Rainbow Electronics ATA6630 - Manual (Page 10)

10
9117C–AUTO–10/09
ATA6628/ATA6630 [Preliminary]
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 10 ) 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 10 ). EN high can be
used to switch directly to Normal Mode.
Figure 4-3. LIN Wake-up from Silent Mode
W a tchdog off S t a rt w a tchdog le a d time t
d
W a tchdog
Undervolt a ge detection a ctive
S ilent mode 3 . 3 V/5V/50 mA F a il sa fe mode 3 . 3 V/5V/50 mA Norm a l mode
Low
Fail- s afe mode Normal mode
EN High
Node in s ilent mode
High High
NRE S
EN
VCC
volt a ge
reg u l a tor
RXD
LIN bus
B us w a ke- u p filtering time
t
bus
TXD
Don't c a re