Avalue ESM-QM57 - Manual (Page 34)

ESM-QM57
34 ESM- QM57 User ’s Manual
2.4.3 Signal Description – COM Express Connector 2 (CN2B)
2.4.3.1 IDE Signals
Signal Signal Description
IDE_D[0:15] Bidirectional data to / from IDE device.
IDE_A[0:2] Address lines to IDE device.
IDE_REQ# IDE Device DMA Request. It is asserted by the IDE device to request a data transfer.
IDE_IOW# I/O writes line to IDE device. Data latched on trailing (rising) edge.
IDE_ACK# IDE Device DMA Acknowledge.
IDE_IRQ Interrupt request from IDE device.
IDE_IORDY IDE device I/O ready input. Pulled low by the IDE device to extend the cycle.
IDE_IOR# I/O read line to IDE device.
IDE_CS1# IDE Device Chip Select for 1F0h to 1FFh range.
IDE_CS3# IDE Device Chip Select for 3F0h to 3FFhrange.
IDE_RESET# Reset output to IDE device, active low.
2.4.3.2 HDMI Signals
Signal Signal Description
SDVO/HDMIB_CTRL_DATA SDVO or HDMI portB Control data
SDVO/HDMIB_CTRL_CLK SDVO or HDMI portB Control clock
HDMIB_HPD Reserved for HDMI portB hot plug detection (add a resistor on R544 to activate)
HDMIC_CTRL_DATA Reserved for HDMI portC Control data (add a resistor on R180 to activate)
HDMIC_CTRL_CLK Reserved for HDMI portC Control clock (add a resistor on R188 to activate)
HDMIC_HPD Reserved for HDMI portC hot plug detection (add a resistor on R545 to activate)