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Application Information

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.

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