Siemens KNX EIB TP-UART 2-IC - User Manual

GAMMA instabus
OEM- Product Catalogue
Release: February 2012
KNX EIB TP-UART 2-IC
Siemens AG pages 42 Technical Manual
Infrastructure and Cities Sector,
Building Technologies
Control Products and Systems © Siemens AG 2012 page 1
P. O. Box 10 09 53, Subject to change without further notice.
D-93009 Regensburg
Features
• Signaling for standard UART (LSB-
First, Idle is 1)
• Baud rate 9600 or 19200 for the
communication: TP-UART 2  Host
– Controller
• Direct coupling to host controller (TxD,
RxD), or via optical couplers (optional)
• 2-wire protocol with software
handshake
• Buffering of sent frames
• No critical timing during transmission
• VCC switchable between 3.3 V
and 5 V
• Efficiency of VCC-supply ≥ 75 %
• I
VCC
≤ 30mA (50 mA if no load at V20)
• Switchable V20 power supply
20V/25mA with limiting function
• I
V20max
adjustable in steps
• IVB+max overshoot due to load
changes actively limited
• Operating temperature range: -25°C to
85°C
• Small QFN36X36 package
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).

Summary

Features

GENERAL DESCRIPTION

MODES OF OPERATION

Interface to host electronics

Describes the connection between the TP-UART and host controller.

Selection of Different Modes of Operation

Details pin settings for selecting device operation modes.

THE ANALOG - PART

Package and Pin Definitions

Details IC package outline and provides descriptions for each pin.

Operating Conditions and Ratings

Specifies general operating conditions and absolute maximum ratings for reliable operation.

Supply and Interface Pins

Details supply pins (VB+, VCC, VDP, V20, VSP) and interface pins (RxIN, TxO, VIF, etc.) functions.

DIGITALPART

Relationship to ISO-Reference-Model

Illustrates TP-UART's relation to ISO/OSI model layers.

UART Interface Details

Covers UART config, timing, protocol, services (Reset, State, Busmon, Ack, L_Data, etc.), and functions.

MECHANICAL SPECIFICATION

Package Outline

Provides package type, dimensions, and outline drawings for the IC.

TAPE AND REEL PACKING

SOLDERING PROFILE

APPENDIX

Typical Application Circuits

Shows typical circuit diagrams for normal and analog operation modes.

Layout Guidelines

Provides guidelines for component placement and PCB layout.

Siemens KNX EIB TP-UART 2-IC Specifications

General

Brand	Siemens
Model	KNX EIB TP-UART 2-IC
Category	Industrial Equipment
Language	English