Host Port Interface Expansion Bus Chapter 16 C6000 Integration Workshop Copyright © 2005 Texas Instruments. All rights reserved. T TO Technical Training

Host Port InterfaceExpansion Bus

Chapter 16

C6000 Integration Workshop

Copyright © 2005 Texas Instruments. All rights reserved. T TO

Technical Training Organization

Objectives HPI Overview HPI on the DSK Host Software Example HPI Hardware Description Optional Discussions

T TOTechnical Training

Organization

Why HPI?

CC ‘C6x‘C6x

Ser. Port

32

|| Bus

Ded. Bus

Dedicated to memory access

Dedicated to Codecs and A/D’s


Organization

Why HPI for Communication? Give host control of the transfer Allow host to access the entire

C6000 memory map Additional parallel bus for data

exchange between a host and the C6000

Provide glueless interface to many different types of hosts


Organization

What are the requirements of the dedicated bus?What are the requirements of the dedicated bus?

Why HPI?

CC ‘C6x‘C6x

Ser. Port

32

|| Bus

Ded. Bus

Dedicated to memory access

Dedicated to Codecs and A/D’s


Organization

What are the requirements for the dedicated bus?1. Address2. Data3. Control

What are the requirements for the dedicated bus?1. Address2. Data3. Control

HPI Bus

HPI Overview

C C ‘C6x‘C6xHPI

HPIC

HPIA

HPID

DMA Aux. Ch.

Addr.

Data

Memory

..


Organization

HPI Bus

HPI Overview

Since the HPI bus (HD) is only 16 bits wide, each read/write requires two operations.

Since the HPI bus (HD) is only 16 bits wide, each read/write requires two operations.

C C ‘C6x‘C6xHPI

HPIC

HPIA

HPID

DMA Aux. Ch.

Addr.

Data

Memory

..

16


Organization



Organization

Host DSK Communications The C6713 DSK has a HPI connector which brings out the pins of the

Host Port Interface On the C6416 DSK, this connector contains the muxed HPI/PCI pins Also shown, the JTAG emulation connections

DSP

JTAGEmulation

Port

HPI connector

USB

..............

JTAG

....... .............. .......


Organization



Organization

Some Ideas for Host Interface APIC6X_open( ) Open a connection to the C6000

C6X_close( ) Close a connection to the C6000

C6X_resetBoard( ) Reset the entire board

C6X_resetDsp( ) Reset only the DSP on the board

C6X_dspImageLoad( ) Load a DSP image (COFF) to DSP memory

C6X_memRead( ) Read DSP memory via the HPI

C6X_memWrite( ) Write to DSP memory via the HPI

C6X_ctrlRead( ) Read HPI control register

C6X_ctrlWrite( ) Write to HPI control register

C6X_generateInt( ) Generate a DSP interrupt

C6X_isr( ) Respond to host interrupt (HINT) from DSP

Here are some ideas for the host software (and hardware) functionality you might want to build into your system

These routines could be combined to create more advanced host functions (like routines for setting up the EDMA and such)

Unfortunately, we cannot provide these functions for you, as they must be written specific to the hardware of your hostT TO


Objectives HPI Overview HPI on the DSK Host Software Example HPI Hardware Description

Setup Control and Address Writing 32-bits Reading 32-bits Sequential Accesses

Optional Discussions


Organization

Setup HPI Control Register

HWOB0 - Big Endian

1 - Little Endian

HWOB0 - Big Endian

1 - Little Endian

HWOBreserved

015 5

HWOBreserved

1631 21

Setup the HPI Control register (HWOB-bit) to specify which 16-bits (upper or lower) are transferred first.

Similar to little/big endian. Order doesn’t matter when

writing to HPIC as the fieldsare aliased to both halves.


Organization

Setup HPIC

1. Use HCNTL[1:0] = 00b to enable access to HPIC1. Use HCNTL[1:0] = 00b to enable access to HPIC

CC ‘C6x‘C6xHPI

DMA Aux. Ch.

Addr.

Data

2

HCNTL

HPID

HPIA

Memory

..

HD16

HPIC

HCNTL ValuesHCNTL Values

HCNTL1 HCNTL0 Description

0 0 HPIC

0 1 HPIA

1 0 HPID (HPIA++)

1 1 HPID


Organization

Setup HPIC

CC ‘C6x‘C6xHPI

DMA Aux. Ch.

Addr.

Data

2

HCNTL

HPID

HPIA

Memory

..

HD16

HPIC

HR/W

1. Use HCNTL[1:0] = 00b to enable access to HPICHR/W to write (0). HD = ctrl bits (HWOB= xxx1)

1. Use HCNTL[1:0] = 00b to enable access to HPICHR/W to write (0). HD = ctrl bits (HWOB= xxx1)


Organization

Setup HPIC - 1

CC ‘C6x‘C6xHPI

DMA Aux. Ch.

Addr.

Data

HPID

HPIA

Memory

..

HD16

HPIC

HR/W

HHWIL

1. Use HCNTL[1:0] = 00b to enable access to HPICHR/W to write (0), HD = ctrl bits (HWOB = xxx1)HHWIL = 0 indicates first halfword transfer

1. Use HCNTL[1:0] = 00b to enable access to HPICHR/W to write (0), HD = ctrl bits (HWOB = xxx1)HHWIL = 0 indicates first halfword transfer

2

HCNTL


Organization

HSTRB - 2

CC ‘C6x‘C6xHPI

DMA Aux. Ch.

Addr.

Data

HPID

HPIA

Memory

..

HPIC

HSTRB

1. Use HCNTL[1:0] = 00b to enable access to HPICHR/W to write (0). HD = ctrl bits (HWOB = xxx1)HHWIL = 0 indicates first halfword transfer

2. HSTRB to indicate active

1. Use HCNTL[1:0] = 00b to enable access to HPICHR/W to write (0). HD = ctrl bits (HWOB = xxx1)HHWIL = 0 indicates first halfword transfer


HD16

HR/W

HHWIL

2

HCNTL

xxx1


Organization

Setup HPIC - 3

CC ‘C6x‘C6xHPI

DMA Aux. Ch.

Addr.

Data

HPID

HPIA

Memory

..

HPIC

3. Use HCNTL[1:0] = 00b to enable access to HPICHR/W to write (0). HD = ctrl bits (HWOB = xxx1)HHWIL = 1 indicates second halfword transfer


HD16

HR/W

HHWIL

2

HCNTL

xxx1


Organization

Setup HPIC - 4

CC ‘C6x‘C6xHPI

DMA Aux. Ch.

Addr.

Data

HPID

HPIA

Memory

..

HPIC

HSTRB





HD16

HR/W

HHWIL

2

HCNTL

xxx1xxx1


Organization

Setup HPIA - 1

C

Write

8000_0000

to

HPIA

C

Write

8000_0000

to

HPIA

‘C6x‘C6xHPI

DMA Aux. Ch.

Addr.

Data

HPID

HPIA

Memory

..

HPIC

1. Use HCNTL[1:0] = 01b to enable access to HPIAHR/W to write (0), HD = 0000HHWIL = 0 indicates first halfword transfer

1. Use HCNTL[1:0] = 01b to enable access to HPIAHR/W to write (0), HD = 0000HHWIL = 0 indicates first halfword transfer

HR/W

HHWIL

HD16

2

HCNTL

xxx1xxx1


Organization

Setup HPIA - 2

C

Write

8000_0000

to

HPIA

C

Write

8000_0000

to

HPIA

‘C6x‘C6xHPI

DMA Aux. Ch.

Addr.

Data

HPID

HPIA

Memory

..

HPIC

HSTRB

1. Use HCNTL[1:0] = 01b to enable access to HPIAHR/W to write (0). HD = 0000HHWIL = 0 indicates first halfword transfer


1. Use HCNTL[1:0] = 01b to enable access to HPIAHR/W to write (0). HD = 0000HHWIL = 0 indicates first halfword transfer


HD16

HR/W

HHWIL

2

HCNTL

xxx1xxx1

0000


Organization

Setup HPIA - 3

C

Write

8000_0000

to

HPIA

C

Write

8000_0000

to

HPIA

‘C6x‘C6xHPI

DMA Aux. Ch.

Addr.

Data

HPID

HPIA

Memory

..

HPIC

3. Use HCNTL[1:0] = 01b to enable access to HPIAHR/W to write (0). HD = 8000HHWIL = 1 indicates second halfword transfer


HD16

HR/W

HHWIL

2

HCNTL

xxx1xxx1

0000


Organization

Setup HPIA - 4

C

Write

8000_0000

to

HPIA

C

Write

8000_0000

to

HPIA

‘C6x‘C6xHPI

DMA Aux. Ch.

Addr.

Data

HPID

HPIA

Memory

..

HPIC

HSTRB





HD16

HR/W

HHWIL

2

HCNTL

xxx1xxx1

00008000


Organization

Objectives

HPI Overview HPI on the DSK Host Software Example HPI Hardware Description




Organization

Example 1: Writing a 32-bit Value - 1

1. HCNTL[1:0] = 11b (HPID)HR/W = 0 , HD = 5678HHWIL = 0


C

Write

1234_5678

to

8000_0000

C

Write

1234_5678

to

8000_0000

‘C6x‘C6xHPI

HPID

DMA Aux. Ch.

Addr.

Data

HHWIL

2

HCNTL

HPIA

8000 0000

Memory

..

HD16

HR/W

HPIC

xxx1xxx1


Organization


C

Write

1234_5678

to

8000_0000

C

Write

1234_5678

to

8000_0000

‘C6x‘C6xHPI

HPID

5678

DMA Aux. Ch.

Addr.

Data

HHWIL

2

HCNTL

HPIA

8000 0000

Memory

..

HD16

HSTRB

HR/W

HPIC

xxx1xxx1


2. HSTRB


2. HSTRBT TO



3. HCNTL[1:0] = 11b (HPID)HR/W = 0Write value: HHWIL = 1, HD = 1234


C

Write

1234_5678

to

8000_0000

C

Write

1234_5678

to

8000_0000

‘C6x‘C6xHPI

HPID

5678

DMA Aux. Ch.

Addr.

Data

HHWIL

2

HCNTL

HPIA

8000 0000

Memory

..

HD16

HR/W

HPIC

xxx1xxx1


Organization



4. HSTRB


4. HSTRB

C

Write

1234_5678

to

8000_0000

C

Write

1234_5678

to

8000_0000

‘C6x‘C6xHPI

HPID

1234 5678

DMA Aux. Ch.

Addr.

Data

HHWIL

2

HCNTL

HPIA

8000 0000

Memory

..

HD16

HR/W

HPIC

xxx1xxx1

HSTRB


Organization



4. HSTRB5. HRDY high (not-ready) until DMA is finished



C

Write

1234_5678

to

8000_0000

C

Write

1234_5678

to

8000_0000

‘C6x‘C6xHPI

HPID

1234 5678

DMA Aux. Ch.

Addr.

Data

HHWIL

2

HCNTL

HPIA

8000 0000

Memory

..

HD16

HSTRB

HRDY

HPIC

8000 0000

1234 5678

1234 5678

xxx1xxx1HR/W


Organization






C

Write

1234_5678

to

8000_0000

C

Write

1234_5678

to

8000_0000

‘C6x‘C6xHPI

HPID

1234 5678

DMA Aux. Ch.

Addr.

Data

HHWIL

2

HCNTL

HPIA

8000 0000

Memory

..

HD16

HSTRB

HPIC

8000 0000

1234 5678

1234 5678

xxx1xxx1HR/W


Organization

Objectives





Organization

Example 2: Reading a 32-bit Value - 1

1. HCNTL[1:0] = 11b (HPID)HR/W = 1Read value: HHWIL = 0


C

Read

8000_0000

C

Read

8000_0000

‘C6x‘C6xHPI

HPID

DMA Aux. Ch.

Addr.

Data

HHWIL

2

HCNTL

HPIA

8000 0000

Memory

..

HR/W

HPIC

1234 5678

xxx1xxx1


Organization



2. HSTRB, HPIA is copied to DMA address


2. HSTRB, HPIA is copied to DMA address

C

Read

8000_0000

C

Read

8000_0000

‘C6x‘C6xHPI

HPID

DMA Aux. Ch.

Addr.

Data

HHWIL

2

HCNTL

HPIA

8000 0000

Memory

..

HSTRB

HPIC

1234 5678

xxx1xxx1HR/W


Organization



2. HSTRB, HPIA is copied to DMA address3. HRDY is asserted until HD = 5678



C

Read

8000_0000

C

Read

8000_0000

‘C6x‘C6xHPI

HPID

DMA Aux. Ch.

Addr.

Data

HHWIL

2

HCNTL

HPIA

8000 0000

Memory

..

HPIC

1234 5678

xxx1xxx1

HD16

1234 5678

HR/W

HSTRB

HRDY

1234 56785678Host Data

8000 0000


Organization






C

Read

8000_0000

C

Read

8000_0000

‘C6x‘C6xHPI

HPID

DMA Aux. Ch.

Addr.

Data

HHWIL

2

HCNTL

HPIA

8000 0000

Memory

..

HPIC

1234 5678

xxx1xxx1

HD16

1234 5678

HR/W

HSTRB1234 56785678

Host Data

8000 0000


Organization




C

Read

8000_0000

C

Read

8000_0000

‘C6x‘C6xHPI

HPID

DMA Aux. Ch.

Addr.

Data

HHWIL

2

HCNTL

HPIA

8000 0000

Memory

..

HPIC

8000 0000 1234 5678

xxx1xxx1

HD16

1234 56781234 5678

HR/W

5678Host Data


Organization



5. HSTRB


5. HSTRB

C

Read

8000_0000

C

Read

8000_0000

‘C6x‘C6xHPI

HPID

DMA Aux. Ch.

Addr.

Data

HHWIL

2

HCNTL

HPIA

8000 0000

Memory

..

HPIC

1234 5678

xxx1xxx1

1234 56781234 5678

8000 0000

HD16

HR/W

HSTRB5678

Host Data


Organization



5. HSTRB6. HD = 1234


5. HSTRB6. HD = 1234

C

Read

8000_0000

C

Read

8000_0000

‘C6x‘C6xHPI

HPID

DMA Aux. Ch.

Addr.

Data

HHWIL

2

HCNTL

HPIA

8000 0000

Memory

..

HPIC

8000 0000 1234 5678

xxx1xxx1

HD16

1234 56781234 5678

HR/W

HSTRB1234_5678Host Data


Organization

Objectives





Organization

Example 3: Sequential Accesses - 1

1. HCNTL[1:0] = 10b (HPID w/HPIA++)HR/W = 1Read value: HHWIL = 0


C

Read 16

values

starting at

8000_0000

C

Read 16

values

starting at

8000_0000

‘C6x‘C6xHPI

HPID

DMA Aux. Ch.

Addr.

Data

HHWIL

2

HCNTL

HPIA

8000 0000

MemoryHPIC

1234 5678

..

1111 0000

xxx1xxx1HR/W


Organization



2. HSTRB


2. HSTRB

C

Read 16

values

starting at

8000_0000

C

Read 16

values

starting at

8000_0000

‘C6x‘C6xHPI

HPID

DMA Aux. Ch.

Addr.

Data

HHWIL

2

HCNTL

HPIA

8000 0000

MemoryHPIC

1234 5678

..

1111 0000

xxx1xxx1HR/W

HSTRB


Organization



2. HSTRB3. HRDY is high until HD = 5678, HPIA is incremented


2. HSTRB3. HRDY is high until HD = 5678, HPIA is incremented

C

Read 16

values

starting at

8000_0000

C

Read 16

values

starting at

8000_0000

‘C6x‘C6xHPI

HPID

DMA Aux. Ch.

8000 0000Addr.

Data

HHWIL

2

HCNTL

HPIA

8000

Memory

HD16

HPIC

1234 5678

..

1111 0000

xxx1xxx1HR/W

HSTRB

HRDY5678

Host Data 1234 56781234 5678

00000004


Organization



5. HSTRB6. HD = 1234


5. HSTRB6. HD = 1234

C

Read 16

values

starting at

8000_0000

C

Read 16

values

starting at

8000_0000

‘C6x‘C6x

DMA Aux. Ch.

Addr.

Data

HHWIL

2

HCNTLMemory

HD16

8000 0000

1234 5678

1234 5678

..

1111 0000

HPI

HPID

1234 5678

HPIA

8000 0000

HPIC

0004

xxx1xxx1HR/W

HSTRB

1234_5678Host Data


Organization


7. The new address in HPIA is copied to the DMA.The DMA begins to pre-fetch this address.HRDY is high until the DMA finishes.

7. The new address in HPIA is copied to the DMA.The DMA begins to pre-fetch this address.HRDY is high until the DMA finishes.

C

Read 16

values

starting at

8000_0000

C

Read 16

values

starting at

8000_0000

‘C6x‘C6x

DMA Aux. Ch.

Addr.

Data

HHWIL

2

HCNTLMemory

HD16

8000 0000

1234 5678

1234 5678

..

1111 0000

HPI

HPID

1234 5678

HPIA

8000 0000

HPIC

0004

xxx1xxx1HR/W

HSTRB

1234_5678Host Data

8000 0004

1111 0000

HRDY

0008


Organization

HPI Pin Summary

‘C6x‘C6xHostHostHCNTRL[1:0]HHWILAddress

HR/WR/W

HDS1HDS2HCS

DATASTROBES

HASALE

HBE[1:0]BE

HRDYReady

HINTINTERRUPT

HDData[15:0]

HSTRB


Organization

Interface Example

‘C6x‘C6xMC68360MC68360

HCNTRL[1:0]

HHWIL

HR/WR/W

HDS1HDS2

HCS

DSACK1

HAS

HBE[1:0]

HRDY

HINTIRQx

HD[15:0]Data[31:16]

A[3:2]

A[1]

DSACK0 Vcc GND

CSx

GNDVcc

Vcc


Organization

HPI Hardware Overview Setup Control and Address Writing 32-bits Reading 32-bits Sequential Accesses


Objectives

Control Register (and CSL for HPI)

Expansion Bus (XBUS)

Next Chapter

17. Wrap Up


Organization

HPI Hardware Overview Setup Control and Address Writing 32-bits Reading 32-bits Sequential Accesses


Objectives

Control Register (and CSL for HPI)

Expansion Bus (XBUS)

Next Chapter

17. Wrap Up


Organization

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Technical TrainingOrganization


Organization

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Host Port Interface Expansion Bus Chapter 16 C6000 Integration Workshop Copyright © 2005 Texas Instruments. All rights reserved. T TO Technical Training