W83759A Datasheet, PDF (15/41 Pages) Winbond – ADVANCED VL-IDE DISK CONTROLLER

W83759A
Continued
Bit 3, 2
Bit 1
Bit 0
DSL1, 0
CRLK
CRSL
Power-on setting value of IDD3, IDD2 pin
Initial Device ID selection (used in multi-chip mode or
CR protection scheme)
DSL1
DSL0
Device ID
0
0
60h
0
1
61h
1
0
62h
1
1
63h
Power-on setting value of IDD1 pin
Initial Configuration Register locked control
0 CR is auto-locked (used in multi-chip mode)
1 CR is not auto-locked (used in single-chip mode)
Power-on setting value of IDD0 pin
Initial Configuration Register selection
0 CR port address: 130h, 134h, 138h, 13Ch
1 CR portaddress: 1B0h, 1B4h, 1B8h, 1BCh
CRX83h (POSP2)
Read / Write
Power-on Setting Programming 2
Bit 7
PD0LEN_
P
Bit 6
PD1LEN_
P
Bit 5
Bit 4
Bit 3
Bit 2
SD0LEN_P SD1LEN_P DSL1_P DSL0_P
Bit 1
CRLK _P
Bit 0
CRSL_P
After power-on, the content of the POSP2 register is equal to that of the POSS2 register. The host
can program POSP2 to modify the power-on settings.
Bit 7
PD0LEN_P
Primary Drive 0 (PD0) local device control
0
Disable local device
1
Enable local device
Bit 6
PD1LEN_P
Primary Drive 1 (PD1) local device control
0
Disable local device
1
Enable local device
Bit 5
SD0LEN_P
Secondary Drive 0 (SD0) local device control
0
Disable local device
1
Enable local device
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Publication Release Date: May 1995
Revision A1