Siemens KNX EIB TP-UART 2-IC - Page 25

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 25
P. O. Box 10 09 53, Subject to change without further notice.
D-93009 Regensburg
Interchargap (2Bit)
Parity
1 Startbit 1 Stopbit 8 Datenbits 15 Bit Pause
Addresstype TPCI Checksum Ack
Receive from Bus 6 7 p s s 0 1 2 3 4 5 6 7 p s s 0 1 2 3 4 5 6 7 p s s 0 1 2 3 4 5 6 7 p s s 0 1 2 3 4 5 6 7 p s
Addresstype TPCI Checksum
Send to Controller p s s 0 1 2 3 4 5 6 7 p s s 0 1 2 3 4 5 6 7 p s s 0 1 2 3 4 5 6 7 p s s 0 1 2 3 4 5 6 7 p s
Ack-Information
Rec from Controller s 0 1 2 3 4 5 6 7 p s
Send to Bus s 0 1 2 3 4 5 6 7 p s
Time for Addresssearch (17 Bit)
1 Bit Buffertime 1 Bit Buffertime
Fig. 12: Timing for send U_AckInfo (e.g. 9600 Baud)
Addressed
BUSY Mode
or BUSY
Yes
Send BUSYSend ACK
No
Yes
No
TPUART detects
any frame error
Yes
U_Ackinfo Service or TPUART internal addresscheck
No
NACK
Yes
Nein
Send NACK
Fig. 13: Ack / Nack / Busy Generation of the TP-UART