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signal, which is driven, using a LID Switch on the carrier board, to trigger the transition of the module from Working to Sleep status, or vice versa. It can be left
unconnected if not used on the carrier board.
GPE2#: General Purpose Event #2, active low +3.3V_A input with 10KΩ pull-up resistor.
EXTSMI#: System Management Interrupt, active low +3.3V_A input with 10KΩ pull-up resistor.
3.2.5.13
Miscellaneous signals (Connector X4 - CN7)
®
Here following, a list of ETX
compliant signals that complete the features of ETX-A61 module.
SPEAKER: Speaker output, +3.3V_S voltage signal, managed by SOC's embedded counter.
I2CLK, I2DAT: general purpose I2C Bus clock and data line. The I2C interface is managed by the SOC's embedded Serial IO (SIO).
SMBCLK, SMBDATA: SM Bus control clock and control data lines for System Management. Bidirectional signals, electrical level +3.3V_A with 4k7Ω pull-up
resistors. It is managed by the SOC's embedded Platform Control Unit (PCU) System Management Bus 2.0 Host Controller
KBINH#: Keyboard Inhibit, +3.3V_S bidirectional signal with 10KΩ pull-up resistor. This signal on ETX modules could be used to disable data input from the
keyboard. On ETX-A61, however, it is connected to a General Purpose I/O pin.
SERIRQ: LPC Serialised IRQ request, bidirectional line, +3.3V_S electrical level. This signal can be used by peripherals requiring Interrupt support.
ETX-A61
ETX-A61 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.2 - Author: S.B. - Reviewed by G.G. Copyright © 2017 SECO S.r.l.
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