ADLINK Express-IBR - Manual (Page 37)

Chapter 3 Hardware
Express-IBR Reference Manual 31
COM Express C-D Connector
The COM Express C-D connector is a 220-pin connector providing the following features:
• Digital Display Interface (DDI)
• PCI Express
• PCI Express Graphics (PEG) interface
• SDVO functionality
• USB 3.0
Digital Display Interface (DDI)
The Digital Display Interface resides in the PCH and is divided into three digital ports (B, C, D). Each of
these digital ports can be configured natively to drive HDMI and DisplayPort signals. Digital Port B can also
be configured to drive SDVO signals.
PCI Express
™
The Express-IBR offers six (6) PCI Express x1 lanes (lanes 1-6) through the COM Express A-B connector
and one PCI Express x1 lane (lane 7) through the C-D connector. These lanes can be configured to support
PCI Express edge cards or ExpressCards. Each x1 lane supports up to 5 GT/s bandwidth in each direction.
Lanes 1-4 can be configured through the BIOS setup utility as four x1s or one x4 lane widths. Lanes 5-7 can
be independently enabled or disabled through the BIOS setup utility. The eighth x1 lane (lane 8) is utilized
by the on-board Gigabit Ethernet transceiver and is not available as a PCIe lane. The PCI Express interface
is based on the PCI Express Specification 2.0. The C-D connector also provides one PCIe x16 interface for a
PCIe graphics (PEG) card or other PCIe expansion cards and can be configured using the on-board
configuration switch (SW1).
PCI Express Graphics (PEG)
The Express-IBR supports the implementation of a PCIe x16 interface for an external high-performance PCI
Express Graphics card or other general purpose PCI Express devices. It supports a theoretical bandwidth of
up to 8GT/s and complies with the PCIe Gen3 standard. Each lane of the PEG interface consists of a receive
and transmit differential signal pair designated from PEG_RX0 (+ and -) to PEG_RX15 (+ and -) and
correspondingly from PEG_TX0 (+ and -) to PEG_TX15 (+ and -).
A100 GND B100 GND
A101 SER1_TX (Not Connected) B101 FAN_PWMOUT
A102 SER1_RX (Not Connected) B102 FAN_TACHIN (PU 47k 3.3V)
A103 LID# (PU 1k 3.3V) B103 SLEEP# (PU 10k 3.3V Standby)
A104 VCC_12V B104 VCC_12V
A105 VCC_12V B105 VCC_12V
A106 VCC_12V B106 VCC_12V
A107 VCC_12V B107 VCC_12V
A108 VCC_12V B108 VCC_12V
A109 VCC_12V B109 VCC_12V
A110 GND B110 GND
Table 3-5. COM Express A-B Connector Signal Descriptions (CN6) (Continued)