W83759A Datasheet, PDF (25/41 Pages) Winbond – ADVANCED VL-IDE DISK CONTROLLER

W83759A
CRX8Eh (SD1TIM0) Read/Write Secondary Drive 1 Timing Control 0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
SD1ACT3 SD1ACT2 SD1ACT1 SD1ACT0 SD1RCV3 SD1RCV2 SD1RCV1 SD1RCV0
Bit 7−Bit 4
Bit 3−Bit 0
SD1ACT3−0
SD1RCV3−0
SD1 Data Register Port (170h) Read/Write Active Time
Definition of these bits same as PD0RCV3-0
SD1 Data Register Port (170h) Read/Write Recovery Time
Definition of these bits same as PD0RCV3-0
CRX8Fh (SD1TIM1) Read/Write Secondary Drive 1 Timing Control 1
Bit 7
SD1AST1
Bit 6
SD1AST0
Bit 5
SD1DHT1
Bit 4
SD1DHT0
Bit 3
SD1PRE
Bit 2
SD1DMA
Bit 1
SD1RDY
Bit 0
SD1ADV
Bit 7−Bit 6
Bit 5−Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
SD1AST1−0
SD1DHT1−0
SD1PRE
SD1DMA
SD1RDY
SD1ADV
SD1 Data Register Port (170h) Address Setup Time
Definition of these bits same as PD0RCV3−0
SD1 Data Register Port (170h) Data Hold Time
Definition of these bits same as PD0RCV3−0
SD1 Prefetch/Post write control
0
Prefetch/Post write enabled
1
Prefetch/Post write disabled
SD1 DMA mode control
0
DMA mode enabled
1
DMA mode disabled
SD1 Data Register Port (170h) IOCHRDY Control
0
IOCHRDY enabled
1
OCHRDY disabled
SD1 Data Register Port (170h) Advanced Timing Enable
0
Normal timing (depends on SP1, MD1, MD0
setting)
1
Advanced timing (depends on SD1TIM1−0 setting)
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Publication Release Date: May 1995
Revision A1