DESCRIPTION OF PIN FUNCTIONS
TABLE 1 - DESCRIPTION OF PIN FUNCTIONS
PIN
No./QFP
44-47,
49-52
23-38
43
64
53
40
39
55
57
59
54
56
58
61
60
63
41
42
22
66
68
18
62, 93,
121
7, 48,
74, 104
67
69
65
19
20
21
16
11
10
System Data Bus
NAME
TOTAL
SYMBOL
PROCESSOR/HOST INTERFACE (40)
8
SD[0:7]
16
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
CLOCKS (4)
14.318MHz Clock Input
32.768kHz Crystal Input
32.768kHz Crystal Driver
32.768kHz Clock Out
POWER PINS (10)
+5V Supply Voltage
Digital Ground
Analog Ground
Trickle Supply Voltage
Battery Voltage
3
4
VCC
VSS
AVSS
VTR
VBAT
nPOWERON
BUTTON_IN
nPME
nRDATA
nWGATE
nWDATA
OD24
I
O12
IS
O24
O24
1
1
1
1
CLOCKI
XTAL1
XTAL2
CLK32OUT
ICLK
ICLK
OCLK2
O8
SA[0:15]
AEN
IOCHRDY
RESET_DRV
SER_IRQ
PCI_CLK
DRQ0
DRQ1
DRQ2
nDACK0
nDACK1
nDACK2
DRQ3
nDACK3
TC
nIOR
nIOW
BUFFER TYPE
IO12
I
I
OD12
IS
IO12
IO12
O12
O12
O12
I
I
I
O12
I
I
I
I
16-bit System Address Bus
Address Enable
I/O Channel Ready
ISA Reset Drive
Serial IRQ/IRQ15
PCI Clock/IRQ14/GP50
DMA Request 0
DMA Request 1
DMA Request 2
DMA Acknowledge 0
DMA Acknowledge 1
DMA Acknowledge 2
DMA Request 3
DMA Acknowledge 3
Terminal Count
I/O Read
I/O Write
1
1
1
POWER MANAGEMENT (3)
Power On
1
Button In
1
Power Management Event/SCI/IRQ9
1
FDD INTERFACE (16)
Read Disk Data
1
Write Gate
1
Write Disk Data
1
7
SMSC [ SMSC CORPORATION ]
