Publication No. SBC330-0HH/3
Connectors and Cables 83
9.2.9 P2 connector signal definitions
Table 9-9 P2/J2 Signal Definitions
Signal
Direction
Description
COMn_232CTS
I/O
RS232 Clear To Send - hardware flow control COMn
COMn_232RTS
I/O
RS232 Ready To Send - hardware flow control COMn
GPIO(0..7)
I/O
These 3.3V digital lines can be Software controlled to be inputs or outputs. As
inputs they may be used to generate an input. They are protected from over-
voltage and over-current by in-line FET Quick Switch devices
NC
Connector pin is not connected to any signal
NOT USED
Backplane signal is not used by SBC330
P2_EXT_INT_ROOT_CO
MP_1
Input
Factory functional test use only
PCIEn_RXnN/P
Input
8-lane PCI-Express link B/2, lane x Receive data differential pair
PCIEn_TXnN/P
Output
8-lane PCI-Express link B/2, lane x transmit data differential pair
PS2_5V
Output
SBC330 provides fused 5V power to Keyboard and Mouse devices.
The fuse prevents the SBC330 against any harmfully high user generated
voltages
SATAn_RX_N/P
Input
Serial ATA channel n receive data differential pair
SATAn_TX_N/P
Output
Serial ATA channel n transmit data differential pair
SEQ IN
Input
Power Sequencing Input. Pulled up to P3V3_AUX via 10K resistor.
Connected to 1014A PWR Manager.
Driving this signal low can prevent the SBC330 from powering its main
supplies to allow control of in-rush current in a system. The Software and
Firmware must be set up to notice this input
SEQ OUT
Output
Power Sequencing Output. Tied high via 10K resistor. The 1014A Power
manager can drive this signal low to prevent other boards in the system
powering if required to reduce system in-rush currents
USBn_N/P
I/O
Differential signal pairs for USB channel n