CP302
IDE2 Module
ID 21112, Rev. 05
Page C - 6
©
PEP Modular Computers GmbH
C.4 Module Interfaces (Front Panel and On-board)
The front panel of the IDE2 module is integral with the CP302/CP302-PM baseboard
front panel - please see Figure 2-2 in Chapter 2.
The IDE2 module includes additional standard PC interfaces, two configurable COM
ports, one ECP/EPP compatible Parallel Port I/O Module Connection Interface and an
onboard HardDisk and floppy interface.
C.4.1 Serial Port Interfaces
Figure C-5: PC-Compatible D-sub Serial Interface
Two PC-compatible serial 9-pin DSUB ports are available with 5V
charge-pump technology eliminating the need for a +12V and -12V
supply. The two COM ports, which are fully compatible with the
16550 controller, include a complete set of handshaking and
modem control signals, maskable interrupt generation and data
transfer of up to 460.8 kB/s.
The two COM interfaces may be configured as RS232, RS422 or RS485 ports by
setting the appropriate solder jumpers. The standard setting of the two COM ports
envisages the RS232 configuration.
RS-422 configuration:
The RS-422 interface use two differential data lines RX and TX for communication
(Full-Duplex)
RS-485 configuration:
The RS-485 interface use one differential data line. It differs from the RS-422 modes in
that it provides the ability to transmit and receive over the same wire. The RTS signal is
used to control the direction of the RS-485 buffer.
CON2 and CON6 pinouts appear on following page
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