3301770
Audio Interface
Audio Connector
AC’97 Audio signals are interfaced through a 10-pin flat-cable connector. These signals include
Microphone line-in, line-in stereo, and line-out stereo. An audio 10-pin-to-phone-jack adapter kit is
required.
COM Port Connectors [COM1(CN22), COM2(CN16)]
The 3301770 provides two serial ports (COM1: RS-232; COM2: RS-232/422/485) interfaced
through one DB-9 connector (COM1) and one 14-pin male header. These serial ports facilitate the
connection to serial devices or a communication network, e.g., terminal console.
LCD Panel Connection (CN26, CN28, and CN29)
The PCI SVGA interface on the 3301770 connects conventional CRT displays and flat panel
displays including passive LCD and active LCD displays. There are three (3) connectors
onboard for the connection to the three (3) display types:
1. CRT VGA monitors
2. TFT flat panel displays
3. LVDS type LCD panels
One CRT display connector (CN26) is provided as a 15-pin, female D-SUB to connect
conventional CRT displays. Pin assignments can be found in Chapter 2 Functional
Description.
Flat Panel Display Connector (CN28):
CN28 is a 40-pin connector, Hirose DF13A-40DP-1.25V, which can support a 24-bit LCD panel.
A bias control signal, ENVEE, active high on CN28, controls the LCD bias voltage. The LCD bias
voltage shall not be applied until the +5V or +3.3V logical supply and panel video signals become
stable. When powered on, the control signal remains low until receiving the flat panel signals.
CN28 connects up to 24-bit TFT LCD.
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