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LPC47M172_07 Datasheet

  • LPC47M172_07

  • SMSC Corporation [Advanced I/O Controller with Motherboard ...

  • SMSC   SMSC

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Advanced I/O Controller with Motherboard GLUE Logic
Datasheet
BIT 3 READ DATA TOGGLE
Every inactive edge of the RDATA input causes this bit to change state.
BIT 4 WRITE DATA TOGGLE
Every inactive edge of the WDATA input causes this bit to change state.
BIT 5 DRIVE SELECT 0
Reflects the status of the Drive Select 0 bit of the DOR (address 3F2 bit 0). This bit is cleared after a
hardware reset and it is unaffected by a software reset.
BIT 6 RESERVED
Always read as a logic 鈥?鈥?
BIT 7 RESERVED
Always read as a logic 鈥?鈥?/div>
PS/2 Model 30 Mode
7
nDRV2
RESET
COND.
BIT 0 nDRIVE SELECT 2
The DS2 disk interface is not supported.
BIT 1 nDRIVE SELECT 3
The DS3 disk interface is not supported.
BIT 2 WRITE GATE
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.
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 4 WRITE DATA
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 5 nDRIVE SELECT 0
Active low status of the DS0 disk interface output.
BIT 6 nDRIVE SELECT 1
Active low status of the DS1 disk interface output.
BIT 7 nDRV2
Active low status of the DRV2 disk interface input. Note: This function is not supported.
N/A
6
nDS1
1
5
nDS0
1
4
WDATA
F/F
0
3
RDATA
F/F
0
2
WGATE
F/F
0
1
nDS3
1
0
nDS2
1
SMSC/Non-SMSC Register Sets (Rev.
01-11-07)
Page 40
SMSC LPC47M172
DATASHEET

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LPC47M172-NW

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