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Signal Descriptions and Pinout Tables
The following section describes the signals found on COM Express™ Type 6 connectors used for congatec GmbH modules. The pinout of the
modules complies with COM Express Type 6, rev. 3.0.
The table below describes the terminology used in this section. The PU/PD column indicates if a pull-up or pull-down resistor has been used.
If the field entry area in this column for the signal is empty, then no pull-up or pull-down resistor has been implemented by congatec.
The “#” symbol at the end of the signal name indicates that the active or asserted state occurs when the signal is at a low voltage level. When
“#” is not present, the signal is asserted when at a high voltage level.
Table 12 Signal Tables Terminology Descriptions
Term
Description
PU
Implemented pull-up resistor
PD
Implemented pull-down resistor
I/O 3.3V
Bi-directional signal 3.3 V tolerant
I/O 5V
Bi-directional signal 5 V tolerant
I 3.3V
Input 3.3 V tolerant
I 5V
Input 5 V tolerant
I/O 3.3VSB
Input or output 3.3 V tolerant active in standby state
O 3.3V
Output 3.3 V signal level
O 5V
Output 5 V signal level
OD
Open drain output
P
Power input/output
DDC
Display Data Channel
PCIe
PCI Express compatible differential signal
DP
DisplayPort compatible differential signal
PEG
PCI Express Graphics
SATA
In compliance with Serial ATA specification revision 2.6 and 3.0
LVDS
Low Voltage Differential Signal - 330 mV nominal,; 450 mV maximum differential signal
REF
Reference voltage output. May be sourced from a module power plane
PDS
Pull-down strap. A module output pin that is either tied to GND or is not connected. Used to signal
module capabilities (pinout type) to the carrier board