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 5
P. O. Box 10 09 53, Subject to change without further notice.
D-93009 Regensburg
1 Modes of Operation
1.1 Interface to host electronics
TxD
RxD
Normal Mode:
Bus Coupler
Mode:
EIB
Part
Part
HOST -
Controller
1.2 Selection of Different Modes of Operation
Mode of
operation
MODE TEST MODE CTM TSTIN_BDS TSTOUT_TW
0 1 2 3
Normal 1 1 0 0 0 0
BDS=0: 19.2 kBd
at UART
BDS=1: 9.6 KBd
at UART
TW
Analog
1 0 0 0 0 0 0 TW
Table 1: Modes of Operation