TABLE 1 - DESCRIPTION OF MULTIFUNCTION PINS WITH GPI/O AND OTHER ALTERNATE
FUNCTIONS
Buffer
Index
Pin
Original
Alternate
Alternate
Alternate
Register
No.
Function Function 1 Function 2 Function 3
Type
Default
GPI/O
19
MEDIA_
GPI/O
IR Mode
IRR3
I/O8
float
GP4
GP40
ID1
20
23
24
25
26
30
31
33
MEDIA_
ID0
nIDE1_
OE
nHDCS0
nHDCS1
IDE1_IR
Q
nIOROP
nIOWOP
nPOWER
-ON
GPI/O
GPI/O
GPI/O
GPI/O
GPI/O
GPI/O
GPI/O
GPI/O
-
-
-
-
-
Power LED
Output
nSMI
-
-
-
-
-
-
WDT
-
-
I/O8
I/O4
I/O24
I/O24
I/O8
I/O24
I/O24
I/O24
float
high
high
high
float
float
float
active low
open
collector
output
input
RD0
1,4
RD1
1,4
GP4
GP4
GP4
GP4
GP4
GP4
GP4
GP5
GP41
GP42
GP43
GP44
GP45
GP46
GP47
GP51
34
111
112
113
114
115
116
117
118
119
120
153
154
BUTTON
_ IN
RD0
RD1
RD2
RD3
RD4
RD5
RD6
RD7
nROMCS
nROMOE
nRI2
nDCD2
GPI/O
GPI/O
GPI/O
GPI/O
GPI/O
GPI/O
GPI/O
GPI/O
GPI/O
GPI/O
GPI/O
GPI/O
GPI/O
-
Power LED
Output
WDT
8042 - P12
8042 - P13
8042 - P14
8042 - P15
8042 - P16
8042 - P17
-
IR Mode
-
-
-
-
-
-
-
-
-
-
-
-
IRR3
-
-
I/O24
I/O4
I/O4
I/O4
I/O4
I/O4
I/O4
I/O4
I/O4
I/O8
I/O8
I/O8
I/O8
GP5
GP6
GP6
GP6
GP6
GP6
GP6
GP6
GP6
GP5
GP5
GP7
GP7
GP50
GP60
GP61
GP62
GP63
GP64
GP65
GP66
GP67
GP53
GP54
GP70
GP71
RD2
1,4
RD3
1,4
RD4
1,4
RD5
1,4
RD6
1,4
RD7
1,4
nROMCS
1
nROMOE
1
input
input
2
2
9
SMSC [ SMSC CORPORATION ]
