Siemens KNX EIB TP-UART 2-IC - Page 2

GAMMA instabus
Release: February 2012
KNX EIB TP-UART 2-IC
Technical Manual pages 42 Siemens AG
Infrastructure and Cities Sector,
Building Technologies
page 2 © Siemens AG 2012 Control Products and Systems
Subject to change without further notice. P. O. Box 10 09 53,
D-93009 Regensburg
GENERAL DRAWING
Po w er
Su pply
3 0V
TP -UA RT -
IC
+
-
A - Bus
B - B us
Bus Device 1 Bus D evice 2 Bus D evice n
O ptio nal Po wer Sup ply
2 30V / 5 0H z
O ptio nal
Electrical Isolation
(O pto couple r)
TxD
RxD
TxD
RxD
TxD
Rx D
...
TP -UA RT -
IC
TP-U A RT -
IC
A pplication Applica tion Applicatio n
STRUCTURE OF TP-UART 2-IC
(Block Diagram)
Filter
1 Byte
Receviebuffer
KNX Receiver
UART Transmitter
64 Byte Sendbuffer
KNX Transmitter
RxD
TxD
RxD3 TxD3
RESn
Physical Address
State flags
ACK Flags
UARTReceiver
Transmit Receive
4,9152 MHz
(2,4576 MHz)
0,05 %
Control logic
RxIN
TxO