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B Appendix Pin Assignments B.1 CRT (VGA) Connector The pin assignment of the VGA connector is as follows: No PIN ASSIGEMENT(by: sort) DESCRIPTION Red this DAC analog output drives the CRT 1 RED Video_5 :O (analog) interface. GREEN Video_5 :O Green this DAC analog output drives the CRT 2 (analog) interface. BLUE Video_5 :O Blue this DAC analog output drives the CRT 3 (analog) interface. 4 Monitor ID Bit 2 : Option 5 GROUND : Ground 6 RED Return (ground) : Ground 7 GREEN Return (ground) : Ground 8 BLUE Return (ground) : Ground 9 KEY (no connector) : VCC 10 SYNC Return (ground) : Ground 11 MONITOR ID Bit 0_5 : Monitor Sense Indicator 12 MONITOR ID Bit 1_5 :I DDC monitor data CRT Horizontal Sync this output is The 13 HORIZONTAL SYNC_5 :O (t/s) Horizontal sync pulse for the CRT Monitor. CRT Vertical Sync this output is the Vertical 14 VERTICAL SYNC_5 :O (t/s) sync pulse for the CRT Monitor. 15 MONITOR ID Bit 3_5 :I/O DDC monitor clock Absolute Maximum Conditions The following parameters are maximum ratings for VGA. Permanent device damage may occur if these rating are exceeded. Extended exposure to these ratings may also cause device failure. PARAMETER MIN MAX UNIT I/O VOLTAGE -0.5 +6.00V V -12mA(source) OUTPUT CURRENT mA +24mA(sink) FIC A550 Service Manual B-1 Pin Assignments B.2 Serial Port Connector The pin assignment of the serial (COM1) port connector is as follows: No PIN ASSIGMENT (by: sort) DESCRIPTION 1 DCDA#_T:I Active low Data Carrier Detect inputs for the serial port. 2 SINA_T:I Receiver serial data input for port 1. 3 SOUTA_12:O Transmit serial data output for port 1. 4 DTRA#_6:O Active low Data Terminal Ready outputs for the serial port. 5 GND Gro