SCH3112I-NE SMSC [SMSC Corporation], SCH3112I-NE Datasheet - Page 155

• Manufacturer Part Number: SCH3112I-NE
• Description: LPC IO with 8042 KBC, Reset Generation, HWM and Multiple Serial Ports
• Manufacturer: SMSC [SMSC Corporation]

LPC IO with 8042 KBC, Reset Generation, HWM and Multiple Serial Ports
Datasheet
Chapter 13 General Purpose I/O (GPIO)
SMSC SCH311X
13.1
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
85
86
96
95
87
92
89
88
37
38
36
110
97
39
40
PIN #
The SCH311X provides a set of flexible Input/Output control functions to the system designer through
the 40 independently programmable General Purpose I/O pins (GPIO). The GPIO pins can perform
basic I/O and many of them can be individually enabled to generate an SMI and a PME.
The following pins include GPIO functionality. These pins are defined in the table below. All GPIOs
default to the GPIO function except on indicated by
GPIO Pins
GP10
GP10 / RXD3
GP11
GP11 / TXD3
GP12
GP12 / nDCD3
GP13
GP13 / nRI3
GP14
GP14 / nDSR3
GP15
GP15 / nDTR3
GP16
GP16 / nCTS3
GP17
GP17 / nRTS3
KDAT/GP21
KCLK/GP22
GP27/nIO_SMI /P17
nFPRST / GP30
GP31
GP31 / nRI4
MDAT/GP32
MCLK/GP33
ALTERNATE FUNCS)
(DEFAULT FUNC/
PIN NAME
GPIO PIN
Table 13.1 GPIO Pin Functionality
DATASHEET
VCC
VTR
VTR
VTR
VTR
VCC
VCC
VCC
VTR
VTR
VCC
VCC
VCC
VCC
VCC
PWRWELL
GPIO
139
Note
0x01
0x01
0x01
0x01
0x01
0x01
0x01
0x01
0x8C
0x8C
0x01
0x05
0x01
0x84
0x84
POR
VTR
13.3.
PME
SMI/PME
SMI/PME
nIO_SMI/PM
E
PME
SMI/PME
SMI/PME
SMI/PME
13.3
13.3
13.3
13.3,
13.4
13.3
13.3
13.3
13.3
13.1,
13.1,
13.1
13.3
13.3,
13.4
13.1
13.3
13.1
13.3
Rev 0.2 (09-28-04)
13.3
13.3
NOTE