Functional Description
CP6003-SA
Page 2 - 14
ID 1044-9757, Rev. 2.0
P R E L I M I N A R Y
2.10.5
COM Ports
The CP6003-SA 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 interface on the rear I/O.
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).
Note ...
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-SA provides two jumpers, JP2 and JP3, used to activate the bus
termination for the RS-422 (COMB) port.
For further information on the JP2 and JP3 jumpers, refer to Chapter 4.2,
Jumper Description.
Figure 2-3: Serial Con. J8 (COMA)
1
8
Table 2-10: Serial Con. J8 (COMA) Pinout
PIN
SIGNAL
FUNCTION
I/O
1
RTS
Request to send
O
2
DTR
Data terminal ready
O
3
TXD
Transmit data
O
4
GND
Signal ground
--
5
GND
Signal ground
--
6
RXD
Receive data
I
7
DSR
Data set ready
I
8
CTS
Clear to send
I
