GAMMA instabus
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 19
P. O. Box 10 09 53, Subject to change without further notice.
D-93009 Regensburg
3 Digitalpart
TP-UART 2 is at the digital interface compatible with TP-UART. This means that the same drivers and
stacks can be used without modification.
In addition TP-UART 2 supports some additional useful services. These services reduce the necessary
performance in the microcontroller.
3.1 Relationship to ISO-Reference-Model
Host -
Contoller
UART - Digital - Part
UART - Analog - Part
Link -
Layer
Physical - Layer
Media - Access
Control
Logical Link -
Control
Network - Layer
Transport - Layer
Applikation - Layer
ISO - Layer
TP-
UART-
IC
Fig. 1: ISO/ OSI Layer
Tasks of the Logical Link - Control in:
TP-UART: Checksum, Parity, Immediate Acknowledge, Repetition, Timing
Host - Controller : Checksum, Parity, Addressing, Length
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