This note describes one way to interface a CompactFlash Storage Card to the ADSP-BF535 EZ-KIT Lite Evaluation Board.
This document details the hardware and software implementation for connecting a CompactFlash storage card to the ADSP-BF535 Blackfin EZ-KIT Lite evaluation board. The interface utilizes the processor's External Bus Interface Unit (EBIU) to access the card as a standard ATA disk drive in Common Memory Mode.
The guide covers the pin mapping between the processor and the card, explaining signals such as Address Lines, Data Lines, Write Enable, and Output Enable. It also provides a comprehensive overview of the FAT16 file system structure, including the layout of the Boot Sector, FAT Region, and Root Directory, along with the necessary calculations for data retrieval.
| Processor Model | ADSP-BF535 Blackfin |
|---|---|
| System Clock Frequency | 120MHz |
| CompactFlash Access Time | 250ns — 300ns |
| Data Transfer Width | 16 bit |
| Supported File System | FAT16 |
This interface specifically deals with 16 bit transfers using Common Memory Mode.
The document describes interfacing a CompactFlash Storage Card to the ADSP-BF535 EZ-KIT Lite Evaluation Board.
This application note covers 16-bit transfers using Common Memory Mode.
The interface currently supports FAT16, though other FAT systems could be implemented.