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25.15.10.41.33a

25.10.01

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TECHNICAL DATA

EIB-TP-UART-IC

GENERAL DESCRIPTION

The TP - UART - IC (Twisted Pair - Universal Asynchronous Receive Transmit - IC) is a

transceiver which supports the connection of microcontrollers of sensors, actuators, or other

applications to the EIB (European - Installation - Bus).

This module supports every transmit- and receive - function and also the high ohmic decoupling

of energy from bus line. It generates further a stabilized 3.3V or 5V supply to use by a host

controller. Up to 256 subscribers can be connected to one bus line.

An UART interface is realized for communication with a host controller. The coupling can be

realized directly or via optical couplers.

The TP - UART - IC consists of two main parts: the digital part (UART - Interface) and the analog

part ( analog circuit part).

Features

• Signaling for standard UART (LSB-First,

Idle is 1)

• Baud rate 9600 or 19200 baud for the

communication:

TP - UART <--> Host - Controller

• Direct coupling to host controller (TxD,

RxD), or via optical couplers (optional)

• 2 - wire protocol with software handshake

• Buffering of send frames

• No critical timing during transmission

• 64 Byte telegram buffer

• Operating temperature range:

-25°C to 85°C

• Supervision of EIB bus voltage

VB -

Tx0

Rx IN

MODE 0

MODE 1

TEST MODE

X 1

X 2

TSTOUT

RxD

11

12

13

14

15

16

17

18

19

20

10

9

8

7

6

5

4

3

2

1

VB +

VSP

CSA

VCC

DIV

SAVE

TSTIN

VIF

RESn

TxD