TUSB3200 datasheet(51/93 Pages) TI

51 / 93 page

A–3

Program Memory

FFFFh

28K - Reserved

9000h

8FFFh

Boot ROM (4K)

24K - Reserved

0000h

External Data Memory

FFFFh

Memory Mapped Registers

(80 Bytes)

FFB0h

FFAFh

USB Endpoint Configuration

Blocks and Buffer Space

(1968 Bytes)

F800h

F7FFh

62K - Reserved

2000h

1FFFh

Code RAM (8K)

(Read/ Write)

0000h

8000h

7FFFh

Figure A–2. Normal Operating Mode Memory Map

A.3 External MCU Mode Memory Space

When using an external MCU for firmware development, only the USB configuration blocks, the USB buffer space

and the memory mapped registers are accessible by the external MCU. See Section A.4 for details. In this mode,

only address lines A0 to A10 are input to the TUSB3200 device from the external MCU. Therefore, the USB buffer

space and the memory mapped registers in the external data memory space are not fully decoded since all sixteen

address lines are not available. Hence, the USB buffer space and the memory mapped registers are actually

accessible at any 2K boundary within the total 64K external data memory space of the external MCU. As a result,

when using the TUSB3200 in the external MCU mode, nothing can be mapped to the external data memory space

of the external MCU except the USB buffer space and the memory mapped registers of the TUSB3200 device.

TUSB3200 Datasheet(PDF) 51 Page - Texas Instruments