ID 1027-4487, Rev. 3.0 Page A - 9
CP308 CP308-HDD
CUSTOMER SPECIFIC
P R E L I M I N A R Y
The CP308 has the AT keyboard connector implemented on a 6-pin Mini-Din connector.
A.6.2 Universal Serial Port
One PC-compatible, serial RS-232, 9-pin D-Sub port is available, which is fully compatible with
the 16C550 controller. This port includes a complete set of handshaking and modem control
signals. Data transfer rates up to 115.2 kB/s are supported.
The COM1 interface is routed to the serial port connector J5.
Figure A-7: Keyboard/Mouse Connector J4 Pinout
PIN SIGNAL DESCRIPTION I/O
1 KDATA Keyboard data I/O
2 MDATA Mouse data I/O
3 GND Ground signal --
4 VCC VCC signal --
5 KCLK Keyboard clock I/O
6 MCLK Mouse clock I/O
Note ...
The PS/2 power supply provides short-circuit protection and all the signal lines
are EMI-filtered.
Figure A-8: Serial Port Connector J5
Table A-2: Serial Port Connector J5 Pinout
PIN SIGNAL DESCRIPTION I/O
1 DCD Data carrier detect I
2 RXD Receive data I
3 TXD Transmit data O
4 DTR Data terminal ready O
5 GND Signal ground --
6 DSR Data send request I
7 RTS Request to send O
8 CTS Clear to send I
9 RI Ring indicator I
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