PS/2 Model 30 Mode
7
6
5
4
3
2
1
0
nDRV2 nDS1
nDS0 WDATA RDATA WGATE nDS3
nDS2
F/F
F/F
F/F
RESET
COND.
N/A
1
1
0
0
0
1
1
BIT 0 nDRIVE SELECT 2
BIT 4 WRITE DATA
Active low status of the DS2 disk interface output.
Active high status of the latched WDATA output signal.
This bit is latched by the inactive going edge of WDATA
and is cleared by the read of the DIR register. This bit is
not gated with WGATE.
BIT 1 nDRIVE SELECT 3
Active low status of the DS3 disk interface output.
BIT 2 WRITE GATE
BIT 5 nDRIVE SELECT 0
Active high status of the latched WGATE output signal.
This bit is latched by the active going edge of WGATE
and is cleared by the read of the DIR register.
Active low status of the DS0 disk interface output.
BIT 6 nDRIVE SELECT 1
Active low status of the DS1 disk interface output.
BIT 3 READ DATA
Active high status of the latched RDATA output signal.
This bit is latched by the inactive going edge of RDATA
and is cleared by the read of the DIR register.
BIT 7 nDRV2
Active low status of the DRV2 disk interface input.
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SMSC [ SMSC CORPORATION ]
