Rainbow Electronics ATA6630 User 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
) 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
). 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