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Chapter 3 Motherboard Connections
GPIO Headers
The JGP1 (General Purpose Input/Output) header is located near the SATA connectors on
the motherboard. The JGP1 header is a general-purpose I/O expander on a pin header from
Intel SoC. See the table below for pin definitions. Refer to the board layout below for the
locations of the headers.
GPIO Header
Pin Definitions
Pin#
Definition
CFIO Name
CFG0
CFG1
1
3V3 STBY
N/A
N/A
N/A
3
GP0
I2C0_SCL
0xFED85428
0xFED8542C
5
GP1
I2C0_SDA
0xFED85408
0xFED8540C
7
GP2
I2C1_SCL
0xFED85418
0xFED8541C
9
GP3
I2C1_SDA
0xFED85400
0xFED85404
2
GND
N/A
N/A
N/A
4
GP4
I2C2_SCL
0xFED85430
0xFED85434
6
GP5
I2C2_SDA
0xFED85410
0xFED85414
8
GP6
I2C3_SCL
0xFED85438
0xFED8543C
10
GP7
I2C3_SDA
0xFED85420
0xFED85424
10
9
1
2
GPIO Header Pin Layout
Note:
The "I2C#_SCL/SDA" are pin names of Intel N3700 SoC GPIO.
Disk-On-Module Power Connector
The Disk-On-Module (DOM) power connector at JSD1 provides 5V power to a solid-state DOM
storage device connected to one of the SATA ports. See the table below for pin definitions.
DOM Power
Pin Definitions
Pin#
Definition
1
5V
2
Ground
3
Ground
DOM Power Pin Layout
1 2 3
Audio Front Panel Header
A 10-pin audio header located on the motherboard allows you to use the onboard sound chip
(ALC888S) for audio function. Connect an audio cable to the this header to use this feature.
See the table below for pin definitions.
Audio Header
Pin Definitions
Pin#
Definition
Pin#
Definition
1
Microphone_Left
2
Audio_Ground
3
Microphone_Right
4
Audio_Detect
5
Line_2_Right
6
Ground
7
Jack_Detect
8
Key
9
Line_2_Left
10
Ground