TLE7259G

Functional Description

Data Sheet

9

Rev 2.1, 2007-04-27

4.7

Local Wake-up

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

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.

V

WK

V

WK,L

WK Signal

Sleep Mode

Stand-By Mode

INH

t

WK