Hercules-EBX CPU User Manual V1.02
Page 16
Speaker
The signal on this pin is referenced to +5V Out. Connect a speaker
between this pin and +5V Out.
IR Receive / Transmit These pins are used for IrDA functions. They should be connected to
an external IrDA transceiver, when needed. IR communications require
that COM PORT 2 be set for “IR” mode for the IR serial port functionality
to be active.
External Battery
This pin is an additional power connection for an ex3V power
source (in addition to connector J20). Note that these two sources are
not directly connected and may both be driven by separate external
battery power sources. Typical power draw from this battery source will
average under 4uA of current.
Watchdog Input/Output These signals are signals are used in conjunction with the on-board
FPGA and Data Acquisition circuitry to provide full watchdog timer
functionality. See page 42 for details on these capabilities.
Connector Part Numbers
J7 plug on CPU board:
PHYCO
2120-20S
Both cable-mount and board-mount connectors are available to mate with J7:
Cable-mount socket:
Phyco 1100-10
Board-mount socket:
Samtec
SSM-112-S-DV-A or
Oupiin
2043-2X12TDP