TMS320VC5420 datasheet(23/77 Pages) TI

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TMS320VC5420

FIXED-POINT DIGITAL SIGNAL PROCESSOR

SPRS080C – MARCH 1999 – REVISED APRIL 2000

POST OFFICE BOX 1443

• HOUSTON, TEXAS 77251–1443

16-bit host-port interface (HPI16)

The HPI16 is an enhanced 16-bit version of the ’C54x 8-bit host-port interface (HPI). The HPI16 is designed

to allow a 16-bit host to access the DSP on-chip memory, with the host acting as the master of the interface.

Figure 6 illustrates the available memory accessible by the HPI. It should be noted that neither the CPU nor DMA

I/O spaces can be accessed using the host-port interface.

16-bit bidirectional host-port interface (HPI16)

Program Page 0

Reserved

McBSP

DXR/DRR

MMRegs Only

On-Chip

DARAM 0

(Overlayed)

Prog/Data

On-Chip

SARAM 1

(Overlayed)

Prog/Data

On-Chip

SARAM 2

(32K Words)

Prog/Data

Hex

0000

001F

0020

005F

0060

3FFF

4000

7FFF

8000

FFFF

Program Page 1

Reserved

On-Chip

DARAM 0

(Overlayed)

Prog/Data

On-Chip

SARAM 1

(Overlayed)

Prog/Data

On-Chip

SARAM 3

(32K Words)

Program

Hex

10000

13FFF

14000

17FFF

18000

1FFFF

Program Page 2

Reserved

On-Chip

DARAM 0

(Overlayed)

Prog/Data

On-Chip

SARAM 1

(Overlayed)

Prog/Data

On-Chip

SARAM 4

(4K Words)

Program

Hex

20000

23FFF

24000

27FFF

28000

2FFFF

Reserved

2EFFF

2F000

Program Page 3

Reserved

On-Chip

DARAM 0

(Overlayed)

Prog/Data

On-Chip

SARAM 1

(Overlayed)

Prog/Data

Hex

30000

33FFF

34000

37FFF

38000

3FFFF

Reserved

1005F

10060

2005F

20060

3005F

30060

Figure 6. Memory Map Relative to Host-Port interface

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