TUSB3200CPAH datasheet(50/93 Pages) TI

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A–2

A.2 Internal Data Memory

The internal data memory space is a total of 256 bytes of RAM, which includes the 128 bytes of special function

registers (SFR) space. The internal data memory space is mapped in accordance with the industry standard 8052

MCU. The internal data memory space is mapped from 00h to FFh with the SFRs mapped from 80h to FFh. The lower

128 bytes are accessible with both direct and indirect addressing. However, the upper 128 bytes, which is the SFR

space, is only accessible with direct addressing.

Program Memory

FFFFh

28K - Reserved

9000h

8FFFh

Boot ROM (4K)

28K - Reserved

1000h

0FFFh

Boot ROM (4K)

0000h

External Data Memory

FFFFh

Memory Mapped Registers

(80 Bytes)

FFB0h

FFAFh

USB Endpoint Configuration

Blocks and Buffer Space

(1968 Bytes)

F800h

F7FFh

54K - Reserved

2000h

1FFFh

Code RAM (8K)

(Read/ Write)

0000h

8000h

7FFFh

Figure A–1. Boot Loader Mode Memory Map

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