Features of COM Express variants
Issue C
11
USB support
• USB 2.0 supporting low/full/high speed modes.
• Two ports connected to PCI Express MiniCard socket.
• Two user accessible ports (Pin header, one client configurable).
• Four ports on board-to-board connector.
Ethernet
• Gigabit Ethernet port supporting 10/100/1000 BaseT.
• Output to board-to-board connector.
Serial ATA
• Two SATA outputs to board-to-board connector.
Serial Ports
• One port used to connect to on-board GPS receiver (build option).
• One port used to connect to on-board Bluetooth module OR nanoZigBee (build
option).
• One port used to connect touch screen controller.
• One port used for general purpose RS232 TX/RX port.
PCI Express
• Two PCIe MiniCard sockets connected to PCIE switch (one with a SIM card slot).
• Four PCIe to COM Express board-to-board connectors (One from chipset, three from
PCIE switch).
SDIO/MMC
• One MicroSD socket.
GPIO
• Eight GPIO on COM express connector.
• Eight GPIO on header
TPM
• Atmel Trusted Platform Module Device, TCG v1.2 compatible.
• SMBUS interface.
COM Express board-to-board connector
• Four PCI Express, LPC, four USB host, SMBus/I2C, HD Audio, one LVDS video
output, Gigabit Ethernet, two SATA, system and control, Power.
GPS receiver (build option)
• 20-channel GPS receiver SirFStar III chipset module.
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