Rainbow Electronics ATA6624 - Manual (Page 8)

8
4986F–AUTO–07/08
ATA6622/ATA6624/ATA6626
A voltage less than the LIN Pre_Wake detection VLINL at the LIN pin activates the internal LIN
receiver.
Figure 4-2. Switch to Silent Mode
A falling edge at the LIN pin followed by a dominant bus level maintained for a certain time
period (t
bus
) and the following rising edge at the LIN pin (see Figure 4-3 on page 9 ) result in a
remote wake-up request. The device switches from Silent Mode to Fail-safe Mode. The internal
LIN slave termination resistor is switched on. The remote wake-up request is indicated by a low
level at the RXD pin to interrupt the microcontroller (see
Figure 4-3 on page 9 ). EN high can be
used to switch directly to Normal Mode.
Delay time silent mode
t
d
_sleep = maximum 20 µs
Mode select window
LIN switches directly to recessive mode
t
d
= 3.2 µs
LIN
VCC
NRES
TXD
EN
Normal Mode Silent Mode