Siemens 5WK4 9046 User Manual page 5

Siemens VDO Automotive AG
Block diagrams of the transmitter
Battery A
Battery B
Button's
Keyless Go -
Control Unit
I:\POSTZULA\MB_DC\DesignKey\Original_Doku\Func_Designkey.doc
IC: 267T-5WK49046
Power management
standard
µC interface
µC for button
and
LF communication
SV C BC P2 RF TG
FCC ID:KR55WK49046
µC for
RF Tx and
IR RxTx
data transmission
9,84375 MHz Crystal for 315,0 MHz
13,5687 MHz Crystal for 433.92 MHz
Page 4 of 7
IR- Transmitter
IR - Receiver
Manchester
coded
RF transmitter
LED
Crystal