ZILOG Z89390 Datasheet

ZILOG

GENERAL DESCRIPTION

PRELIMINARY

P

RELIMINARY

C

USTOMER PROCUREMENT SPECIFICATION

Z89390

16-BIT DIGITAL
SIGNAL PROCESSOR

CPS DC-9030-01

Z89390

The Z89390 is a CMOS Digital Signal Processor (DSP).
Single-cycle instruction execution and a Harvard bus
structure promotes efficient algorithm execution. The
processor contains 512 word data RAM and 64K word of
external program address space is accessible. Six register
pointers provide circular buffering capabilities and dual
operand fetching. Three vectored interrupts are
complemented by a six level stack. The CODEC interface
enables high-speed transfer rates to accommodate digital
audio and voice data. A dedicated Counter/Timer provides
the necessary timing signals for the CODEC interface. An
additional 13-bit timer is available for general-purpose
use.

The Z89390 is optimized to accommodate intricate signal
processing algorithms. The 20-MIP operating performance
and efficient architecture provides real-time execution.
Compression, filtering, frequency detection, audio, voice
detection/synthesis and other available algorithms can all
be accommodated. The on-board peripherals provide
additional cost advantages.

Development tools for the IBM PC include a relocatable
assembler, a linker loader debugger.

Notes:

All Signals with a preceding front slash, "/", are active Low, e.g.,
B//W (WORD is active Low); /B/W (BYTE is active Low, only).

Power connections follow conventional descriptions below:

Connection Circuit Device

Power V

Ground GND V

CC

V

DD

SS

DC 9030-00 1

ZILOG

PRELIMINARY

GENERAL DESCRIPTION (Continued)

External Program ROM

PD15-PD0

16 16

CPS DC-9030-01

Z89390

PA15-PA0

Register

Pointer

0-2

S-Bus

256 Word

RAM

0

X

16-Bit Bus

16 x16

Multiplier

24-bit

24-Bit Bus

MUX

B A

ALU

Switch

P

24

Shifter

256 Word

P Bus

RAM

1

Y

Register

Pointer

Switch

4-6

Status

(5)

PD

16 16

Instruction

Register

D Bus

Stack

PC

Ready

EXT5-1 EXT5-2

EXT6-1
EXT7-1

EXT4

13-Bit
Timer

PA

EXT6-2
EXT7-2

16-bit

I/O

Port

16

CODEC

Interface

Interrupt

EXT0-15

WAIT, RD/WR, /OS

3

EA0-2

3

RXD
TXD
SCLK
FS0
FS1

/INTO-2

/RESET

ACC

Note: EXT5, EXT6, and INTERRUPT1 are used for the CODEC Interface. EXT4 and
INTERRUPT2 are used for the 13-bit timer.

Z89391 Functional Block Diagram

User
Port

2

UI0-1

2

UO0-1

2 DC 9030-00

ZILOG

PIN DESCRIPTION

PRELIMINARY

CPS DC-9030-01

Z89390

VSS

EXT3

PA8

EXT4

PA9

VSSP

EXT5

PA10

EXT6

PA11

EXT7

TXD

PA12

EXT8

PA13

EXT9

VSS

PA14

EXT10

PA15

VCC

32

12

33

11

N/C

EXT15

PA7

VSS

PA6

EXT14

PA5

EXT12

EXT13

PA4

Z89390

84-Pin PLCC

42 43

RXD

VSS

184

PA0

VSS

VCC

PA1

PA3

EXT2

PA2

EXT1

EXT0

75

VSS

74

PD15
FS1
PD14
UO1
PD13
UO0
PD12
INT0
FS0
HALT
PD11
CLK
/D5
PD10
VDDP
PD9
EA2
PD8
EA1

54

VDD

53

VSS

PD0

UI0

PD1

EXT11

INT2

INT1

SCLK

VDD

RD//WR

UI1

PD3

PD2

PD4

WAIT

PD5

PD6

/RESET

EA0

PD7

VCC

84-Pin PLCC Pin Assignments

DC 9030-00 3

ZILOG

ABSOLUTE MAXIMUM RATINGS

PRELIMINARY

CPS DC-9030-01

Z89390

Symbol Description Min. Max. Units

V

CC

T

STG

T

A

Notes:

* Voltage on all pins with respect to GND.
† See Ordering Information.

Supply Voltage (*) –0.3 +7.0 V

Storage Temp –65° +150° C

Oper Ambient Temp † C

STANDARD TEST CONDITIONS

The characteristics listed below apply for standard test
conditions as noted. All voltages are referenced to ground.
Positive current flows into the referenced pin (Test Load).

Stresses greater than those listed under Absolute Maximum
Ratings may cause permanent damage to the device. This
is a stress rating only; operation of the device at any
condition above those indicated in the operational sections
of these specifications is not implied. Exposure to absolute
maximum rating conditions for extended period may affect
device reliability.

+5V

2.1 K Ω

From Output

Under Test

30 pF 9.1 K Ω

. Test Load Diagram

DC ELECTRICAL CHARACTERISTICS

(V

= 5V ±10%, TA = 0°C to +70°C unless otherwise specified)

DD

Symbol Parameter Condition Min. Max. Typical Units

I

DD

I

DC

V

IH

V

IL

IL Input Leakage 10 µA

V

OH

V

OL

I

FL

Supply Current V

= 5.25V 80 70 mA

DD

fclock = 20 MHz

DC Power Consumption V

= 5.25V 5 mA

DD

Input High Level 2.5 V
Input Low Level 0.8 V

Output High Voltage I
Output Low Voltage I

= –100 µAV

OH

= 2.0 mA 0.5 V

OL

– 0.2 V

DD

Output Floating Leakage Current 5 µA

4 DC 9030-00