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