ADLINK Technology CM1-86DX3, Technical Reference

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Interfaces 27
CM1-86DX3
3.3.4 Reset Switch
An external reset switch provides the reset signal through the Utility interface to a reset circuit,
which drives the Vortex CPU.
3.3.5 Speaker
The speaker signal provides sufficient signal strength to drive a 1W 8
Ω
“Beep” speaker through
the Utility interface at an audible level. The speaker signal is driven from an on-board amplifier
and the Vortex CPU.
Table 3-5 describes the pin signals of the Utility interface, which uses a 10-pin, right-angle
header with 2 rows, odd/even sequence (1, 2), and 0.100" (2.54mm) pitch.
Note : The shaded table cells denote power or ground. The * symbol indicates the signal is Active Low.
3.4 Fast Ethernet Interface
Table 3-6 describes the pin signals of the Fast Ethernet interface, which uses a single-row, 8-pin
header with 0.100" (2.54mm) pitch.
Table 3-5: Utility Interface Pin Signals (CN26)
Pin # Signal Description
1 SPKR Speaker Output
2 GND Ground
3 RST_BTN_IN* External Reset Switch signal
4 MSDATA Mouse Data input
5 KBDATA Keyboard Data input
6 KBCLK Keyboard Clock input
7 GND Ground
8 +VCC UTIL Keyboard /Mouse power (+5V) output
9 VBATV_EX Real time battery voltage (3.6V Type/ 4.0V Max) input
10 MSCLK Mouse Clock input
Table 3-6: Fast Ethernet Interface Pin Signals (CN6)
Pin # Signal Description
1 LAN100_TX_P Analog Twisted Pair Ethernet Transmit Differential Pair – These pins transmit
the serial bit stream through the isolation transformer.
2 LAN100_TX_N
3 LAN100_RX_P Analog Twisted Pair Ethernet Receive Differential Pair – These pins receive
the serial bit stream through the isolation transformer.
6 LAN100_RX_N
4 ETH_PE Connected through two 75 ohm resistors in series to center tap of isolation
transformer and then to ground through common 1k PF capacitor.
5 ETH_PE
7 ETH_PE Connected through two 75 ohm resistors in series to center tap of isolation
transformer and then to ground through common 1k PF capacitor.
8 ETH_PE