Teknor Industrial Computers TEK-CPCI 1003, Техническое справочное руководство

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TEK-CPCI-1003 Technical Reference Manual
7-12
Upon a power-up or reset, the Serial Port 3 interface circuits are automatically configured for
the operation mode setup in the BIOS. The Serial Port 3 signal assignation on the J5 CPCI
I/O connector depends on the operation mode (RS-232, RS-422, or RS-485) it has been set:
Pin Number (J5)
RS-232 RS-422 RS-485
A11 /JDCD2
/DCD /DCD
C11 JRXD2
RX(-) RX/TX(-)
D11 /JDSR2
DSR DSR
E11 JTXD2
TX(-) -
A12 /JRTS2
RX(+) RX/TX(+)
B12 /JCTS2
TX(+) -
C12 /JRI2
/RI /RI
E12 /JDTR2
/DTR /DTR
To configure the Serial Port 3 operation mode, use the BIOS setup program. See Section
12.3.7 -
Integrated Peripherals .
§
Infrared Mode:
Infrared (IR) interface signals are provided to drive IR module for remote operations
through Serial Port 3. When set in IR mode, the IR interface supports multi-protocol
infrared operations. The IR interface is IrDA 1.1 compliant, and supports TEMIC/HP
modules, SHARP ASK IR, and consumer IR.
§
RS-232 Protocol:
When configured for RS-232 operation mode, the Serial Port 3 is 100% compatible with
the IBM-AT serial port signals.
§
RS-422 Protocol:
The RS-422 protocol (Full Duplex) uses both RX and TX lines during a communication
session.
There are no user software restrictions except that software must not attempt to use the
handshake line because they are not connected. However, handshaking by software only
(XON-XOFF) may be used.
CAUTION
In RS-422 mode, W9 and W10 jumper caps must be installed to connect
the 120 ohms termination resistors (See Section 10 –
Jumper Settings ).