User Guide • SC4-CONCERTO • CompactPCI
®
Serial CPU Board
GPIO Usage CM238 PCH
GPIO
USAGE
DIR
Function
Description
Group F (GPP_F)
F0
Native
IN
SATA#PCIE34
Shorted to GPP_E2
F1-F9
GPIO
IN
N/A
Not connected on SC4
F10
Native
OUT
SGPIO_CLOCK
CompactPCI
Serial GPIO Bus CLOCK (P1 J3: SATA_SCL)
F11
Native
OUT
SGPIO_LOAD
CompactPCI
Serial GPIO Bus LOAD (P1 K3: SATA_SL)
F12
GPIO
IN
SGPIO_IN
CompactPCI
Serial GPIO Bus DATAIN (P1 G3: SATA_SDI)
F13
Native
OUT
SGPIO_OUT
CompactPCI
Serial GPIO Bus DATAOUT (P1 H3: SATA_SDO)
F14-
F23
GPIO
IN
N/A
Not connected on SC4
Group G (GPP_G)
G0-
G18
GPIO
IN
N/A
Not connected on SC4
G19
Native
IN
SMI#
Connected to P-EXP SMI# Signal (Pin 15)
G20-
G23
GPIO
IN
BOARD_CFG
Board Configuration Jumpers BOARD_CFG[0:3]
Group H (GPP_H)
H0
Native
IN
PCIE_CLK_REQ6#
CompactPCI
®
Clock Request Slot 6 (P5 D6: 6_PE_CLKE#)
H1
Native
IN
PCIE_CLK_REQ7#
CompactPCI
®
Clock Request Slot 7 (P5 G6: 7_PE_CLKE#)
H2
Native
IN
PCIE_CLK_REQ8#
CompactPCI
®
Clock Request Slot 8 (P5 J6: 8_PE_CLKE#)
H3
Native
IN
PCIE_CLK_REQ9#
Ethernet Controller NC1 Clock Request
H4-
H11
GPIO
IN
N/A
Not connected on SC4
H12
GPIO
OUT
N/A
Not connected on SC4
H13-
H23
GPIO
IN
N/A
Not connected on SC4
Group I (GPP_I)
I0
Native
IN
DDPB_HPD1
DisplayPort Front Panel Upper Port Hot Plug Detect
I1
Native
IN
DDPB_HPD2
DisplayPort Front Panel Lower Port Hot Plug Detect
I2
Native
IN
DDPB_HPD3
DisplayPort P-HSE2 Port Hot Plug Detect
I3
GPIO
IN
N/A
Not connected on SC4
I4
GPIO
IN
N/A
Not used on SC4 (pulled via resistor to GND)
I5
Native
OUT
DDPB_CTRLCLK
DisplayPort Front Panel Upper Port DDC_CLK
I6
Native
I/O
DDPB_CTRLDTA
DisplayPort Front Panel Upper Port DDC_DATA
I7
Native
OUT
DDPC_CTRLCLK
DisplayPort Front Panel Lower Port DDC_CLK
I8
Native
I/O
DDPC_CTRLDTA
DisplayPort Front Panel Lower Port DDC_DATA
I9
Native
OUT
DDPD_CTRLCLK
DisplayPort P-HSE2 Port DDC_CLK
I10
Native
I/O
DDPD_CTRLDTA
DisplayPort P-HSE2 Port DDC_DATA
Deep Sleep Well Group (GDP)
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