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Functional Description
2.10.6
COM Ports
The CP6003-RA provides two COM ports, COMA and COMB. COMA is available on the front
panel as a serial RS-232, 8-pin, RJ-45 connector, J8, and on the rear I/O simultaneously.
COMB is only available as an RS-422/RS-232 interface on the rear I/O.
The CP6003-RC provides two COM ports on the rear I/O, COMA (RS-232) and COMB (RS-
422/RS-232).
COMA and COMB are fully compatible with the 16550 controller. The rear I/O COMA port in-
cludes a complete set of handshaking and modem control signals. The COMA and COMB ports
provide maskable interrupt generation. The data transfer on the COM ports is up to 115.2 kbit/s.
The following figure and table provide pinout information for the serial connector J8 (COMA).
Figure 2-3: Serial Con. J8 (COMA)
Note ...
On the CP6003-RA, COMA can be used either on the front panel or on the
rear I/O. It is not possible to use COMA on the front panel and the rear I/O
simultaneously.
Note ...
The CP6003-RA/RC provides two jumpers, JP2 and JP3, used to activate the
bus termination for the RS-422/RS-232 (COMB) port.
For further information on the JP2 and JP3 jumpers, refer to Chapter 4.3,
Jumper Description.
Page 2 - 14
Table 2-13: Serial Con. J8 (COMA) Pinout
8
1
PIN
SIGNAL
1
RTS
2
DTR
3
TXD
4
GND
5
GND
6
RXD
7
DSR
8
CTS
CP6003-RA/RC
FUNCTION
I/O
Request to send
O
Data terminal ready
O
Transmit data
O
Signal ground
--
Signal ground
--
Receive data
I
Data set ready
I
Clear to send
I
ID 1046-3890, Rev. 1.0
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