Siemens KNX EIB TP-UART 2-IC Manual page 7

KNX EIB TP-UART 2-IC
6 VDDH AIO
7 SVCC AIO
8 VCC AIO
9 IND AIO
10 VB- S
11 VB+ S
12 BYP AIO
13 TXO AIO
14 STxO AIO
15 RxIN AIO
16 VB- S
17 VIF S
18 SAVE DO_PU
19 RESn DIO_PU
20 RxD DI_PD
21 TxD DO
TSTOUT_TW
22 DO
23 X1 DI
24 X2 DO
25 V20PD DI
26 NC2 DIO
27 NC3 AIO
28 VDP AIO
29 TSTIN_BDS DIO
30 DIV DI
31 CTM_AMS DI
32 MODE 3 DI
33 MODE 2 DI
34 MODE 1 DI
35 MODE 0 DI
36 TESTMODE DI
7& B
? )
Siemens AG
Infrastructure and Cities Sector,
Building Technologies
Control Products and Systems
P. O. Box 10 09 53,
D-93009 Regensburg
VSP
VCC
5.5V Clamp
to VB-
VSP
Ground
70V Clamp to
VB-
VB+
VB+
VB+
VB+
Ground Negative bus
pin
5.5V Clamp
to VB-
VIF
VIF
VIF
VIF
VIF
VIF
VIF
VDP
VDP
VDP
5.5V Clamp
to VB-
VDP
VDP
VDP
VDP
VDP
VDP
VDP
VDP
Table 2: Pin Description
.& & $ 7 & '
$ % C
D ' ! $ & . !
' ! $ & . ! = !> & . $ $ 1 .&
© Siemens AG 2012
Subject to change without further notice.
VB- SMPS control
VB- VCC control
VB- External power supply 3.3/5 V
VB- SMPS-output; no external freewheeling
diode
Negative bus pin, exposed pad (see Figure
5 and 7.2 Layout Guidelines)
VB- Positive bus pin
VB- Bypass current stabilisation pin
VB- Transmit output current (bus signal)
VB- Transmitting active indication
VB- Capacitive coupled to bus signal
VB- External supply for IO cells
VB- Signalization of bus voltage break-down
VB- Reset pin, open drain with internal pullup
VB- Data receive from host with internal
pulldown
VB- Data transmission to host
VB- Digital test / temperature signal
VB- Crystal oscillator pin 1; external clock input
VB- Crystal oscillator pin 2
VB- Enable and disable V20
VB- Used during chip test mode
NA
VB- Storage capacitor for internal power supply
VB- Input for digital test / baud rate select;
digital output for analog test
VB- Internal clock divider 2:1 active
VB- Chip Test mode control
VB- Chip Test Mode control pin 4
VB- Chip Test Mode / Mode control pin 3
VB- Mode control pin 2
VB- Mode control pin 1
VB- Test mode control
pages 42
GAMMA instabus
Release: February 2012
Technical Manual
page 7