
CompuLab Ltd. FACE Modules – HW Specifications Page 12 of 63
1.3.2 Connectors Pinout
The tables below provide complete pinout of extension connectors EXT1, EXT2 and signals mapping.
Table 3 – EXT1 connector HOST side pinout
EXT-1 connector HOST side
SATA2.0 differential transmit pair 2; Host
signal shared with mini PCIe (MUX channel B)
Host PEG CLK output differential pair -
100MHz PCIe Gen2 to PCIe Graphics
device
1
SATA activity LED indicator
SATA2.0 differential receive pair 2; Host signal
shared with mini PCIe (MUX channel B)
3
Host PCIe CLK output differential pair -
100MHz PCIe Gen2 to PCIe devices
1
SATA2.0 differential transmit pair 3
3
SATA3.0 differential receive pair 1
2
SMBus Alert used to wake the system
SATA2.0 differential receive pair 3
3
SATA3.0 differential transmit pair 1
2
SMBus host clock output. Connect to SMBus
slave.
SMBus bidirectional data. Connect to SMBus
slave.
High Definition Audio host reset
USB Overcurrent Indicator for lanes 2/3
High Definition Audio host sync
High Definition Audio host bit clock out
24MHz
High Definition Audio serial host data out
High Definition Audio serial host data in1
For internal test purposes
High Definition Audio serial host data in0
For internal test purposes
Single Ended 33MHz CLK host out to PCI
devices
USB Host interface lane 0
LPC interface frame signal
USB Overcurrent Indicator for lanes 0/1
SPI interface MISO signal –
Reserved for internal use only
SPI interface MOSI signal –
Reserved for internal use only
SPI interface Clock signal –
Reserved for internal use only
SPI interface chip select 1 –
Reserved for internal use only
LPC bus multiplexed command, address and
data. Internal PU provided on LPC[3:0]
SPI interface chip select 0 –
Reserved for internal use only
Active Low Platform Reset driven by the
Host
Host PCIe CLK output differential pair -
100MHz PCIe Gen2 to PCIe devices
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