Sundance SMT130 User Manual v.1.0

Download

SMT130

User Manual V1.0

User Manual (QCF42); Version 3.0, 8/11/00; © Sundance Multiprocessor Technology Ltd. 1999

Page 2 of 46 SMT130 User Manual V1.0

Revision History

Date Comments Engineer Version

24/05/04 Initial SMT130 Draft TJW 1.0

Page 3 of 46 SMT130 User Manual V1.0

Table of Contents

1 Introduction ..................................................................................................................................... 8

2 Functional Description .................................................................................................................... 9

3 Setting Up the SMT130................................................................................................................. 10

4 Memory Map................................................................................................................................. 11

4.1 PCI Bridge Chip Internal Register (BAR0)...........................................................................11

4.2 I/O Space Register Assignments (BAR1) ............................................................................ 11

4.3 Memory Space Assignments(BAR2).................................................................................... 12

5 DSP Resource Memory Map........................................................................................................13

6 Shared Memory Resource............................................................................................................ 14

7 Comports....................................................................................................................................... 15

8 Comport to PCI Interface.............................................................................................................. 16

8.1 Comport Registers (Offset 0x10, BAR1).............................................................................. 16

8.2 Control Register (Offset 0x14, BAR1).................................................................................. 16

8.3 Status Register (Offset 0x14, BAR1 , Read-Only)............................................................... 17

8.4 Interrupt Control Register (Offset 0x18, BAR1) ................................................................... 18

9 JTAG Controller ............................................................................................................................ 20

10 Using the SMT130 External/Internal JTAG with TI Tools............................................................. 22

11 Firmware Upgrades ...................................................................................................................... 23

12 Global/Local Bus Transfers, DSP <-> PCI................................................................................... 25

12.1 Mailbox Accesses................................................................................................................. 25

12.1.1 Doorbell Interrupts....................................................................................................... 26

12.2 DSP Interrupt Control...........................................................................................................26

12.3 DSP To Local Aperture 0 control and Accessing................................................................. 27

12.3.1 Global bus access protocol ......................................................................................... 29

13 Interrupts....................................................................................................................................... 32

13.1 SMT130-To-PCI Interrupts................................................................................................... 32

13.2 PCI-To-SMT130 Interrupts................................................................................................... 33

13.3 Interrupt Registers................................................................................................................ 33

13.3.1 PCI Interrupt Configuration Register(Offset 0x4C, BAR0) .......................................... 33

13.3.2 PCI Interrupt Status Register(Offset 0x48, BAR0)...................................................... 35

13.3.3 Local Bus Interrupt Mask Register(Offset 0x77, BAR0).............................................. 36

13.3.4 Local Bus Interrupt Status Register(Offset 0x76, BAR0) ............................................ 37

13.3.5 PCI Mailbox WRITE/READ Interrupt Control Register(Offset: Write 0xD0, BAR0 Read

0xD2, BAR0)................................................................................................................................. 37

13.3.6 Local Bus Mailbox WRITE/READ Interrupt Control Register(Offset: Write 0xD4, BAR0

Read 0xD6, BAR0) ....................................................................................................................... 38

Page 4 of 46 SMT130 User Manual V1.0

13.3.7 Mailbox Write/Read Interrupt Status Register(Offset: Write 0xD8, BAR0 Read 0xDA, BAR0) 39

13.3.8 INTREG Register(Offset 0x40, BAR1)........................................................................ 39

13.4 Example ............................................................................................................................... 40

14 Stand-alone mode......................................................................................................................... 42

15 Performance Figures .................................................................................................................... 43

16 Mechanical Dimensions................................................................................................................ 44

17 Power consumption ...................................................................................................................... 44

18 Cables and Connectors ................................................................................................................ 45

18.1 Comports..............................................................................................................................45

19 Where’s that Jumper?...................................................................................................................46

Page 5 of 46 SMT130 User Manual V1.0

Table of Tables

Table 1 : Table of Abbreviations..................................................................................7

Table 2 : I/O address space map...............................................................................11

Table 3 : Memory space map....................................................................................12

Table 4 : Memory space map....................................................................................13

Table 5 : Comport connector reference.....................................................................15

Table 6 : Control Register..........................................................................................16

Table 7 : Status Register...........................................................................................18

Table 8 : Interrupt Control Register............................................................................19

Table 9 : JTAG Header pin function...........................................................................24

Table 10 : PCI Interrupt Configuration Register.........................................................35

Table 11 : PCI Interrupt Status Register....................................................................36

Table 12 : Local Bus Interrupt Mask Register...........................................................37

Table 13 : Local Bus Interrupt Status Register..........................................................37

Table 14 : PCI Mailbox WRITE/READ Interrupt Control Register..............................38

Table 15 : Local Bus Mailbox WRITE/READ Interrupt Control Register....................38

Table 16 : Mailbox Write/Read Interrupt Status Register...........................................39

Table 17 : INTREG Register......................................................................................40

Page 6 of 46 SMT130 User Manual V1.0

Table of Figures

Figure 1 : TBC Data Routing .....................................................................................20

Figure 2 : JTAG header pin numbers.........................................................................23

Figure 3 : Local Bus to DSP Connectivity..................................................................25

Figure 4 : DSP Transfer via the Local Aperture 0......................................................28

Figure 5 : Timing diagram for DSP local bus access.................................................30

Figure 6 : SMT130 to PCI Interrupts..........................................................................32

Figure 7 : PCI to SMT130 Interrupts..........................................................................33

Figure 8 : Jumper Finder Diagram.............................................................................46

Page 7 of 46 SMT130 User Manual V1.0

Table Of Abbreviations

BAR Base Address Region

DMA Direct Memory Access

EPLD Electrically Programmable Logic Device

PCI Peripheral Component Interconnect

SDB Sundance Digital Bus

SRAM Static Random Access Memory

TBC Test Bus Controller

TIM Texas Instruments Module

Table 1 : Table of Abbreviations

1 Introduction

The SMT130 is a single site module carrier board that provides access to a single TIM module over the PCI bus in a PCI-104 stack system.

An on-board JTAG controller allows systems to be debugged using Code Composer Studio. There is also a JTAG input and JTAG output connector on the SMT130. This allows the debugging of all the TIM modules in the PCI-104 stack from a single JTAG controller.

The main connection to the PCI bus is via the module Global Bus. A single Comport is also mapped to the PCI bus providing support for application boot and data transfer.

A 1 MB of SRAM is mapped on to the Global Bus and can be accessed by the TIM as a global resource or by the PCI Bridge.

A through board header is provided for RESET_IN and RESET_OUT to allow multiple SMT130 carriers in a stack to be synchronised.

The board requires a 5 volt supply only, which is taken from the PCI-104 stack connector or an auxiliary power connector from stand alone applications. The 3.3 volt supply required for supplying power to the TIM module is generated locally.

User Manual (QCF42); Version 3.0, 8/11/00; © Sundance Multiprocessor Technology Ltd. 1999

2 Functional Description

The PCI interface connects to a Quick Logic EPC363 Bridge device. It has a 32-bit 33MHz PCI interface that supports I

C control, mailbox register access and direct memory reads and writes. The PCI bus is translated to a Local PCI bus, which is connected to the following devices:

• Shared SRAM 1MB

• Control EPLD that manages Comport access

• JTAG controller

• Module Global Bus

• PCI Bridge device

An on-board arbitration unit controls which device, Master Module or PCI Bridge, has access to this local PCI bus resource.

The local PCI bus has a 33MHz clock to control transfers between the various resources. This is available on the CLKIN pin on the Master site and should be selected in preference to the on-board oscillator to allow the DSP to synchronise its accesses to and from the PCI Bridge registers. The PCI Bridge has an input and output FIFO capable of transferring 256 32-bit words of data to and from the DSP at 33MHz, thus bursting a maximum local bus transfer rate of 132MB/s.

The TIM Module can access the SRAM over the PCI local bus at transfer rates up to 100MB/s. The number of wait states required by the Master Module will vary depending on the speed of the module. Maximum access rates use a 20ns strobe cycle.

The JTAG controller is based on the TI 8990 device, and drivers can be supplied for Code Composer Studio (Part Number

SMT6012).

User Manual (QCF42); Version 3.0, 8/11/00; © Sundance Multiprocessor Technology Ltd. 1999

3 Setting Up the SMT130

The SMT130 should be set up in the following way.

• Turn the system off and add the SMT130 (With TIM already installed) to the PCI-

104 stack. Take care to ensure that all stacking connector pins locate correctly. Secure the SMT130 in the stack with the pillars and screws provided. Adjust rotary switch SW1 to ensure that the SMT130 has a unique stack position. No two cards in the PCI-104 stack must have the same setting. Note only positions 0 to 3 are valid.

• Switch on PC and wait for the OS to boot up.

• Windows 95/98/NT/2000 will detect a new hardware.

• Windows should automatically find the drivers from the CD, if not browse to the

CD or if you downloaded from the ftp site to the folder where you unzipped the SMT6300 software.

• 3L application software will detect the SMT130 if the SET TISLINK variable is set

to SMT320.

• You can run the SMTBoardInfo application to detect the number of SMT130s in

your system and report their stack positions and I/O addresses. This information is required when setting up code composer for the board. SMTBoardInfo is part of the SMT6300 package.

User Manual (QCF42); Version 3.0, 8/11/00; © Sundance Multiprocessor Technology Ltd. 1999

4 Memory Map

All address information is given in bytes :

4.1 PCI Bridge Chip Internal Register (BAR0)

Please see V363EPC Local Bus PCI Bridge User Manual V1.04 (

http://www.quicklogic.com/home.asp?PageID=223&sMenuID=114#Docs) for details

of internal registers. Note: Where required, registers from the V

4.2 I/O Space Register Assignments (BAR1)

In target mode, the SMT130 is accessed by a host device across the PCI bus. This allows access to the target mode registers. The operating system or BIOS will normally allocate a base address for the target mode registers of each SMT130. Access to each register within the SMT130 is then specified by this base address and the offset shown in the table below.

datasheet have been included.

The I/O address space is decoded as shown in the table below.

Offset Register(Write) Register(Read) Width

0x0 - - 0x4 - - 0x8 - -

0x0C - -

0x10 COMPORT_OUT COMPORT_IN 32 0x14 CONTROL STATUS 32 0x18 INT_CONTROL 32

0x1C - -

0x20 to 0x3F COMPORT Configuration COMPORT Configuration

0x24 COM_SWITCH COM_SWITCH 16 0x40 INTREG INTREG 16

0x80 to 0xAF TBC Write TBC Read 16

Table 2 : I/O address space map

User Manual (QCF42); Version 3.0, 8/11/00; © Sundance Multiprocessor Technology Ltd. 1999

4.3 Memory Space Assignments(BAR2)

Address Description Notes

0x0000 0000 – 0x000F FFFF Shared Memory Bank 1MB SRAM

0x00200090

0x00200094

0x00200098

0x0020 0000-0x0020 007F Global Bus See Note 1 0x0020 0240 – 0x0020 025F SDB Data Register Input/Output 16 bit SDB Interface 0x0020 0260 – 0x0020 027F SDB Control Register SDB Control/Status

Comport Data

Mirror

Comport Status

Mirror

Comport Int_Control

Mirror

Table 3 : Memory space map

Mirror of COMPORT_OUT /

COMPORT_IN in

I/O Space

(BAR1)

See Note 2

Mirror of Control / Status in I/O

Space Register

Assignments (BAR1)

See Note 2

Mirror of Int_Control in I/O

Space Register

Assignments (BAR1)

See Note 2

Note 1: In order for the TIM to respond to accesses for this area address line GADD30 and GADD19 of the TIM site connector must be decoded as high and GADD7 and GADD5 must be decoded as low.

Note 2: These mirrors of Addresses in the I/O Space (BAR1) allow increased transfer speeds across the host Comport link (in excess of 10X increase).

User Manual (QCF42); Version 3.0, 8/11/00; © Sundance Multiprocessor Technology Ltd. 1999

5 DSP Resource Memory Map

The Master module on the SMT130 can access the various resources available, including the Shared SRAM and the PCI Bridge. Access to the PCI Bridge allows the DMA engine in the PCI Bridge to be initiated by the DSP, mailbox registers can also be manipulated. The table below illustrates the resources and their corresponding address region when accessed by the Master module.

C60 Address Access Description Notes

0xD000 0000 – 0xD00F FFFF Shared Memory Bank 1Mbyte SRAM

0x1C00 0000 – 0x1C00 00FF PCI Bridge Registers PCI Bridge Internal resisters

0x1800 0000 – 0x183F FFFF Local-to-PCI Aperture 0 PCI Bridge Aperture 0 Space

Table 4 : Memory space map

User Manual (QCF42); Version 3.0, 8/11/00; © Sundance Multiprocessor Technology Ltd. 1999

6 Shared Memory Resource

There is 1Mbyte of SRAM on the SMT130, this shared memory can be accessed by the PCI host and the TIM module. This allows applications to transfer data between the host PC and the DSP at data rates approaching 100MB/s. The address of the shared memory is shown in the memory map.

The PCI Bridge DMA processor sees the shared memory at a different address from that used for normal accesses. For normal memory access the memory base address register offset is 0x0000 0000. For DMA access address line A28 (On hardware interface) must be high, therefore DMA memory access starts at 0x4000 0000 (Not 0x1000 0000 as addressing is in bytes).

User Manual (QCF42); Version 3.0, 8/11/00; © Sundance Multiprocessor Technology Ltd. 1999

7 Comports

The SMT130 gives access to five of the six TIM Comports. Comports 0, 1, 4 and 5 are connected to 14-way surface-mount FMS connectors. This gives external access to the TIM. Note, this external access must be with in the same system stack.

Comport 3 is hard wired to the PCI interface. This gives provision to boot the TIM and configure FPGAs on the TIM.

Comport 2 has no physical connection and therefore can’t be used on a SMT130.

Comport Number SMT130 Connector reference

0 J6 1 J3 4 J4 5 J13

Table 5 : Comport connector reference

User Manual (QCF42); Version 3.0, 8/11/00; © Sundance Multiprocessor Technology Ltd. 1999

Page 16 of 46 SMT130 User Manual V1.0

8 Comport to PCI Interface

The Comport interface is memory mapped to the PCI Bridge as illustrated in table 2 : I/O address space map. The Comport uses the Control and Data registers to detect the state of the input and output FIFO. The following section describes the bit definitions for these registers.

8.1 Comport Registers (Offset 0x10, BAR1)

The host is connected to the first TIM site using Comport 3. This port is bi-directional and will automatically switch direction to meet a request from either the host or the DSP. Both input and output registers are 32 bits wide. Data can only be written to COMPORT_OUT when STATUS[OBF] is 0. Data received from the DSP is stored in COMPORT_IN and STATUS[IBF] is set to 1. Reading COMPORT_IN will clear STATUS[IBF] and allow another word to be received from the DSP.

8.2 Control Register (Offset 0x14, BAR1)

The CONTROL register can only be written. It contains flags, which control the boot modes of the first TIM site.

7-5 4 3 2 1 0

notNMI IIOF2 IIOF1 IIOF0 RESET

RESET Write a 1 to this bit to assert the reset signal to the TIM

module on the SMT130.

IIOF0 IIOF1

These bits connect to the corresponding pins on the TIM site

1. Writing 0 causes the corresponding IIOF line to go low.

IIOF2 NotNMI A 0 written to this bit will assert the active low NMI to the

TIM.

Table 6 : Control Register

Note 1. On PCI system reset, RESET is asserted to the TIM site. Note 2. The TIM reset signal on the STM130 is connected to a stacking connector

that can common up the TIM reset signals. If there is more than one SMT130 card in a system stack, the TIM reset signal can be connected together if the reset enable jumper is inserted. This maybe required where all TIMs in a system are to be reset at the same time.

8.3 Status Register (Offset 0x14, BAR1 , Read-Only)

31:22 21 20 19 18 17 16 15:12 11 10 9 8

CONFIG_L TBC

RDY

0 MASTER IBF OBF

IM2 IM1 IM0 INTD

7 6 5 4 3 2 1 0

C40 INT TBC INT IBF INT OBE INT C40 IE TBC IE IBF IE OBE IE

OBE IE Set if Comport output buffer empty interrupts enabled. IBF IE Set if Comport input buffer full interrupts enabled TBC IE Set if JTAG interrupts enabled C40 IE Set if interrupt from TIM DSP enabled OBE INT Set if the Comport output buffer becomes empty. Cleared by writing a

1 to the corresponding bit in the interrupt control register.

IBF INT Set if the Comport input buffer receives a word. Cleared by writing a

1to the corresponding bit in the interrupt control register

TBC INT Set when the TBC asserts its interrupt. Cleared by removing the

source of the interrupt in the TBC.

C40 INT Set when the TIM DSP sets its host interrupt bit. Cleared by writing a

1 to the corresponding bit in the interrupt control register.

INTD The logical OR of bits 7—4 in this register gated with each one’s

enable bit.

OBF Set when a word is written to the Comport output register. Cleared

when the word has been transmitted to the DSP. IM0 Interrupt mask 0. Returns Interrupt Control Register Bit 8. IM1 Interrupt mask 1. Returns Interrupt Control Register Bit 9. IM2 Interrupt mask 2. Returns Interrupt Control Register Bit 10. IBF Set when a word is in the Comport input register. MASTER Set when the SMT130 Bridge owns the Comport interface token. TBC RDY Reflects the current state of the TBC RDY pin. This bit is active high

and therefore and inversion of the TBC pin.

User Manual (QCF42); Version 3.0, 8/11/00; © Sundance Multiprocessor Technology Ltd. 1999

Page 18 of 46 SMT130 User Manual V1.0

CONFIG_L Reflects the state of the TIMs’ CONFIG signal. Active low.

Table 7 : Status Register

INTD is the input interrupt into the PCI Bridge from the SMT130, this can be routed to either INTA, INTB, or INTC using the PCI Interrupt Configuration Register (offset 0x4C, BAR0)

8.4 Interrupt Control Register (Offset 0x18, BAR1)

This write-only register controls the generation of interrupts on the PCI bus. Each interrupt source has an associated enable and clear flag. This register can be written with the contents of bits 7:0 of the Status Register.

10 9

DSP-PC IIOF2 En DSP-PC IIOF1 En

8 7 6 5 4 3 2 1 0

DSP-PC

IIOF0 En

CLEAR

C40 INT

0 CLEAR

IBF INT

CLEAR OBE

INT

C40 IE TBC IE IBF IE OBE IE

DSP-PC IIOF2 En Enables DSP-PC interrupts on IIOF2 DSP-PC IIOF1 En Enables DSP-PC interrupts on IIOF1 DSP-PC IIOF0 En Enables DSP-PC interrupts on IIOF0 IBF IE Comport Input Buffer Full Interrupt Enable. Allows an interrupt

to be generated when the host Comport input register is loaded with data from the C40.

OBE IE Comport Output Buffer Empty Interrupt. Allows an interrupt to

be generated when the host Comport register has transmitted its contents.

TBC IE Test Bus Controller Interrupt Enable. Interrupts from the

Texas JTAG controller are enabled when set.

C40 IE C40 Interrupt Enable. Allows a programmed interrupt to be

generated by the C40 when set.

CLEAR OBE INT Write a one to this bit to clear the interrupt resulting from a

Comport output event.

CLEAR IBF INT Write a one to this bit to clear the interrupt event resulting

from Comport input.

CLEAR C40 INT Write a one to this bit to clear down the C40 INT event.

Page 19 of 46 SMT130 User Manual V1.0

Table 8 : Interrupt Control Register

The JTAG controller which generates TBC INT must be cleared of all interrupt sources in order to clear the interrupt.

9 JTAG Controller

The SMT130 has an on board Test Bus Controller (TBC). The TBC is controlled from the PCI bus giving access to the on site TIM and/or any number of external TIMs. The TBC is a SN74ACT8990 from Texas Instruments. Please refer to the Texas Instruments data sheet for details of this controller. The TBC is accessed in I/O space at the Base address + 0x80.

JTAG Stacking Connectors

Test Bus

Switching

Matrix

Test Bus Controller

PCI bridge

TIM Site

Figure 1 : TBC Data Routing

The SMT130 can operate in two TBC modes; Master mode and Slave mode. In Master mode, the Test Bus Controller on the SMT130 drives the JTAG scan chain through the TIM site on the SMT130. If the site is not populated with a TIM then the modules SENSE signal is used to enable a tri-state buffer connecting the TDI and TDO (JTAG Data In and Data Out) on the site, maintaining the integrity of the JTAG data path. This switching is automatic. The External JTAG Connector J2 is intended to connect to a second SMT130 in the PCI-104 stack. When this is the case the SMT130 automatically detects the device and routes the test data accordingly.

The SMT130 is configured in Slave mode if the TBC and JTAG chain from another SMT130 is being used. In this case the JTAG master is connected to the SMT130 on connector J1. When stacking SMT130 carriers in a PCI-104 system, the

User Manual (QCF42); Version 3.0, 8/11/00; © Sundance Multiprocessor Technology Ltd. 1999

Page 21 of 46 SMT130 User Manual V1.0

JTAG chain can be automatically connected through the stack by inserting a JTAG coupling connector. If this coupling connector is inserted into the stack, the Lower SMT130 controls the JTAG chain. All other TBCs in the PCI-104 stack will be disabled. Any software used to access the TBC must target ONLY the lowest SMT130 in the stack. If the TJAG coupling connectors are omitted from the stack, each TBC operates independently.

10 Using the SMT130 External/Internal JTAG with TI Tools.

For details on using the SMT130 with T.I. Code Composer range, see the SMT6012 documentation.

The SMT6012 is Sundance’s driver for the T.I. Code Composer range of products and can be purchased separately. The SMT6012 is free of charge when the SMT130 is bought with the Code Composer software from Sundance.

User Manual (QCF42); Version 3.0, 8/11/00; © Sundance Multiprocessor Technology Ltd. 1999

11 Firmware Upgrades

Much of the SMT130’s control interface is achieved using CPLD’s. Sometime customers require slightly different interface protocols, which can be catered for by a firmware upgrade. To upgrade firmware, Xilinx JTAG programming software is required together with a lead to connect to the SMT130’s header. The image below shows the location of pin 1 of the CPLD JTAG connector J21. This connector is a 2x3 2mm pin header.

Pin 1 – J21 CPLD JTAG connector

Figure 2 : JTAG header pin numbers

User Manual (QCF42); Version 3.0, 8/11/00; © Sundance Multiprocessor Technology Ltd. 1999

Page 24 of 46 SMT130 User Manual V1.0

Pin Number Function

1 Vcc (5v) 2 Gnd 3 TCK 4 TDO 5 TDI 6 TMS

Table 9 : JTAG Header pin function

12 Global/Local Bus Transfers, DSP <-> PCI.

The traditional global bus interface on C6x DSP modules interfaces to the SMT130 via a local bus. This allows Global bus transfers on the DSP to be converted into local bus accesses. This allows direct DSP accesses to the PCI Bridge chip.

The resources in the PCI Bridge chip are illustrated in the figure below.

PCI Bridge Device

MailBox

Read/Write

Interrupt Control

Local To PCI Bus Apperture Control

LOCAL <-> PCI

Apperture 0

16MB Address

Space

Local Bus

Arbitration

Unit

DSP Global Bus Access

Figure 3 : Local Bus to DSP Connectivity

12.1 Mailbox Accesses

The mailbox registers can be used if small amounts of data or commands between the PCI bus and the DSP, via the local bus, need to be transferred. Rather than sending Comport data, and therefore require the DSP to be checking its Comport for commands, a mailbox write by the PCI bus can be initialized to generate an interrupt on an DSP IIOF line indicating, to the DSP, that data is available. The PCI Bridge device provides 16 8-bit mailbox registers, which may be used to transmit and receive data between the DSP and Host.

User Manual (QCF42); Version 3.0, 8/11/00; © Sundance Multiprocessor Technology Ltd. 1999

Page 26 of 46 SMT130 User Manual V1.0

The mailbox registers are accessed from the DSP through the Local-to-Internal Register (LB_IO_BASE) aperture. As illustrated in section 5, table 4 of this document this region is accessed by the DSP via a global bus access to the PCI Bridge Registers (Address : 0x1C00 0000).

The mailbox registers themselves are on byte boundaries with offsets 0xC0 -> 0xCF, from the LB_IO_BASE. As DSP global bus accesses are carried out on WORD (32bit) boundaries a write access over the global bus to 0x1C00 0000 + 0xC0 will write to the first 4 mailbox registers in the PCI Bridge device.

The mailbox registers are accessed from the PCI bus through the PCI-to-Internal Register (PCI_IO_BASE) aperture. This is accessed via the PCI Bridge Chip Internal Register (BAR0), byte offset 0xC0 -> 0xCF.

12.1.1 Doorbell Interrupts

Each of the 16 mailbox registers can generate four different interrupt requests called doorbell interrupts. Each of these requests can be independently masked for each mailbox register. The four doorbell interrupt types are:

• DSP interrupt request on read from PCI side

• DSP interrupt request on write from PCI side

• PCI interrupt request on read from DSP side

• PCI interrupt request on write from DSP side The PCI read and DSP read interrupts are OR’d together and latched in the mailbox

read interrupt status register (MAIL_RD_STAT). Similarly, the PCI write and DSP write interrupts are OR’d together and latched in the mailbox write interrupt status register (MAIL_WR_STAT). All of the interrupt request outputs from the status registers are OR’d together to form a single mailbox unit interrupt request and routed to both the Local and PCI Interrupt Control Units. When a block of mailbox registers are accessed simultaneously, for example when 4 mailbox registers are read as a word quantity, then each register affected will request a separate interrupt if programmed to do so. See section 14 for further information on Interrupts.

12.2 DSP Interrupt Control

Interrupts can be enabled from a number of different sources i.e. DSP-> Host and Host -> DSP. See section 14 for a description of these functions.

12.3 DSP To Local Aperture 0 control and Accessing

The quickest way to transfer information from the DSP to PCI Bus or vice versa is to use the Local-to-PCI Aperture 0 in the PCI Bridge device. A DSP unit may be required to transfer large amounts of acquired data to the PC host for data storage or post-processing etc. Allowing the DSP to take control of the PCI bus means that the HOST only requires to transfer data, from an internal allocated region of memory, after the transfer has been completed by the DSP. Alerting the Host that data has been transferred can be accomplished in a number of ways i.e. writing to the mailbox register, which can then generate an interrupt.

As shown in Table 4, section 5. The Local-to-PCI Aperture 0 is mapped as a region of addressable space from 0x1800 0000 – 0x183F FFFF (words).

There are a number of registers in initialise before data can be read or written via this address space.

• Unlock the PCI Bridge System register. This requires a write to

• Write the upper 8 bits of your destination address (in bytes) to the upper 8 bits

of the 32-bit Local Bus to PCI Map 0 register (LB_MAP0_RES, offset in bytes 0x5c ).

• Convert you lower 24-bit address to a word aligned value.

• Write/Read data from Local-to-PCI Aperture 0 .

The diagram below illustrates this procedure. In the example below the WritetoPCIregisters(offset,data) function writes data over

the DSP’s Global bus, at a base address of 0x1800 0000 (words), the first parameter passed to this function in the offset address in words, and the second is the data to be written.

User Manual (QCF42); Version 3.0, 8/11/00; © Sundance Multiprocessor Technology Ltd. 1999

Page 28 of 46 SMT130 User Manual V1.0

}

Receive Target address via Com-Port

Link

i.e. 0xFE12 3000

#define LB_CFG_SYSTEM (0x78>>2) (divide by 4 to word align offset address of PCI

bridge register)

WritePCIRegisters((unsigned int)LB_CFG_SYSTEM,0xA05F); // Unlock Code

WritePCIRegisters((unsigned int)LB_CFG_SYSTEM,0x22008800); // Restore Value

Unlock the system register in PCI Bridge

Write Lower 24 bits of byte TargetAddress to the LB_MAP0_RES register

#define LB_MAP0_RES (0x5C>>2) #define LB_MAP0_MEMORY_RW 0x00060000 #define LB_MAP0_ADDRESS_MASK 0xFF000000

WritePCIRegisters((unsigned int)LB_MAP0_RES,(unsigned int)(TargetAddress & LB_MAP0_ADDRESS_MASK ) | LB_MAP0_MEMORY_RW);

// The LB_MAP0_MEMORY_RW must be Or’ed with the data to ensure the other register in

/ the 32-bit word has its correct value.

WritePCIApperture0((ByteToWord32(((TargetAddress) & ~LB_MAP0_ADDRESS_MASK))),Length,buffer); Where void WritePCIApperture0(unsigned int address,unsigned long Length,unsigned int *buffer) { unsigned int Index;

Write WORD Aligned data to Local Aperture space 0.

globalbuswriteClockMB(0x18000000 + address , Length , buffer);

Figure 4 : DSP Transfer via the Local Aperture 0

Page 29 of 46 SMT130 User Manual V1.0

12.3.1 Global bus access protocol

In Figure 6, the WritePCIApperture function calls a function C6xGlobalWriteClockMB().

This function enables the DSP’s global bus to transfer Length words from the DSP’s internal memory map pointed to by buffer. The function puts the Global bust into burst mode. This interface allows a synchronous stream of data to be written to the 256 WORD input FIFO of the Local To PCI aperture 0. For more information on setting this mode from the DSP can be found in the SMT335 Users Guide. This section concentrates on the burst mode interface and arbitration mechanism for the DSP to PCI Bridge aperture access.

The Global bus interface of the DSP uses the following signals to interface to the local bus of the SMT130.

DSP Signals.

AE*, DE*, CE0*

AE*/DE* are active low address/Data enable signal driven by the SMT130, when the DSP has ownership of the Bus this signal is driven low by the SMT130 allowing the DSP to drive the Address pins and Data pins.

CE0* is the Tri-state control for the DSP’s global bus control pins. This is permanently tied low by the SMT130 as the control signal is always enable.

STRB1*

Data strobe signal from the DSP’s global bus. This is driven low when the DSP is carrying out an access cycle. The DSP waits for the RDY1* to be driven low by the SMT130 to indicate transfer has been completed. This interface is carried out in synchronous burst mode. This requires the DSP to indicate when the burst transfer is completed. This is accomplished by the DSP by pulling STAT0 low.

RDY1*

Active low transfer acknowledgement. This is driven by the SMT130 to indicate that the current transfer has been completed.

STAT0..3

DSP Status line. When all of the signals are logic ‘1’ then the DSP Global bus interface is in an idle state. When any of these signals is driven low the DSP requesting ownership of the SMT130’s local bus. STAT0 has a special status and indicates the last data packet transfer when driven low by the DSP.

A0..A30

DSP’s global Bus address lines

D0..D31

DSP’s global Bus data lines

IIOF0, IIOF1 & IIOF2

DSP’s Interrupt signals. These are open collector signals on the SMT130. They can be driven by the DSP to generate an interrupt to the host, or they can be driven by the host to interrupt the DSP.

In the timing diagram below all signals change relative to the rising LCLK signal. This signal is the H1 clock signal of the DSP when using the DSP global bus in synchronous mode (see SMT335 User Guide).

LCLK

STAT[1.3]

STRB1

RDY1

STA 0 T

AE/ E D

A[30..0]

D[31..0]

TIMReq FIFO Full

Figure 5 : Timing diagram for DSP local bus access

* LCLK Period =30nS, frequency is 33MHz.

The DSP initiates a global bus R/W by asserting the STRB1 low and STAT[1:3} change (see TIM Spec for details of STAT[1..3] details). Once the arbitration unit detects this, it waits for the last cycle of the Local bus to be completed by the PCI Bridge, before allowing the DSP to become Bus Master. Once the DSP is Master the arbitration unit drives AE and DE low to enable the DSP’s address and data lines. RDY1 is driven low by the arbitor to indicate to the DSP, on the next rising LCLK, that the data packet has been transferred. If the input FIFO (256 Words Deep) becomes

User Manual (QCF42); Version 3.0, 8/11/00; © Sundance Multiprocessor Technology Ltd. 1999

Page 31 of 46 SMT130 User Manual V1.0

full, the arbitration logic de-asserts the RDY1 signal to indicate a hold-off state. Once the data has been transferred from the FIFO to the PCI bus RDY1 is re-asserted to continue the transfer. The end of the burst access is indicated by asserting STAT0 low. If RDY1 is not active then STAT0 should remain asserted until ready is asserted and the final data transaction has been completed.

Situations can arise where a deadlock condition car arrive, i.e. the PCI bus is trying to read from the SMT130 resources while the DSP is reading from the PCI Bus. If this situation arises the arbitration unit gives the PCI Bridge device priority and services the HOST PCI access before giving bus ownership back to the DSP.

When running code composer applications to debug the DSP a reduction in the speed of the debugger will be noticed. The DSP has priority when accessing the local bus and any other accesses will only occur under the following conditions.

• Burst access is finished

• Deadlock condition occurs which releases DSP ownership of the Bus.

For multi-threaded applications the length of the DSP burst can be lowered to allow PCI bus R/W cycles to snatch cycles from the DSP.

13 Interrupts

13.1 SMT130-To-PCI Interrupts

CONTROL EPLD

INTERRUPT

CONTROL

C40 IE

IBF IE

OBE IE

INTD

PCI Bridge

INTD

INTA

TIMIIOF0

TIMIIO F1 TIMIIOF2

INTERRUPT

CONTROL

DSP IIOF0

ENABLE

DSP IIOF1

ENABLE

DSP IIOF2

ENABLE

STA TUS

DSP INT

IBF INT OBE INT

INTB

JT A G IN T

TBC INT

TBC IE

INTC

Figure 6 : SMT130 to PCI Interrupts

Interrupts can also be caused by the SMT130 by writing or reading the mailbox registers in the PCI Bridge.

13.2 PCI-To-SMT130 Interrupts

CONTROL CPLD

CONTROL

PCI

Bridge

LINT c an be caused by any PCI interrupt e.g. Mailbox

LINT

Figure 7 : PCI to SMT130 Interrupts

LINT

IIOF0 IIOF1

IIOF2

INTREG

TIMIIOF0 IE TIMIIOF1 IE

TIMIIOF2 IE

TIMIIO F0 TIMIIOF1 TIMIIOF2

13.3 Interrupt Registers

The following register are used to control PCI-To-DSP and DSP-To-PCI interrupts: Note that Control Register (Offset 0x14, BAR1) and Interrupt Control Register (Offset

0x18, BAR1) are also used to control interrupts.

13.3.1 PCI Interrupt Configuration Register(Offset 0x4C, BAR0)

Bits Name Description

31 MAILBOX Mailbox Interrupt Enable: Enables a PCI interrupt from the

mailbox unit

30 LOCAL Local Bus Direct Interrupt Enable: Enables direct local bus

to PCI interrupts 29 MASTER_PI PCI Master Local Interrupt Enable: (see V3 datasheet) 28 SLAVE_PI PCI Slave Local Interrupt Enable: (see V3 datasheet) 27 OUT-POST I2O Outbound Post List Not Empty: (see V3 datasheet)

Page 34 of 46 SMT130 User Manual V1.0

26 - Reserved 25 DMA1 DMA Channel 1 interrupt enable 24 DMA0 DMA Channel 0 interrupt enable

23-22 MODE_D INTD interrupt mode: Determines use of corresponding

interrupt pin

00 Active low level triggered input 01 High-to-low edge triggered input 10 Software cleared output. INTD pin is asserted via

an interrupt event and cleared through PCI_INT_STAT register

11 Reserved

21-20 MODE_C INTC interrupt mode (as MODE_D) 19-18 MODE_B INTB interrupt mode (as MODE_D) 17-16 MODE_A INTA interrupt mode (as MODE_D)

15 INTD_TO_LB 1=INTD will request LICU interrupts when the input is

active

0=INTD will never request LICU interrupts 14 INTC_TO_D When set INTC will act as interrupt request for INTD

output 13 INTB_TO_D When set INTB will act as interrupt request for INTD

output 12 INTA_TO_D When set INTA will act as interrupt request for INTD

output 11 INTD_TO_C When set INTD will act as interrupt request for INTC

output 10 INTC_TO_LB 1=INTC will request LICU interrupts when the input is

active

0=INTC will never request LICU interrupts

9 INTB_TO_C When set INTB will act as interrupt request for INTC

output

8 INTA_TO_C When set INTA will act as interrupt request for INTC

output

7 INTD_TO_B When set INTD will act as interrupt request for INTB

output

6 INTC_TO_B When set INTC will act as interrupt request for INTB

output

Page 35 of 46 SMT130 User Manual V1.0

5 INTB_TO_LB 1=INTB will request LICU interrupts when the input is

active

0=INTB will never request LICU interrupts

4 INTA_TO_B When set INTA will act as interrupt request for INTB

output

3 INTD_TO_A When set INTD will act as interrupt request for INTA

output

2 INTC_TO_A When set INTC will act as interrupt request for INTA

output

1 INTB_TO_A When set INTB will act as interrupt request for INTA

output

0 INTA_TO_LB 1=INTA will request LICU interrupts when the input is

active

0=INTA will never request LICU interrupts

Table 10 : PCI Interrupt Configuration Register

13.3.2 PCI Interrupt Status Register(Offset 0x48, BAR0)

Bits Name Description

31 MAILBOX Mailbox Interrupt:

1=Mailbox interrupt request active 0=No mailbox interrupts pending Cleared by clearing MAIL_RD_STAT and

MAIL_WR_STAT

30 LOCAL Local bus direct interrupt:

1=Local bus master requests a PCI interrupt 0=No operation This bit is set by writing 1 and cleared by writing 0

29-28 - Reserved

27 OUT_POST I2O outbound post list not empty: (see V3 datasheet) 26 - Reserved 25 DMA1 DMA channel 1 interrupt 24 DMA0 DMA channel 0 interrupt

23-15 - Reserved

14 INTC_TO_D INTD output from INTC input: when set (1) an interrupt has

Page 36 of 46 SMT130 User Manual V1.0

occurred on INTC

13 INTB_TO_D INTD output from INTB input: when set (1) an interrupt has

occurred on INTB

12 INTA_TO_D INTD output from INTA input: when set (1) an interrupt has

occurred on INTA

11 INTD_TO_C INTC output from INTD input: when set (1) an interrupt has

occurred on INTD

10 - Reserved

9 INTB_TO_C INTC output from INTB input: when set (1) an interrupt has

occurred on INTB

8 INTA_TO_C INTC output from INTA input: when set (1) an interrupt has

occurred on INTA

7 INTD_TO_B INTB output from INTD input: when set (1) an interrupt has

occurred on INTD

6 INTC_TO_B INTB output from INTC input: when set (1) an interrupt has

occurred on INTC 5 - Reserved 4 INTA_TO_B INTB output from INTA input: when set (1) an interrupt has

occurred on INTA 3 INTD_TO_A INTA output from INTD input: when set (1) an interrupt has

occurred on INTD 2 INTC_TO_A INTA output from INTC input: when set (1) an interrupt has

occurred on INTC 1 INTB_TO_A INTA output from INTB input: when set (1) an interrupt has

occurred on INTB 0 - Reserved

Table 11 : PCI Interrupt Status Register

13.3.3 Local Bus Interrupt Mask Register(Offset 0x77, BAR0)

Bits Name Description

7 MAILBOX Global mailbox interrupt enable 6 PCI_RD PCI read error interrupt enable 5 PCI_WR PCI write error interrupt enable 4 PCI_INT Global PCI interrupt to local interrupt enable 3 PCI_PERR PCI parity error interrupt enable 2 I2O_QWR I2O inbound post queue write interrupt enable

Page 37 of 46 SMT130 User Manual V1.0

1 DMA1 DMA channel 1 interrupt enable 0 DMA0 DMA channel 0 interrupt enable

Table 12 : Local Bus Interrupt Mask Register

13.3.4 Local Bus Interrupt Status Register(Offset 0x76, BAR0)

Bits Name Description

7 MAILBOX 1=interrupt has been requested by one or more of the

mailbox registers

0=no mailbox interrupts pending 6 PCI_RD See V3 datasheet 5 PCI_WR See V3 datasheet 4 PCI_INT See V3 datasheet 3 PCI_PERR See V3 datasheet 2 I2O_QWR See V3 datasheet 1 DMA1 See V3 datasheet 0 DMA0 See V3 datasheet

Table 13 : Local Bus Interrupt Status Register

13.3.5 PCI Mailbox WRITE/READ Interrupt Control Register(Offset: Write 0xD0, BAR0 Read 0xD2, BAR0)

Bits Name Description

15 EN15 Local interrupts on PCI bus writes/reads to mailbox15

enable 14 EN14 Same as above for mailbox 14 13 EN13 Same as above for mailbox 13 12 EN12 Same as above for mailbox 12 11 EN11 Same as above for mailbox 11 10 EN10 Same as above for mailbox 10

Page 38 of 46 SMT130 User Manual V1.0

3 EN3 Same as above for mailbox 3 2 EN2 Same as above for mailbox 2 1 EN1 Same as above for mailbox 1 0 EN0 Same as above for mailbox 0

Table 14 : PCI Mailbox WRITE/READ Interrupt Control Register

13.3.6 Local Bus Mailbox WRITE/READ Interrupt Control Register(Offset: Write 0xD4, BAR0 Read 0xD6, BAR0)

Bits Name Description

15 EN15 PCI interrupts on Local bus writes/reads to mailbox15

enable 14 EN14 Same as above for mailbox 14 13 EN13 Same as above for mailbox 13 12 EN12 Same as above for mailbox 12 11 EN11 Same as above for mailbox 11 10 EN10 Same as above for mailbox 10

9 EN9 Same as above for mailbox 9 8 EN8 Same as above for mailbox 8 7 EN7 Same as above for mailbox 7 6 EN6 Same as above for mailbox 6 5 EN5 Same as above for mailbox 5 4 EN4 Same as above for mailbox 4 3 EN3 Same as above for mailbox 3 2 EN2 Same as above for mailbox 2 1 EN1 Same as above for mailbox 1 0 EN0 Same as above for mailbox 0

Table 15 : Local Bus Mailbox WRITE/READ Interrupt Control Register

13.3.7 Mailbox Write/Read Interrupt Status Register(Offset: Write 0xD8, BAR0 Read 0xDA, BAR0)

Bits Name Description

15 EN15 1=Mailbox 15 has requested a PCI or Local write/read

interrupt 0=Mailbox 15 has not requested a PCI or Local write/read

interrupt 14 EN14 Same as above for mailbox 14 13 EN13 Same as above for mailbox 13 12 EN12 Same as above for mailbox 12 11 EN11 Same as above for mailbox 11 10 EN10 Same as above for mailbox 10

Table 16 : Mailbox Write/Read Interrupt Status Register

13.3.8 INTREG Register(Offset 0x40, BAR1)

Bits Name Description

15 - Reserved 14 - Reserved 13 - Reserved 12 - Reserved 11 - Reserved

Page 40 of 46 SMT130 User Manual V1.0

10 - Reserved

9 - Reserved 8 - Reserved 7 - Reserved 6 - Reserved 5 - Reserved 4 - Reserved 3 - Reserved 2 IIOF2EN PC to DSP TIMIIOF2 interrupt enable 1 IIOF1EN PC to DSP TIMIIOF1 interrupt enable 0 IIOF0EN PC to DSP TIMIIOF0 interrupt enable

Table 17 : INTREG Register

13.4 Example

The example below shows how the DSP can cause an interrupt on the PC by writing to mailbox register 0.

The PC must first enable the interrupts, to do this the following register bits must be altered, and an interrupt thread handler needs to be created.

PCI Interrupt Configuration Register(Offset 0x4C, BAR0) – bit 31 must be set. Local Bus Interrupt Mask Register(Offset 0x77, BAR0) – bit 7 must be set. PCI Mailbox WRITE/READ Interrupt Control Register(Offset: Write 0xD0, BAR0 Read

0xD2, BAR0) – bit 0 of the write register (0xD4) must be set.* An Interrupt service routine must be set up, in this the following register will need to

be cleared.

Mailbox Write/Read Interrupt Status Register(Offset: Write 0xD8, BAR0 Read 0xDA, BAR0) – bit 0 of the write register (0xD8) must be cleared.**

Local Bus Interrupt Status Register(Offset 0x76, BAR0) – bit 7 must be cleared.

To cause the interrupt the DSP needs to write to the mailbox register in the V

chip, this is done by writing to address 0x1C0000C0 (this will write to the first four mailboxes).

*These are two separate registers, one to enable interrupts on reads from the mailbox registers the other to enable interrupts on writes to the mailbox registers.

**These are two separate registers, one shows interrupt status for reads from the mailbox register the other to show interrupt status on writes to the mailbox registers.

Page 42 of 46 SMT130 User Manual V1.0

14 Stand-alone mode

For the SMT130 to operate in stand-alone mode Jumper J9 (Figure 8 : Jumper Finder Diagram) must be installed and the Auxiliary power header (J8) connected.

The connector type and pin out is compatible with the floppy drive power connector in on a PC power supply.

15 Performance Figures

Following are the performance figures for the SMT130. Performance figures are stated for the SMT130 with the Rev. A1 V performance figures will be issued as faster V

PCI bridging device fitted. Further

PCI bridging devices become

available and are fitted to the SMT130.

Transfer type Speed in

Mbytes/second

Standard read from Global bus TBA Standard write to Global bus TBA DMA read from Global bus TBA DMA write to Global bus TBA DMA read from shared memory 75-100 Will Vary depending on PCI traffic DMA write to shared memory 75-100 Will Vary depending on PCI traffic DMA read from SDB 75-100 Will Vary depending on PCI traffic DMA write to SDB 75-100 Will Vary depending on PCI traffic DMA read from Comport TBA DMA write to Comport TBA

Comments

16 Mechanical Dimensions

The SMT130 size is 95.8 mm by 115.5 mm. The SMT130 conforms to the physical specification defined by the PC/104 Consortium. The inter stack height may be violated if the SMT130 is populated with a “tall” TIM. In this case “connector extensions” and longer fixing pillars maybe used.

17 Power consumption

The SMT130 is powered from the PCI stack connector on the host PC controller. The card uses the 5v supply only. The following current consumption figures were measured using a LEM current clamp during a quiescent period. No TIM was fitted to the SMT130 during this test

Current drawn from 5v supply : 200mA

18 Cables and Connectors

18.1 Comports

The cables used with FMS connectors are not supplied with the SMT130. You can order them separately from Sundance with part number SMT500-FMSxx, where xx is the cable length in centimetres.

Page 46 of 46 SMT130 User Manual V1.0

19 Where’s that Jumper?

Below is a diagram to help locate the jumpers:

Rotary switch (SW1)_

Stand alone mode (J9)

Reset enable (J5)

Comport 4 (J4) Comport 0 (J6) underneath

Comport 5 (J13) Comport 1 (J3) underneath

JTAG Master (J2) JTAG Slave (J1) underneath

ux Power (J8)

CPLD JTAG Connector

Figure 8 : Jumper Finder Diagram

Sundance SMT130 User Manual v.1.0

Specifications and Main Features

Frequently Asked Questions

User Manual