Help Thanks to: Hale Landis, IBM, PHOENIX T13: Pete and Kent.

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Presentation transcript:

Help Thanks to: Hale Landis, IBM, PHOENIX T13: Pete and Kent

CF MMC SD CompactFlash: 16 Bits Parallel Interface CFA 1.4 supports ATA-4 MMC: 1 Bit Serial Interface MMC Commands / Responses (6 bytes) SD: 1 or 4 Bits (evolves from MMC) SD Commands / Responses SD Card: Phone, Digital Camera, Recorder Audio, GPS, HH PC, Appliance SDA: >200 Members 300 Attendees in March Meeting

Proposal Needed PC Host To SD Adapter communication: Retrieve Response data Set bus width Get special function registers Get card status (Not interpreted by FW) Retrieve protected area data Allow future command expansion

SDA Proposal PC Host To SD Adapter communication: No direct Host Support Unified Command codes, Protocols, Identify Device Info in ATA Interface Impact to Adapter company and Application Software Reserved several commands for SDA Support current ATA commands and protocols

Proposal and Changes Summit to T13 on December 2000: Reduce commands from 6 to 4 Reduce Identify Device information to 2 bits Summit only D1 command Reserve D2-D4 commands Media Card Pass Through feature set SmartMedia, PCMCIA Add aborting condition on command D3 Suggested by Phoenix

ANSI T13 / SDA TG Meeting March : Kent Pryor representing T13 presented History and Present T13 Membership requirement Standardization and voting policy Activities on ATA-6 and earlier Welcome new members Future ATA-7 Projects 3 Hours of presentation, Q/A Distribute Generic Functionality Prop

Products and Changes The SDA adapter vendors have implemented the proposal as is. The best to them is no changes If changes are required and are approved, they will phase it in.

Set Feature Command Minimum Impact to Standard Self contained command set

ATA vs. ATAPI Show as a ATA device Reduce firmware overhead Ready vs. Busy with DRQ

D1 Command Returns Media Type Return Card Specific Data Relative Card Address for SD card Return other Status like Write Protect Use Special return value 55 AA to protect Specification is changing, Product has to be changed. Especially the Identify Device information and Set Features bits