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Chapter 2: Installation
LED1
JCOM1: COM1/COM2
J3: AUDIO FP
BT1
LVDS1
JMP1
JGP1
JF1
JMD1
SRW1
SRW2
JPWR1
JLAN1LED1
JLAN1
JHDMI1
I-SATA1
JUSB1
JUSB2
JLCDPWR1
USB 0/1
USB 2/3
JLPC
A2SAP-L1
REV:1.00
DESIGNED IN USA
General Purpose I/O Header
The JGP1 (General Purpose Input/Output) header is an 8-bit general purpose I/O expander
on a pin header via the SMBus. Refer to the table below for pin definitions. The base address
is 0xF040.
GPIO Header
Pin Definition
Pin#
Definition
Pin#
Definition
1
P3V3SB
2
GND
3
GP_P3V3_GP0
4
GP_P3V3_GP4
5
GP_P3V3_GP1
6
GP_P3V3_GP5
7
GP_P3V3_GP2
8
GP_P3V3_GP6
9
GP_P3V3_GP3
10
GP_P3V3_GP7
1
1. General Purpose
Header