The Embedded I/O Company

TPMC466 4 Channel RS232/RS422/RS485 Programmable Serial Interface

Application Information

The TPMC466 is a standard single-width 32 bit PMC

module and offers 4 channels of high performance

RS232/RS422/RS485 programmable asynchronous serial

interface. The module offers front panel I/O with a HD50

SCSI-2 type connector and P14 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 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 TPMC466 can operate with 3.3V and 5.0V PCI I/O

signaling voltage.

Software

Support

(TDRV002-SW-xx)

for

different

operating systems is available.

TEWS TECHNOLOGIES GmbH keeps the right to change technical specification without further notice.

All trademarks mentioned are property of their respective owners.

Issue 1.0.1

2017-08-31

TEWS TECHNOLOGIES GmbH

Am Bahnhof 7

25469 Halstenbek, Germany

Phone: +49 (0) 4101 4058 0

Fax: +49 (0) 4101 4058 19

e-mail: info@tews.com

www.tews.com