Schematic Examples. IBASE Technology COMe Carrier Board, com express
Below you will find brief information for COM Express Carrier Board Design Guide. This guide provides suggestions on designing IBASE COM-Express products, including carrier boards and systems. It offers schematic examples and routing considerations for various interfaces like PCIe, DisplayPort, LAN, USB, SATA, LVDS, VGA, and more.
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Key features
PCIe interface design guidelines
DisplayPort/HDMI/DVI support
LAN and USB port implementations
SATA and LVDS interface details
VGA interface guidance
Power and reset control information
PCB layout recommendations
Mechanical considerations
Frequently asked questions
COM Express is a highly integrated computer module with integrated CPU, memory, and I/O functions that are mapped to two high-density connectors.
The guide covers PCIe, PEG, digital display interfaces (DisplayPort/HDMI/DVI, SDVO), LAN, USB, SATA, LVDS, eDP, VGA, digital audio interfaces, LPC, SPI, I2C, SMBus, serial interface, CAN, and miscellaneous signals.
Yes, PCIe lanes should be routed with 85Ω differential impedance, traces matched within pairs, and referenced to a continuous GND plane.
Each DisplayPort interface consists of 4 differential lanes, 1 auxiliary lane and 1 hot-plug-detect signal.
Route LVDS signals as differential pairs, with a 100-Ω differential impedance and a 55-Ω, single-ended impedance.