W83759A Datasheet, PDF (3/41 Pages) Winbond – ADVANCED VL-IDE DISK CONTROLLER

W83759A
FEATURES
• Pin-to-pin backward compatible with W83759 VL-IDE Interface chip
• VESA VL-Bus Rev 2.0 compatible, connects directly to local bus and four IDE drives
• Direct interface to various ANSI ATA/ATA-2/FAST ATA/IDE-2/Enhanced IDE drives
• Supports 32 and 16-bit data transfer
• Fully software programmable for command active/recovery time and address setup, data hold
time
• Built-in VL-Bus to 16-bit IO data buffer for special applications
• Fully supports Enhanced IDE features, including Fast PIO, Mode 3/4, IORDY flow control,
prefetch control
• Supports dual channels to allow up to four drives or non-disk devices (ATAPI CD-ROM and tape
drives)
• Pipeline pre-fetched reads and posted writes for concurrent disk and host operations
• Independent access timing for all drives (primary/secondary and master/slave)
• All Enhanced IDE new features may be disabled/enabled via driver or power-on setting by per
drive selectability
• ATA/Mode 0-4 PIO speed may be set as default timing of each drive via power-on jumper setting
• Supports slave DMA mode protocol (reserved)
• Supports auto power-down, standby, suspend APM power management state for green PCs
• Primary and secondary channel can be independently enabled/disabled by software or jumper
setting
• Supports drivers for DOS, Windows, OS/2, UNIX, and Netware
• Packaged in 100-pin QFP
Publication Release Date: May 1995
-3-
Revision A1