2.9 Power connectors (CN15, CN18)
2.9.1 Main power connector (CN15)
The power connection is a 8-pin connector requiring +5 V and +12 V power. It needs a cable (1703080104 for AT or 1703200380 for ATX) to connect AT/ATX power supply.
2.9.2ATX standby power input connector (CN18)
The power connection is a 3-pin connector requiring +5 V standby
2.10Serial (COM1,COM2) (CN13,CN16)
The PCM-3370 has a total of two on-board RS-232 serial ports, COM1 and COM2. They are COM1(RS-232) and COM2 (RS-232/422/485). Both serial ports have +5 V power capabilities on both pin #1.
2.10.1Primary(COM1:CN20/CN21,COM2:CN14/CN16)
Each primary serial port has internal 10-pin header giving the user the ability to adapt the board to many different systems. IRQ for COM1 and COM2 is fixed with COM1 on IRQ4 and COM2 on IRQ3. COM1 and COM2 can be enabled or disabled via BIOS (see Chapter 4).
2.11COM2 422/485 (CN6)
There is a 4-pin boxheader connector for COM2 RS-422/485 connection purpose.
2.12 VGA interface connections
The PCM-3370 's AGP 4X interface can drive conventional CRT displays and is capable of driving a wide range of flat panel displays, including electroluminescent (EL), gas plasma, passive LCD and active LCD dis- plays. The board has two connectors to support these displays, one for standard CRT VGA monitors and one for flat panel displays.
2.12.1 CRT display connector (CN8)
CN8 is a standard 16-pin (2x8) box header connector commonly used for the CRT VGA monitor only. Pin assignments appear in the appendix.
2.12.2 Flat panel display connector (CN7,CN20)
