Compaq SMA200 user manual COM-EXPRESS Connector Description, Signal Terminology Descriptions

DIGITAL-LOGIC AG SMA200 Manual V1.0

4.COM-EXPRESS CONNECTOR DESCRIPTION

4.1.Signal Terminology Descriptions

Signal	Description
PU	Internally implemented pull up resistor
PD	Internally implemented pull down resistor
I/O 3.3V	Bi-directional signal 3.3V tolerant
I/O 5V	Bi-directional signal 5V tolerant
I 3V	Input 3.3V tolerant
I 5V	Input 5V tolerant
I/O 3.3VSB	Input 3.3V tolerant, active in standby state
O 3V	Output 3.3V signal level
O 5V	Output 5V signal level
P	Power input/output
D	Differential signal pair
DDC	Display data channel
PCIE	In compliance with PCI Express Base Specification, Revision 1.0a
SATA	In compliance with Serial ATA Specification, Revision 1.0a
LVDS	Low voltage differential signal: 350mV nominal; 450mV maximum differential signal
LAN	100/10Mbit/s LAN signals coming from the PHY
TPM	Trusted platform module
GE-LAN	1GB LAN signals

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