AS3525 datasheet(38/194 Pages) AMSCO

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AS3525-A/-B C22O22

Data Sheet, Confidential

www.austriamicrosystems.com

Revision 1.13

- 194

7.2.8 Memory Stick / Memory Stick Pro Interface

The Sony memory stick interface is an AHB bus slave device. This interface conforms to following standards:

•

Memory Stick Standard Format Specifications version 1.4-00

•

Memory Stick PRO Format Specifications version 1.00-01

7.2.8.1

Block Diagram

The memory stick interface contains two main blocks, the ICON and the host controller.

Figure 14 SONY memory stick interface block diagram

7.2.8.2

I-CON

This IP is Memory Stick / Memory Stick PRO Host Controller automatic control IP with a 32-bit CPU interface. This IP automatically controls the

series of TPC-based communication with the Memory Stick in place of the CPU, and aims to reduce the burden on the Host CPU.

The contents of communication with the Memory Stick are designated in this IP by micro codes.

Features

•

32-bit CPU interface

•

Inside controller specified by microcodes

•

Buffer for two-way data transmission loaded (256 byte x 2)

•

32/16 bit access available

•

DMA support

•

General-purpose data transmit/receive FIFO (12 Bytes)

7.2.8.3

Host Controller

Features

•

Memory Stick and Memory Stick PRO support

•

FiFo memory (64 bits × 4) for two-way data transmission

•

Built-in CRC circuit

•

Memory Stick serial clock (Serial: 20 MHz (max.), Parallel: 40 MHz (max.))

•

DMA support

•

16/32/64-bit access possible

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