FDC37M600 SMSC [SMSC Corporation], FDC37M600 Datasheet - Page 142
![no-image](/images/no-image-200.jpg)
FDC37M600
Manufacturer Part Number
FDC37M600
Description
ENHANCED SUPER I/O CONTROLLER WITH INFRARED SUPPORT
Manufacturer
SMSC [SMSC Corporation]
Datasheet
1.FDC37M600.pdf
(182 pages)
- Current page: 142 of 182
- Download datasheet (643Kb)
Default = 0x00
on VTR POR
Pin Multiplex
Controls
Default = 0x06 on
Vcc POR
Force Disk Change
Default = 0x03 on
Vcc POR
KRST_GA20
Default = 0x00
on Vcc POR or
Reset_Drv
NAME
NAME
Table 64 - Auxilliary I/O, Logical Device 8 [Logical Device Number = 0x08]
Table 63 - KYBD, Logical Device 7 [Logical Device Number = 0x07]
0xF1 -
0xFF
REG INDEX
0xB8 R/W
INDEX
(R/W)
0xF0
0xC0
0xC1
R/W
REG
KRESET and GateA20 Select
Bit[7] Polarity Select for P12
Bits[6:3] Reserved
Bit[2] Port 92 Select
Bit[1] Reserved
Bit[0] Reserved
Reserved - read as ‘0’
Bits[7:0] Reserved
Bit[0] IR Mode Select
Bit[1] DMA 3 Select
Bit[2] Reserved, read as “1”
Bit[3] 8042 Select
Bit[4] Reserved
Bit[5:7] Reserved
Bit[0] Force Change 0
Bit[1] Force Change 1
Bit[7:2] Reserved
Force Change[1:0] can be written to 1 but are not
clearable by software.
Force Change 1 is cleared on nSTEP and nDS1
Force Change 0 is cleared on nSTEP and nDS0
DSKCHG (FDC DIR Register, Bit 7) = (nDS0 AND
Force Change 0) OR (nDS1 AND Force Change 1)
OR nDSKCHG
= 0 P12 active low (default)
= 1 P12 active high
= 0 Port 92 Disabled
= 1 Port 92 Enabled
142
DEFINITION
DEFINITION
STATE
STATE
C,R
C
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