DESCRIPTION OF MULTIFUNCTION PINS
PIN
ORIGINAL
ALTERNATE
FUNCTION 1
IR MODE
IRQ4
ALTERNATE
FUNCTION 2
IRRX3
NO./QFP FUNCTION
DEFAULT
DRVDEN1
PCICLK
SERIRQ
nDACK3
DRQ3
nRI2
nDCD2
RXD2
NOTE
DRVDEN1
PCICLK
SERIRQ
nDACK3
DRQ3
nRI2
nDCD2
RXD2
1
2
2
3
3
4
4
5
5
6
6
6
6
2
32
33
51
52
92
94
95
IRQ3
8042 P16
8042 P12
8042 P16
8042 P12
IRRX
IRQ12
IRQ11
TXD2
IRTX
TXD2
96
nDSR2
nRTS2
nCTS2
nDTR2
SA15
SA12
SA13
SA14
IRQ10
IRQ5
IRQ6
IRQ7
nDSR2
nRTS2
nCTS2
nDTR2
97
98
99
100
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
Controlled by IRMODSEL(LD8:CRC0.0) and IRRX3SEL(LD8:CRC0.4)
Controlled by SERIRQSEL(LD8:CRC0.2)
Controlled by DMA3SEL(LD8:CRC0.1)
Controlled by 8042COMSEL(LD8:CRC0.3) and SERIRQSEL(LD8:CRC0.2)
Controlled by IR Option Register( LD5:CRF1.6)
Controlled by 16 bit Address Qual.(CR24.6) and SERIRQSEL(LD8:CRC0.2)
For more information, refer to tables 65 through 75.
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SMSC [ SMSC CORPORATION ]
