4 Channel Isolated Programmable RS232/RS422/RS485 Serial Interface

  • Standard 3U 32 bit CompactPCI module
  • 4 channels with programmable RS232 / RS422 / RS485 interfaces
  • Channels are isolated from system and against each other
  • High performance asynchronous serial interface (up to 5.5296 Mbps)
  • Hardware handshake support available
  • Half-duplex mode available
  • 64 byte FIFO
  • Front panel I/O (HD50 SCSI-2 type connector)

Product status: Active

Operating Temperature Range -40 °C to +85 °C RoHS compliant

The TCP470 is a standard 3U 32 bit CompactPCI module and offers 4 channels of high performance serial interface. The module offers front panel I/O with a HD50 SCSI-2 type connector. Each of the eight channels is isolated from the system and against each other by digital isolator and on board integrated DC/DC converter. A 8 channel variant is realized as a special assembly called TCP469.

The TCP470 module is based on the Exar XR17D154 universal PCI quad UART.

Each serial channel can be programmed via a CPLD register to operate as an RS232, RS422 or RS485 interface. The RS422 and RS485 interfaces can be programmed as Full Duplex or Half Duplex interface with programmable termination.

Each RS232 channel supports RxD, TxD, RTS, CTS and GND. RS422 and RS485 Full Duplex support a four wire interface (RX+, RX-, TX+, TX-) plus ground (GND). Half Duplex supports a two wire interface (DX+, DX-) plus ground (GND).

Each channel has 64 byte transmit and receive FIFOs to significantly reduce the overhead required to provide data to and get data from the transmitters and receivers. The FIFO trigger levels are programmable and the baud rate is individually programmable up to 921.6 kbps for RS232 channels and 5.5296 Mbps for RS422/RS485 channels. The UART offers readable FIFO levels.

All channels generate interrupts on PCI interrupt INTA. For fast interrupt source detection the UART provides a special Global Interrupt Source Register.

All serial channels use ESD protected programmable multiprotocol transceivers. ESD protection is up to ±15KV.

All Modules can operate with 3.3V and 5.0V PCI I/O signalling voltage.

Softare Support (TDRV002-SW-xx) for different operating systems is available.

Mechanical Interface Standard 3U 32 Bit CompactPCI module conforming to
PICMG 2.0 R3.0
Electrical Interface PCI Rev. 2.3 compliant; 33 MHz / 32 bit PCI; 3.3V and 5V PCI Signaling Voltage
PCI Target Chip XR17D154 (Exar)
Quad UART XR17D154 (Exar)
Transceiver MAX3161E
Galvanic Isolation ADuM5401
Interface Type Asynchronous serial interface
Number of Channels 4
Physical Interface Software selectable RS232, RS422, RS485 full duplex, RS485 half duplex
Serial Channel I/O Signals RS232: TxD, RxD, RTS, CTS, GND
RS422/RS485 Full Duplex: TxD+/-, RxD+/-, GND
RS485 Half Duplex: Dx+/-, GND
Termination Software selectable 120ohms
ESD Protection ±15kVHuman Body Model
Programmable Baud Rates RS232: up to 921.6 kbps
RS485: up to 5.5296 Mbps
I/O Interface HD50 SCSI-2 type connector (e.g. AMP# 787395-5)
Power Requirements depends on mode, more information in User Manual
Temperature Range Operating: -40 °C to +85 °C
Storage: -40 °C to +100 °C
MTBF 756 000 h
Humidity 5 – 95% non-condensing
Weight 145 g



4 Isolated Channel Programmable RS232/RS422/RS485

4 programmable RS232/RS422/RS485 serial interfaces; RS232 supports hardware handshake; RS485 half-duplex support; baudrates up to 5.5296 Mbps (921.6 kbps for RS232); galvanic isolation; Front I/O via HD50 / SCSI-2 connector


HD50 / SCSI-2 Cable

HD50 / SCSI-2 Terminal Block

Cable Kit for Modules with HD50 / SCSI-2 Connector

Front panel extension for 3U cPCI boards


Device Driver for Multiple Channel Serial Interface Family

Data Sheet

Data Sheet

Data Sheet - Issue 1.0.1

User Manual

User Manual - Issue 1.0.2