact the Literature Response Center at 800/477-8924.

See Table 14 for complete listings of development-support tools for the ’C20x. For information on pricing and availability, contact the nearest TI field sales office or authorized distributor.

†

The T exas Instruments C Source Debugger, Revision 1.00.01, is not compatible with ’C206/’LC206 silicon revisions. Contact TI for more information regarding the most recent debugger revision and release.

XDS510 is a trademark of Texas Instruments Incorporated.

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TMS320C206, TMS320LC206

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

development support (continued)

Table 14. ’C206 Development-Support Tools

DEVELOPMENT TOOL PLATFORM PART NUMBER

Software

Compiler/Assembler/Linker SPARC, HP TMDS3242555-08 Compiler/Assembler/Linker PC-DOS, OS/2 TMDS3242855-02 Assembler/Linker PC-DOS, OS/2 TMDS3242850-02 Simulator PC-DOS, WIN TMDS3245851-02 Simulator SP ARC TMDS3245551-09 Digital Filter Design Package PC-DOS DFDP Debugger/Emulation Software PC-DOS, OS/2, WIN TMDS3240120 Debugger/Emulation Software SPARC TMDS3240620 Code Composer Debugger Windows CCMSP5XWIN

Hardware

’C20x Evaluation Module PC-DOS TMDS32600XX XDS510XL Emulator PC-DOS, OS/2 TMDS00510 XDS510WS Emulator SPARC TMDS00510WS

device and development-support tool nomenclature

To designate the stages in the product development cycle, Texas Instruments assigns prefixes to the part numbers of all TMS320 devices and support tools. Each TMS320 member has one of three prefixes: TMX, TMP , and TMS. T exas Instruments recommends two of three possible prefix designators for its support tools: TMDX and TMDS. These prefixes represent evolutionary stages of product development from engineering prototypes (TMX/TMDX) through fully qualified production devices/tools (TMS/TMDS). This development flow is defined below.

Device Development Evolutionary Flow: TMX Experimental device that is not necessarily representative of the final device’s electrical

specifications

TMP Final silicon die that conforms to the device’s electrical specifications but has not completed

quality and reliability verification TMS Fully qualified production device Support Tool Development Evolutionary Flow: TMDX Development-support product that has not yet completed T exas Instruments internal qualification

testing TMDS Fully qualified development-support product TMX and TMP devices and TMDX development-support tools are shipped against the following disclaimer: “Developmental product is intended for internal evaluation purposes.” TMS devices and TMDS development-support tools have been fully characterized, and the quality and reliability

of the device have been fully demonstrated. Texas Instruments standard warranty applies. Predictions show that prototype devices ( TMX or TMP) will have a greater failure rate than the standard

production devices. Texas Instruments recommends that these devices not be used in any production system

WIN and Windows are trademarks of Microsoft Corporation. Code Composer is a trademark of Go DSP Inc. SPARC is a trademark of SPARC International, Inc. PC-DOS and OS/2 are trademarks of International Business Machines Corp. HP is a trademark of Hewlett-Packard Company. XDS510XL and XDS510WS are trademarks of Texas Instruments Incorporated.

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TMS320C206, TMS320LC206 DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

device and development-support tool nomenclature (continued)

because their expected end-use failure rate is still undefined. Only qualified production devices are to be used. TI device nomenclature also includes a suffix with the device family name. This suffix indicates the package type (for example, PZ) and temperature range (for example, A). The following figures provide a legend for reading the complete device name for any TMS320 family member.

TMS 320 C 206 PZ (A)

PREFIX TEMPERATURE RANGE (DEFAULT: 0°C TO 70°C)

TMX= Experimental device TMP= Prototype device TMS= Qualified device

(B)

L=0°C to 70°C A=–40°C to 85°C

†

203 206 209

‡

DEVICE FAMILY

320 = TMS320 family

BOOTLOADER OPTION

TECHNOLOGY

C = CMOS (5-V, 3.3-V core) E = CMOS EPROM F = CMOS Flash EEPROM LC = Low-V oltage CMOS (3.3 V) VC= Low-Voltage CMOS (3 V)

†

For TMS320C206PZ, TMS320LC206PZ devices with this temperature range, L is not printed on package.

‡

TQFP = Thin Quad Flat Package

The TMS320C203 is a bootloader device without the B option.

PACKAGE TYPE

PZ = 100-pin plastic TQFP PN = 80-pin TQFP

DEVICE

’20x DSP

Figure 5. TMS320x20x Device Nomenclature

documentation support

Extensive documentation supports all of the TMS320 family generations of devices from product announcement through applications development. The types of documentation available include: data sheets, such as this document, with design specifications; complete user’s guides for all devices and development-support tools; and hardware and software applications.

For general background information on DSPs and TI devices, see the three-volume publication

Processing Applications With the TMS320 Family

Also available is the

Calculation of TMS320C20x Power Dissipation

(literature numbers SPRA012, SPRA016, and SPRA017).

application report (literature number

SPRA088).

Digital Signal

For further information regarding the ’C206 and ’LC206, please refer to the (literature number SPRU127) and the

TMS320 DSP Development Support Reference Guide

TMS320C20x User’s Guide

(literature number

SPRU01 1F). A series of DSP textbooks is published by Prentice-Hall and John Wiley & Sons to support DSP research and

education. The TMS320 newsletter,

Details on Signal Processing

, is published quarterly and distributed to update TMS320 customers on product information. The TMS320 DSP bulletin board service (BBS) provides access to information pertaining to the TMS320 family , including documentation, source code, and object code for many DSP algorithms and utilities. The BBS can be reached at 281/274-2323.

Information regarding TI DSP products is also available on the Worldwide Web at http://www .ti.com uniform resource locator (URL).

To send comments regarding the ’C206/’LC206 datasheet (SPRS065B), use the

comments@books.sc.ti.com

email address, which is a repository for feedback. For questions and support, contact the Product Information Center listed at the back of the datasheet.

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gg,

CLKIN/X2

VILLow-level input voltage

RS, CLKR, CLKX, RX

All other inputs

TAOperating free-air temperature

°C

TMS320C206, TMS320LC206

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)

Supply voltage range, V Supply voltage range, V

Input voltage range – 0.3 V to 4.6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output voltage range, ’LC206 – 0.3 V to 4.6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output voltage range, ’C206 – 0.3 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating free-air temperature range, T Storage temperature range, T

†

Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTE 1: All voltage values are with respect to VSS.

recommended operating conditions

V V V

DD DD5 SS

Supply voltage 3.3-V operation 2.7 3.3 3.6 V Supply voltage (’C206 only) 5-V operation (3.3-V core) 4.5 5 5.5 V Supply voltage 0 V

High-level input voltage, 3.3 V

High-level input voltage, 5 V (3.3-core)

(see Note 1) – 0.3 V to 4.6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(see Note 1) – 0.3 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DD5

(TMS320C206PZ, TMS320LC206PZ) 0°C to 70°C. . . . . . . . . . .

(TMS320C206PZA, TMS320LC206PZA) – 40°C to 85°C. . . . . .

– 55°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

stg

‡

MIN NOM MAX UNIT

CLKIN/X2 2.5 VDD + 0.3 RS, CLKR, CLKX, RX 2.3 VDD + 0.3 TRST, TCK 2.5 VDD + 0.3 All other inputs 2.0 VDD + 0.3 CLKIN/X2 3.0 V RS, CLKR, CLKX, RX 2.3 V TRST, TCK 3.0 V All other inputs 2.0 V

’C206 – 0.3 0.6 V ’LC206 – 0.3 0.6 V ’C206 – 0.3 0.6 V ’LC206 – 0.3 0.6 V

’C206 – 0.3 0.6 V ’LC206 – 0.3 0.7 V

DD5 DD5 DD5 DD5

+ 0.3 + 0.3 + 0.3 + 0.3

†

‡

Refer to the mechanical data package page for thermal resistance values, ΘJA (junction-to-ambient) and ΘJC (junction-to-case).

High-level output current – 300 µA

Low-level output current 2 mA

TMS320C206PZ, TMS320LC206PZ 0 70

TMS320C206PZA, TMS320LC206PZA

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443

– 40 85

TMS320C206, TMS320LC206

EMU0, EMU1

ODD

TRST

250

Su ly current

in PLLx1 mode

RAM

’C206

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

electrical characteristics over recommended ranges of supply voltage and operating free-air temperature

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

All other inputs/X1

CLKIN/X2 –300 300 FSX, FSR,

CLKR, CLKX, TRST (with internal pulldown)

PLLRS, TCK TDI, TMS

EMU0, EMU1 (with internal pullup)

All other inputs – 10 10 EMU0, EMU1

(with internal pullup)

FSX, FSR, CLKR, CLKX,

(with internal pull down)

All other 3-state outputs

CPU – (3.3 V) 45 I/O - (5V) 10

2.4/2.0

0.6

– 10 250

–200 10

–

–10 10

15 pF

µA

High-level output voltage

Low-level output voltage

Input current

Output current, high-impedance state (off-state)

Input capacitance

Output capacitance

3.3-V operation, IOH = MAX

5-V operation, IOH = MAX

3.3-V operation, IOL = MAX 0.6 5-V operation, IOL = MAX

3.3-V/5-V operation, VI = VDD or 0 V

3.3-V/5-V operation,VO = VDD or 0 V

–Device running with external clock

–Dummy code execution in B0 (NOPS and MACD)

3.3-V operation f

CLKOUT

5-V/3.3-V f

CLKOUT

= 40 MHz

’LC206 50

’

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TMS320C206, TMS320LC206

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

PARAMETER MEASUREMENT INFORMATION

Tester Pin

Electronics

LOAD

Where: I

LOAD

50 Ω

= 2 mA (all outputs) = 300 µA (all outputs) = 1.5 V = 40-pF typical load-circuit capacitance

Figure 6. Test Load Circuit

Output Under Test

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TMS320C206, TMS320LC206 DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

PARAMETER MEASUREMENT INFORMATION

signal-transition levels

The data in this section is shown for the 3.3-V and 5-V versions of the ’x20x. Note that some of the signals use different reference voltages, see the recommended operating conditions table. TTL-output levels are driven to a minimum logic-high level of 2.4 V and to a maximum logic-low level of 0.6 V.

Figure 7 shows the TTL-level outputs.

2.4 V (VOH) 80%

20%

0.6 V (VOL)

Figure 7. TTL-Level Outputs

TTL-output transition times are specified as follows:

For a

high-to-low transition

total voltage range and lower and the level at which the output is said to be low is 20% of the total voltage range and lower.

, the level at which the output is said to be no longer high is below 80% of the

For a

low-to-high transition

range and higher and the level at which the output is said to be high is 80% of the total voltage range and higher.

Figure 8 shows the TTL-level inputs.

TTL-compatible input transition times are specified as follows:

For a

high-to-low transition

of the total voltage range and lower and the level at which the input is said to be low is 10% of the total voltage range and lower.

For a

low-to-high transition

of the total voltage range and higher and the level at which the input is said to be high is 90% of the total voltage range and higher.

, the level at which the output is said to be no longer low is 20% of the total voltage

2.0 V (VIH) 90%

10%

0.8 V (VIL)

Figure 8. TTL-Level Inputs

on an input signal, the level at which the input is said to be no longer high is 90%

on an input signal, the level at which the input is said to be no longer low is 10%

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TMS320C206, TMS320LC206

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

PARAMETER MEASUREMENT INFORMATION

timing parameter symbology

Timing parameter symbols used are created in accordance with JEDEC Standard 100-A. To shorten the symbols, some of the pin names and other related terminology have been abbreviated as follows:

A Address or A[15:0] M Address, data, and control signals:

CI CLKIN/X2 MS Memory strobe pins IS CLKR Serial-port receive clock R READY CLKX Seria-port transmit clock RD Read cycle or RD CO CLKOUT1 RS RESET pins RS or RS D Data or D[15:0] S STRB or synchronous FR FSR TP Transitory phase FX FSX W Write cycle or WE H HOLD HA HOLDA IN INTN: BIO, INT1–INT3, NMI IO IOx: IO0, IO1, IO2, or IO3

Lowercase subscripts and their meanings are: The following letters and symbols and their meanings are: a access time H High c cycle time (period) L Low d delay time IV Invalid dis disable time HZ High impedance en enable time X Unknown, changing, or don’t care level f fall time h hold time r rise time su setup time t transition time v valid time w pulse duration (width)

(A, D, MS, S. BR

, RD, W, and R/W)

, DS, or PS

general notes on timing parameters

All output signals from the TMS320x206 devices (including CLKOUT1) are specified from an internal clock such that all output transitions for a given half cycle occur with a minimum of skewing relative to each other.

The signal combinations shown in the following timing diagrams may not necessarily represent actual cycles. For actual cycle examples, refer to the appropriate cycle description section of this data sheet.

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TMS320C206, TMS320LC206 DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

CLOCK CHARACTERISTICS AND TIMING

clock options

PARAMETER DIV2 DIV1

Internal divide-by-two with external crystal or external oscillator 0 0 PLL multiply-by-one 0 1 PLL multiply-by-two 1 0 PLL multiply-by-four 1 1

internal divide-by-two clock option with external crystal

†

The internal oscillator is enabled by connecting a crystal across X1 and CLKIN/X2. The crystal should be in either fundamental or overtone operation and parallel resonant, with an effective series resistance of 30 Ω and a power dissipation of 1 mW; it should be specified at a load capacitance of 20 pF. Note that overtone crystals require an additional tuned-LC circuit. Figure 9 shows an external crystal (fundamental frequency) connected to the on-chip oscillator.

X1 CLKIN/X2

Crystal

C1 C2

NOTE A: Texas Instruments encourages customers to submit samples of the device to the resonator/crystal vendor for full characterization.

Figure 9. Internal Clock Option

†

PLL modes can also be used with the on-chip oscillator. However , in this case, the PLL lock time should be based on stable clock from the on-chip oscillator.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443

(CO)

TMS320C206, TMS320LC206

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

timing at VDD = 3.3 V/5 V with the PLL circuit disabled, divide-by-two mode (’C206, ’LC206)

PARAMETER TEST CONDITIONS MIN NOM MAX UNIT

Input clock frequency TA = –40°C to 85°C, 3.3 V/5 V 0

†

This device is implemented in static logic and therefore can operate with t

approaching ∞. The device is characterized at 340 ns cycle.

c(CI)

switching characteristics over recommended operating conditions [H = 0.5t

PARAMETER

c(CO)

d(CIH-CO)

f(CO)

r(CO)

w(COL)

w(COH)

†

This device is implemented in static logic and therefore can operate with t

Cycle time, CLKOUT1 25 2t Delay time, CLKIN high to CLKOUT1 high/low 1 18 ns Fall time, CLKOUT1 5 ns Rise time, CLKOUT1 5 ns Pulse duration, CLKOUT1 low H – 3 H +3 ns Pulse duration, CLKOUT1 high H – 3 H + 3 ns

approaching ∞. The device is characterized at 340 ns cycle.

c(CI)

†

] (see Figure 10)

c(CO)

’320C206-80

’320LC206-80

MIN TYP MAX

c(CI)

80.0 MHz

†

timing requirements (see Figure 10)

’320C206-80

’320LC206-80

MIN MAX

c(CI)

f(CI)

r(CI)

w(CIL)

w(CIH)

†

This device is implemented in static logic and therefore can operate with t

Cycle time, CLKIN 12.5 Fall time, CLKIN 5 ns Rise time, CLKIN 5 ns Pulse duration, CLKIN low 5 Pulse duration, CLKIN high 5

approaching ∞. The device is characterized at 340 ns cycle.

c(CI)

†

† †

†

UNIT

ns ns

CLKIN

CLKOUT1

c(CI)

d(CIH-CO)

f(CI)

c(CO)

w(CIH)

w(COL)

w(CIL)

r(CI)

r(CO)

w(COH)

Figure 10. CLKIN-to-CLKOUT1 Timing Without PLL (using ÷2 clock option)

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TMS320C206, TMS320LC206

()

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

timing at VDD = 3.3 V/5 V with the PLL circuit enabled (’C206/’LC206)

PARAMETER TEST CONDITIONS MIN MAX UNIT

Input clock frequency, multiply-by-one 4 40.96

Input clock frequency, multiply-by-two Input clock frequency, multiply-by-four 4 10.24

TA = –40°C to 85°C, 3.3 V/5 V

4 20.48

MHz

switching characteristics over recommended operating conditions [H = 0.5t

’320C206-80 ’320LC206-80

MIN TYP MAX

c(CO)

f(CO)

r(CO)

w(COL)

w(COH)

d(TP)

†

Static design t

PARAMETER

Cycle time, CLKOUT1 25 Fall time, CLKOUT1 5 ns Rise time, CLKOUT1 5 ns Pulse duration, CLKOUT1 low H – 3 H H + 3 ns Pulse duration, CLKOUT1 high H – 3 H H + 3 ns Delay time, transitory phase—PLL synchronized after CLKIN

supplied

can approach ∞

c(CI)

timing requirements (see Figure 11)

Cycle time, CLKIN multiply-by-one 25 ns

c(CI)

f(CI)

r(CI)

w(CIL)

w(CIH)

Cycle time, CLKIN multiply-by-two 50 ns Cycle time, CLKIN multiply-by-four 100 ns Fall time, CLKIN 4 ns Rise time, CLKIN 4 ns Pulse duration, CLKIN low 12 125 ns Pulse duration, CLKIN high 12 125 ns

w(CIH)

] (see Figure 11)

c(CO)

5000 cycles

’320C206-80 ’320LC206-80

MIN MAX

UNIT

†

UNIT

CLKIN

CLKOUT1

c(CI)

f(CI)

w(COH)

c(CO)

w(COL)

f(CO)

Figure 11. CLKIN-to-CLKOUT1 Timing With PLL (Enabled)

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w(CIL)

r(CO)

r(CI)

PARAMETER

UNIT

Hold time, read data from address invalid

TMS320C206, TMS320LC206

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

MEMORY AND PERIPHERAL INTERFACE TIMING

memory and parallel I/O interface

read

timing

A15–A0, PS, DS, IS, R/W, and BR timings are all included in the timings referenced to A15–A0 except when in transition between a read operation following a write operation or a write operation following a read operation, where PS

switching characteristics over recommended operating conditions [H = 0.5t

su(A-RD)

h(RD-A)

d(COL-A)

h(COL-A)RD

d(CO-RD)

d(COL-S)

w(RDL)

w(RDH)

timing requirements [H = 0.5t

a(A)

a(C)

su(D-RD)

h(RD-D)

h(AIV-D)

su(D-COL)RD

h(COL-D)RD

a(RD)

a(S)

, DS, and IS pulse high [see t

Setup time, address valid before RD low t Hold time, address valid after RD high t Delay time, CLKOUT1 low to read address valid 6 6 ns Hold time, read address valid after CLKOUT1 low t Delay time, CLKOUT1 high/low to RD low/high – 1 6 – 2 5 ns Delay time, CLKOUT1 low to STRB low/high 0 7 0 6 ns Pulse duration, RD low (no wait states) H – 3 H + 3 H – 3 H + 3 ns Pulse duration, RD high H – 3 H + 3 H – 3 H + 3 ns

] (see Figure 12)

c(CO)

Access time, from address valid to read data

Access time, from control IS, PS, DS valid to read data

Setup time, read data before RD high t Hold time, read data after RD high t

Setup time, read data before CLKOUT1 low

Hold time, read data after CLKOUT1 low t Access time, from RD low to read data H – 14 H – 12 ns

Access time, from STRB low to read data 2H – 15 2H – 16 ns

w(MS)

ALTERNATE

SYMBOLS

su(D)RD h(D)RD

h(D)A

su(DCOL)RD h(DCOL)RD

ALTERNATE

SYMBOLS

su(A)RD h(A)RD

h(A)COLRD

0°Cto 70°C

– 40°C to 85°C

] (see Figure 12)

c(CO)

’320C206-80 ’320LC206-80

MIN MAX MIN MAX

H – 4 H – 5 ns

– 6 – 7 ns

– 4 – 5 ns

’320C206-80 ’320LC206-80

MIN MAX MIN MAX

2H – 15 2H – 15 ns

2H – 16 2H – 15 ns

15 14 ns

0 0 ns 0 1 ns

2 2 ns

11 10 ns

1 1 ns

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TMS320C206, TMS320LC206 DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

MEMORY AND PERIPHERAL INTERFACE TIMING (CONTINUED)

CLKOUT1

d(COL–A)

A0–A15

h(COL-A)RD

d(CO–RD)

su(A-RD)

a(RD)

a(A)

su(D-RD)

D0–D15

(data in)

R/W

Inverted

†

R/W

d(COL–S)

STRB

†

If the FRDN bit in the PMST register (FFE4h) is a 1, then the signal issued from the RD pin (pin 45) is an inverted R/W signal (or fast RD) replacing the RD

signal.

h(AIV-D)

h(RD-D)

w(RDH)

d(CO–RD)

su(D–COL)RD

h(COL-D)RD

w(RDL)

h(RD-A)

Figure 12. Memory Interface Read Timing

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443

PARAMETER

UNIT

TMS320C206, TMS320LC206

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

MEMORY AND PERIPHERAL INTERFACE TIMING (CONTINUED)

memory and parallel I/O interface

write

timing

switching characteristics over recommended operating conditions [H = 0.5t

su(A-W)

h(W-A)

su(A-COL)

h(COL-A)W

w(MS)

w(WL)

w(WH)

d(COL-W)

d(RD-W)

d(W-RD)

d(FRDN)

su(D-W)

h(W-D)

su(D-COL)W

h(COL-D)W

en(D-W)

dis(W-D)

, DS, and IS pulse high [see t

Setup time, address valid before WE low t Hold time, address valid after WE high t Setup time, write address valid before CLKOUT1 low t Hold time, write address valid after CLKOUT1 low t Pulse duration, IS, DS, PS inactive high t Pulse duration, WE low (no wait states) 2H – 2 2H + 4 2H – 2 2H + 4 ns Pulse duration, WE high 2H – 4 2H – 4 ns Delay time, CLKOUT1 low to WE low/high – 1 6 – 1 6 ns Delay time, RD high to WE low t Delay time, WE high to RD low t Delay time, FRDN signal with respect to R/W – 1 – 1 ns Setup time, write data valid before WE high t Hold time, write data valid after WE high t Setup time, write data valid before CLKOUT1 low t Hold time, write data valid after CLKOUT1 low t Enable time, data bus driven from WE t

Disable time, WE high to data bus high impedance 8 8 ns

w(MS)

] (see Figure 13)

c(CO)

ALTERNATE

SYMBOLS

su(A)W h(A)W su(A)CO h(A)COLW w(NSN)

d(RDW) d(WRD)

su(D)W h(D)W su(DCOL)W h(DCOL)W en(D)W

’320C206-80 ’320LC206-80

MIN MAX MIN MAX

H – 6 H – 6 ns H – 8 H – 8 ns H – 7 H – 7 ns H – 5 H – 5 ns H – 2 H – 1 ns

2H – 7 2H – 7 ns 3H – 7 3H – 7 ns

2H – 14 2H 2H – 14 2H ns

2 2 ns

2H – 17 2H – 17 ns

3 3 ns 1 1 ns

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TMS320C206, TMS320LC206 DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

MEMORY AND PERIPHERAL INTERFACE TIMING (CONTINUED)

CLKOUT1

STRB

IS, DS

or PS

A0–A15

R/W

Inverted

R/W

†

d(FRDN)

su(A-W)

d(RD-W)

w(WL)

en(D-W)

h(COL-A)W

d(COL–W)

su(D-W)

h(W-D)

su(A-COL)

d(COL–W)

w(WH)

d(W-RD)

h(W-A)

su(D-COL)W

h(COL-D)W

w(MS)

dis(W-D)

D0–D15

(data out)

†

If the FRDN bit in the PMST register (FFE4h) is a 1, then the signal issued from the RD the RD

signal.

Figure 13. Memory Interface Write Timing

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pin (pin 45) is an inverted R/W signal (or fast RD) replacing

UNIT

READY timing

TMS320C206, TMS320LC206

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

MEMORY AND PERIPHERAL INTERFACE TIMING (CONTINUED)

timing requirements [H = 0.5t

su(R-CO)

h(CO-R)

su(R-RD)

h(RD-R)

v(R-W)

h(W-R)

v(R-A)RD

v(R-A)W

CLKOUT1

READY

A0–A15

Setup time, READY before CLKOUT1 rising edge 12 12 ns Hold time, READY after CLKOUT1 rising edge 0 0 ns Setup time, READY before RD falling edge t Hold time, READY after RD falling edge t Valid time, READY after WE falling edge t Hold time, READY after WE falling edge t Valid time, READY after address valid on read t Valid time, READY after address valid on write t

su(R-CO)

su(R-RD)

v(R-A)RD

] (see Figure 14)

c(CO)

h(CO-R)

h(RD-R)

v(R-A)W

ALTERNATE

SYMBOL

su(R)RD h(R)RD v(R)W h(R)W v(R)ARD v(R)AW

h(W-R)

v(R-W)

’320C206-80 ’320LC206-80

MIN MAX MIN MAX

14 14 ns

– 2 – 2 ns

H – 14 H – 14 ns

H + 3 H + 3 ns

H – 16 H – 16 ns

2H – 16 2H – 16 ns

Figure 14. READY Timing

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TMS320C206, TMS320LC206

PARAMETER

UNIT

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

XF, TOUT, RS, INT1 – INT3, NMI, and BIO timing

switching characteristics over recommended operating conditions [H = 0.5t

’320C206-80 ’320LC206-80

MIN MAX MIN MAX

1 6 1 6 ns 1 7 1 7 ns

d(COH-TOUT)

w(TOUT)

’320C206-80 ’320LC206-80

MIN MAX MIN MAX

9 9 ns

12 12 ns 12H 12H ns 34H 34H ns

10 10 ns

0 0 ns

12H 12H ns

d(COH-XF)

d(COH-TOUT)

w(TOUT)

Delay time, CLKOUT1 high to XF valid t Delay time, CLKOUT1 high to TOUT high/low t Pulse duration, TOUT high 2H – 5 2H – 5 ns

CLKOUT1

d(COH-XF)

TOUT

Figure 15. XF and TOUT Timing

timing requirements† [H = 0.5t

su(RS-CIL)

su(RS-COL)

w(RSL)

d(RS-RST)

su(IN-COLS)

h(COLS-IN)

w(IN)

d(IN-INT)

†

INTN: BIO

‡

This parameter assumes the CLKIN to be stable before RS goes active.

Setup time, RS before CLKIN low t Setup time, RS before CLKOUT1 low t Pulse duration, RS low Delay time, RS high to reset-vector fetch t Setup time, INTN before CLKOUT1 low (synchronous) t Hold time, INTN after CLKOUT1 low (synchronous) t Pulse duration, INTN low 2H + 18 2H + 18 ns Delay time, INTN low to interrupt-vector fetch t

, INT1 – INT3, NMI

‡

] (see Figure 16 and Figure 17)

c(CO)

ALTERNATE

SYMBOL

d(XF) d(TOUT)

ALTERNATE

SYMBOL

su(RS)CIL su(RS)COL

d(EX) su(IN)COL h(IN)COL

d(IN)

] (see Figure 15)

c(CO)

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XF, TOUT, RS, INT1 – INT3, NMI, and BIO timing (continued)

TMS320C206, TMS320LC206

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

CLKIN/X2

CLKOUT1

A0–A15

PLLRS

CLKIN/X2

CLKOUT1

A0–A15

PLLRS

CLKIN/X2

CLKOUT1

su(RS-CIL)

Case A. RS and PLLRS Activated at the Same Time During Power-on Reset

su(RS-CIL)

w(RSL)

†

Case B. PLLRS Always Tied Low

†

d(RS-RST)

su(RS-COL)

d(RS-RST)

su(RS-COL)

d(RS-RST)

su(RS-COL)

A0–A15

PLLRS

Case C. Core Reset After Power Up, With PLLRS Tied High

†

The value of x depends on the reset condition as follows: Divide-by-two Mode: In this mode, the PLL is bypassed. Assuming CLKIN is stable, x=0. If the internal oscillator is used (i.e. a crystal is connected to X1 and X2 pins), x=oscillator lock-up time. The state of the PLLRS or low. PLL enabled: Assuming CLKIN is stable, x=PLL lock-up time. If the internal oscillator is used, x=oscillator lock-up time + PLL lock-up time. In case of resets after power on reset, x=0, i.e. t

w(RSL)

=12 H ns only.

is not applicable for 2 mode and should always be tied high

Figure 16. Reset Timings: Cases A, B, and C

CLKOUT1

‡

INTN: BIO, INT1 – INT3, NMI

INTN

su(IN-COLS)

w(IN)

‡

h(COLS-IN)

Figure 17. Interrupts and BIO Timing

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TMS320C206, TMS320LC206

PARAMETER

UNIT

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

external DMA timing

switching characteristics over recommended operating conditions [H = 0.5t

ALTERNATE

SYMBOL

d(CO-HA)

d(HL-HAL)

d(HH-HAH)

hz(M-HAL)

en(HAH-M)

†

The delay values will change based on the software logic (IDLE instruction) that activates HOLDA. See the number SPRU127) for functional description of HOLD logic.

‡

This parameter includes all memory control lines.

Delay time, CLKOUT1 rising to HOLDA 9 9 ns Delay time, HOLD low to HOLDA low Delay time, HOLD high to HOLDA high 10H 10H ns Address high impedance before HOLDA low Enable time, address driven from HOLDA high H – 5 H – 5 ns

CLKOUT1

HOLD/INT1

d(HL-HAL)

HOLDA

†

d(CO-HA)

‡

z(M-HAL)

d(HH-HAH)

’320C206-80 ’320LC206-80

MIN MAX MIN MAX

4H 4H ns

H – 5 H – 5 ns

TMS320C20x User’s Guide

] (see Figure 18)

c(CO)

(literature

Address Bus/

Data Bus/

Control Signals

hz(M-HAL)

Figure 18. External DMA Timing

en(HAH-M)

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443

UNIT

TMS320C206, TMS320LC206

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

serial-port receive timing

timing requirements over recommended ranges of supply voltage and operating free-air temperature [H = 0.5t

c(CLKR)

f(CLKR)

r(CLKR)

w(CLKR)

su(FR-CLKR)

su(DR-CLKR)

h(CLKR-FR)

h(CLKR-DR)

Cycle time, serial-port clock (CLKR) t Fall time, serial-port clock (CLKR) t Rise time, serial-port clock (CLKR) t Pulse duration, serial-port clock (CLKR) low/high t Setup time, FSR before CLKR falling edge t Setup time, DR before CLKR falling edge t Hold time, FSR after CLKR falling edge t Hold time, DR after CLKR falling edge t

CLKR

FSR

] (see Figure 19)

c(CO)

h(CLKR-FR)

su(FR-CLKR)

c(CLKR)

ALTERNATE

SYMBOL

c(SCK) f(SCK) r(SCK) w(SCK) su(FS) su(DR) h(FS) h(DR)

w(CLKR)

r(CLKR)

su(DR-CLKR)

’320C206-80 ’320LC206-80

MIN MAX MIN MAX

4H 4H ns

8 8 ns 8 8 ns

2H 2H ns

7 7 ns 7 7 ns 7 7 ns

10 10 ns

f(CLKR)

h(CLKR-DR)

1 2 15/7 16/8

Figure 19. Serial-Port Receive Timing

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TMS320C206, TMS320LC206

PARAMETER

UNIT

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

serial-port transmit timings (note: timings are for all SSP modes unless otherwise specified)

switching characteristics over recommended operating conditions [H = 0.5t

ALTERNATE

SYMBOL

Internal CLKX and internal FSX Internal CLKX and external FSX

d(CLKX-DX)

dis(DX-CLKX)

h(CLKX-DX)

c(CLKX)

f(CLKX)

r(CLKX)

w(CLKX)

d(CLKX-FX)

h(CLKXH-FX)

†

These timings also apply to the following pins in multichannel mode: CLKR, FSR, IO0.

Delay time, CLKX high to DX valid

Disable time, DX valid from CLKX high

Hold time, DX valid after CLKX high

Cycle time, serial-port clock (CLKX)

Fall time, serial-port clock (CLKX)

Rise time, serial-port clock (CLKX)

Pulse duration, serial-port clock (CLKX) low/high

Delay time, CLKX rising edge to FSX

Hold time, FSX after CLKX rising edge

External CLKX and internal FSX External CLKX and external FSX

Multichannel mode

SPI mode – 5 4 – 5 4

Internal CLKX t

Internal CLKX and internal FSX External CLKX and internal FSX

Multichannel

†

mode SPI mode – 5 4 – 5 4

Internal FSX t

d(DX)

dis(DX)

h(DX)

c(SCK)

f(SCK)

r(SCK)

w(SCK)

d(FS)

h(FS)H

’320C206-80 ’320LC206-80

MIN TYP MAX MIN TYP MAX

– 5 22 – 5 22

0 20 0 20

– 5 25 – 5 25

10 10 ns

– 6 – 6 ns

4H 4H ns

5 5 ns

2H – 10 2H – 10 ns

– 5 14 – 5 14

5 18 5 18

– 5 – 5 ns

] (see Figure 20)

c(CO)

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443

UNIT

TMS320C206, TMS320LC206

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

serial-port transmit timings (note: timings are for all SSP modes unless otherwise specified) (continued)

timing requirements over recommended ranges of supply voltage and operating free-air temperature [H = 0.5t

c(CLKX)

f(CLKX)

r(CLKX)

w(CLKX)

d(CLKX-FX)

h(CLKXL-FX)

h(CLKXH-FX)

Cycle time, serial-port clock (CLKX)

Fall time, serial-port clock (CLKX)

Rise time, serial-port clock (CLKX)

Pulse duration, serial-port clock (CLKX) low/high

Delay time, CLKX rising edge high to FSX

Hold time, FSX after CLKX falling edge low

Hold time, FSX after CLKX rising edge high

] (see Figure 20)

c(CO)

External CLKX t

Internal CLKX and external FSX External CLKX and external FSX

External FSX t

ALTERNATE SYMBOL

c(SCK)

f(SCK)

r(SCK)

w(SCK)

d(FS)

h(FS)

h(FS)H

’320C206-80 ’320LC206-80

MIN MAX MIN MAX

4H 4H ns

8 8 ns

2H 2H ns

2H – 8 2H – 8 ns

7 7 ns

2H – 10 2H – 10 ns

CLKX

FSX

c(CLKX)

d(CLKX-FX)

h(CLKXL-FX)

w(CLKX)

h(CLKXH-FX)

d(CLKX-DX)

1 2 15/7 16/8

w(CLKX)

h(CLKX-DX)

Figure 20. Serial-Port Transmit Timings

f(CLKX)

r(CLKX)

dis(DX-CLKX)

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443

TMS320C206, TMS320LC206

PARAMETER

UNIT

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

general-purpose input/output (I/O) pin timings

switching characteristics over recommended operating conditions

ALTERNATE

SYMBOL

d(CO-IO)

h(CO-IO)f

Delay time, CLKOUT1 falling edge to IOx output valid t Hold time, IOx output valid after CLKOUT1 falling edge t

d(IO) h(IO)out

timing requirements (see Figure 21)

ALTERNATE

SYMBOL

su(IO-CO)

h(CO-IO)r

CLKOUT1

Setup time, IOx input valid before CLKOUT1 rising edge t Hold time, IOx input valid after CLKOUT1 rising edge t

d(IO)

IOx

Output

†

Mode

IOx

Input

†

Mode

su(IO) h(IO)in

h(IO)out

(see Figure 21)

’320C206-80 ’320LC206-80

MIN MAX MIN MAX

13 13 ns

– 2 – 2 ns

’320C206-80 ’320LC206-80

MIN MAX MIN MAX

9 9 ns 5 5 ns

su(IO)

h(IO)in

†

IOx represents IO0, IO1, IO2, or IO3 input/output pins.

Figure 21. General-Purpose I/O Timings

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443

TMS320C206, TMS320LC206

DIGITAL SIGNAL PROCESSORS

SPRS065B – JUNE 1998 – REVISED JANUARY 1999

MECHANICAL DATA

PZ (S-PQFP-G100) PLASTIC QUAD FLATPACK

100

0,50

0,27 0,17

12,00 TYP

14,20

13,80 16,20

15,80

0,08

0,05 MIN

0,13 NOM

Gage Plane

0,25

0°–7°

1,45 1,35

1,60 MAX

NOTES: A. All linear dimensions are in millimeters.

B. This drawing is subject to change without notice.

C. Falls within JEDEC MO-136

PARAMETER

0,75 0,45

Seating Plane

0,08

4040149/B 10/94

Thermal Resistance Characteristics

DESCRIPTION °C/W

Junction-to-ambient 58

Junction-to-case 10

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443

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