ADLINK Technology CM1-86DX3, Техническое описание

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30 Interfaces
3.8 VGA DDC (Display Data Channel)
The VGA DDC interface provides digital communication of display modes between the display
and a graphics adapter for plug-and-play performance, enabling the computer host to adjust
monitor parameters such as brightness and contrast.
Table 3-10 describes the signals for the VGA DDC interface, which provides a single row, 3-pin
header with 0.049" (1.25mm) pitch.
3.9 Power Interface
The CM1-86DX3 requires one +5 volt DC power source. If the +5VDC power drops below
~4.65V, a low voltage reset is triggered, resetting the system.
The power input header (CN24) supplies the following voltages and ground directly to the mod-
ule:
X 5.0VDC +/- 5% @ 1.35 Amps
Table 3-11 describes the pin signals of the Power 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.
3.10 Battery Interface
Table 3-12 lists the pin signals of the External Battery Input header for backup RTC (Real Time
Clock), which uses 2 pins with 0.049" (1.25mm) pitch.
Note : The shaded table cells denote power or ground. The RTC has an expected current draw of ~5
μ
A at room
temperature (25°C).
A 3-volt model (CR1225) battery is recommended.
The battery is used only when
power is not applied to the board.
Table 3-10: VGA DDC Signals (CN1702)
Pin # Signal Description
1 VGA_DDC_CLK Display Data Channel clock
2 NC Not Connected
5 VGA_DDC_DAT Display Data Channel data
Table 3-11: Power Interface Pin Signal (CN24)
Pin Signal Descriptions
1 +5V +5 Volts
2 GND Ground
3 +5V +5 Volts
4 GND Ground
5 NC Not Connected
6 GND Ground
7 +12V +12 volts routed to PC/104
8 GND Ground
9 +5V +5 Volts
10 GND Ground
Table 3-12: External Battery Input Header (CN25)
Pin # Signal Description
1 VBAT_EXT +3.0 volts DC
2 GND Ground