AMIS−41682, AMIS−41683
Failure 1 : CANH wire interrupted
Failure 4 : CANL shorted to Gnd
Vbat Vcc
RTL
Vbat Vcc
GND
RTL
RTL
RTL
0.6Vcc
0.6Vcc
TxD
TxD
CL
CL
TxD
TxD
RxD
ERR
CANL
CANH
CANL
CANH
CANL
CANH
CANL
CANH
CD
CD
RxD
ERR
RxD
ERR
RxD
ERR
CH
CH
0.4Vcc
0.4Vcc
RTH
RTH
RTH
RTH
Error−detection: CL= CH more then 4 pulses
Error−detection: dominant longer then Tnd_f4
Failure 2 : CANL wire interrupted
Failure 6 : CANL wire shorted to Vbat
Vbat Vcc
Vbat Vcc
Vbat
RTL
RTL
RTL
RTL
0.6Vcc
0.6Vcc
TxD
TxD
CL
CL
TxD
RxD
ERR
TxD
CANL
CANH
CANL
CANH
CANL
CANH
CANL
CANH
CD
CD
RxD
ERR
RxD
ERR
RxD
ERR
CH
CH
0.4Vcc
0.4Vcc
RTH
RTH
RTH
RTH
Error−detection: CL= CH more then 4 pulses
Error−detection: CANL>7V
Failure 3 : CANH shorted to Vbat
Failure 6a : CANL shorted to Vcc
Vbat Vcc
RTL
Vbat Vcc
Vcc
RTL
RTL
RTL
0.6Vcc
0.6Vcc
TxD
TxD
CL
CL
TxD
TxD
RxD
ERR
CANL
CANH
CANL
CANH
CANL
CANH
CANL
CANH
CD
CD
RxD
ERR
RxD
ERR
RxD
ERR
CH
CH
0.4Vcc
0.4Vcc
RTH
RTH
RTH
RTH
Vbat
Error−detection: CL= CH more then 4 pulses
Error−detection: CANH > 2V longer then Tnd_f3
Failure 3a : CANH shorted to Vcc
Failure 7 : CANH shorted to CANL
Vcc
Vbat Vcc
Vbat Vcc
RTL
RTL
RTL
RTL
0.6Vcc
0.6Vcc
TxD
TxD
CL
CL
TxD
RxD
ERR
TxD
RxD
ERR
CANL
CANH
CANL
CANH
CANL
CANH
CANL
CANH
CD
CD
RxD
ERR
RxD
ERR
CH
CH
0.4Vcc
0.4Vcc
RTH
RTH
RTH
RTH
Vcc
Error−detection: CANH >2V longer then Tnd_f3
Error−detection: dominant longer then Tnd_f7
Failure 5 : CANH shorted to Gnd
Vbat Vcc
RTL
RTL
0.6Vcc
TxD
CL
TxD
CANL
CANH
CANL
CANH
CD
RxD
ERR
RxD
ERR
CH
0.4Vcc
RTH
RTH
GND
Error−detection: CL= CH more then 4 pulses
Figure 4. Different Types of Wiring Failure
Low Power Modes
The standby mode will react the same as the sleep mode
but with a high−level on pin INH.
The transceiver provides three low power modes, which
can be entered and exited via Pins STBB and EN (see
Figure 5). (Go−to−sleep mode is only a transition mode.)
The sleep mode is the mode with the lowest power
consumption. Pin INH is switched to high−impedance for
deactivation of the external voltage regulator. Pin CANL is
biased to the battery voltage via Pin RTL. If the supply
voltage is provided, Pins RXD and ERR will signal the
wake−up interrupt signal.
The power−on standby mode is the same as the standby
mode with the battery power−on flag instead of the wake−up
interrupt signal on Pin ERR. The output on Pin RXD will
show the wake−up interrupt. This mode is only for reading
out the power−on flag.
Wake−up request is detected by the following events:
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