TLE7259G_07 Datasheet, PDF (9/27 Pages) Infineon Technologies AG – LIN Transceiver

4.7
Local Wake-up
WK Signal
V_WK
V_WK,L
t_WK
TLE7259G
Functional Description
Sleep Mode
Stand-By Mode
INH
Figure 5 Local wake-up behavior
Beside the remote wake-up, a wake-up of the TLE7259G via the WK pin is possible. This wake-up event is called
local wake up. A falling edge on the WK pin followed by a logical “Low“ for t > t_WK results in a local wake up (see
Figure 5) and change the operation mode to Stand-By Mode.
In Stand-By mode the TxD pin indicates the source of the wake-up event. A strong pull down on the pin TxD
indicates a local wake-up event via the pin WK (see Figure 3). The RxD pin signals if a wake-up event occurred
or the power-up event. A logical “Low” on the RxD pin reports a local or bus wake-up event, a logical “High“ signal
on RxD indicates a power-up event.
Data Sheet
9
Rev 2.1, 2007-04-27