I/O Device

Tews TCP465
cPCI	PowerPC	v. 4.0
Multiport Serial I/O

Tews' TCP465 is a standard 3U 32-bit CompactPCI module and offers eight channels of high-performance RS232/RS422/RS485 programmable serial interface. The module offers front-panel I/O with a HD50 SCSI-2 type connector. The TCP465-20 module offers additional J2 rear I/O.

The serial channels can be individually programmed to operate as RS232, RS422 or RS485 full duplex/half duplex interface. In addition programmable termination is provided for the RS422/RS485 interfaces. After power-up all serial I/O lines are in a high impedance state.

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). RS485 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 CompactPCI interrupt INTA. For fast interrupt source detection the UART provides a special global interrupt source register

All serial channels use ESD protected transceivers up to ±15KV.

The TCP465 can operate with 3.3V and 5.0V PCI I/O signaling voltage.

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