Understanding the com functionality, 3 understanding the com functionality – Kontron COMe-cTH6 User Manual
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COMe-cTH6 User’s Guide
www.kontron.com
2.3 Understanding the COM Functionality
All Kontron COM Express® modules contain two COM Express connectors (X1A and X1B), each with two rows. The
primary connector rows are Row A and Row B (connector X1A). The secondary connector rows are Row C and Row D
(connector X1B). The COMe-cTH6 module uses the PICMG COM Express® pin-out Type 6 definition, which is a recent
addition to the PICMG COM Express standard and documented in Revision 2.0 of the PICMG specification. The Type 6
pin-out is based on Type 2 and also supports new features on the secondary connector. The key changes are:
»
The PCI interface is no longer supported and the pins are used instead for digital display interfaces (DDI) and two
additional PCI Express lanes
»
The IDE (PATA) parallel interface is no longer supported and the pins are used instead for additional transmit and
receive pairs for four USB 3.0 ports.
»
Three dedicated DDI ports have been added. Ports 1, 2, and 3 can be configured individually for Display Port (DP),
HDMI, or DVI and port 1 can also be used for SDV0.
»
Two optional two-wire RS232 serial ports have been added using pins formerly assigned to 12V signals.
The primary connector (Row A and Row B) on the COMe-cTH6 module features the following functionality:
»
Analog VGA graphics
»
Gigabit Ethernet LAN
»
Serial ATA (SATA)
»
PCI Express*
»
USB 2.0 and USB 3.0
»
Express card
»
Wake
»
Speaker
»
Intel® High Definition Audio (HDA)
»
LPC (Low Pin Count) bus
»
TTL serial
»
Watchdog timer (WDT)
»
GPIO
»
I
2
C
»
Power button
»
SPI (Serial Peripheral Interface) Bus
The secondary connector (Row C and Row D) supports the following buses and I/O:
»
PEG x16 (the COMe-cTH6 is limited to 8 lanes, either the upper 8 or lower 8)
»
PCI Express
»
DDI
»
DP/DVI/HDMI
»
LVDS 18/24-bit single/dual channel
NOTE: For full descriptions of the COM Express Type 6 pin-outs, refer to the PICMG documentation.
DRAFT COPY FOR REVIEW ONLY
DRAFT COPY FOR REVIEW ONLY