
15
Board Layout
Chapter 3
Embedded and Industrial Computing
Firmware Hub BIOS Chip Select (JFWH1)
NOTE: Jumper 1-2 closed can disable expansion
board BIOS and use this board’s FWH instead.
LCD Backlight Brightness Adjustment Connector
(JVR1)
S3 signal selector (JPWR1)
PCIE2 (DDI) Signal Selector (JHDMI1)
PCIE Signal Selector (JPCIE1)
PCI Express Differential Transmit Pairs:
JPCIE1 PCIE
[0]
PCIE
[1]
PCIE
[2]
PCIE
[3]
PCIE
[4]
PCIE
[5]
PCIE
[6]
S E L = L O W
(short 1-2)
PCIE3 LAN2 PCIE4 MINI-
PCIE1
SEL=HIGH
(short 2-3)
LAN2 PCIE4 MINI-
PCIE1
x X X X
SPI Selector (JSPI1)
Note: Jumper 1-2 closed can disable expansion
board SPI FLASH and use this board’s SPI FLASH
instead.
Carrier Board SPI FLASH Programming (JSPI2)
1 2
Pin No. Signal
1 GND
2 BIOS_DIS0#
Pin No. Signal
1 +5V
2 LVDS_BKLT_CTRL
3 GND
1
3
Pin No. Signal Description
1 PWR_S3 Control by power button
2 S3 Control power IC
3 SLP_S3# Signal between Expansion
board and this board
Pin No. Signal
1 +3.3V
2 DDI_DDC_AUX_SEL
Pin No. Signal
1 GND
2 SEL
3 +3.3V
1 2
Pin No. Signal
1 GND
2 BIOS_DIS1#
1 3 5 7
Pin No. Signal Pin No. Signal
1 +3VSB 2 GND
3 SPI_CS# 4 SPI_CLK
5 SPI_MOSI 6 SPI_MISO
7 SPI_HOLD#
Pin No. Signal
Short 1-2 HDMI/SDVO
DisplayPort
1 2
HDMI/SDVO
Display Port
ATX mode
1 2 3
1 2
1 2 3
1 2 3
AT mode
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