TEWS TPMC377 Conduction Cooled PMC, 4 Channel Isolated RS232/RS422/RS485 Programmable Serial Interface

Application Information

The TPMC377 is a conduction cooled single-width 32 bit

PMC module offering 4 channels of high performance

RS232/RS422/RS485 programmable asynchronous serial

interface with P14 I/O. Each of the four channels are

isolated from the system and against each other by digital

isolator and on board integrated DC/DC converter.

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 PCI interrupt INTA. For

fast interrupt source detection the UART provides a

special Global Interrupt Source Register.

All serial channels use ESD protected transceivers. ESD

protection is up to ±15KV.

The TPMC377 can operate with 3.3V and 5.0V PCI I/O

signaling voltage.

Software Support (TDRV002-SW-xx) for different

operating systems is available.