mc33905s Freescale Semiconductor, Inc, mc33905s Datasheet - Page 76
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mc33905s
Manufacturer Part Number
mc33905s
Description
System Basis Chip Gen2 With High Speed Can And Lin Interface
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC33905S.pdf
(91 pages)
Table 37. Flag Descriptions
76
33904/5
SERIAL PERIPHERAL INTERFACE
FLAGS
Vaux_low
Vaux_over-
current
5V-can_
Thermal
shutdown
5V-can_
UV
5V-can_
over-current
V
low
V
Under-voltage
I
NORMAL
mode
V
Thermal
shutdown
R
(<100ms)
V
batfail
I
Vddon mode
CAN
wake-up
CAN Over-
temp
RxD low
Rxd high
TxD dom
Bus Dom
clamp
DD
DD
SENSE
SUP
DD
SUP
ST
-OC-
-OC-LP
_low
_
_
_
_
Description
Set / Reset condition
Description
Set / Reset condition
Description
Set / Reset condition
Description
Set / Reset condition
Description
Set / Reset condition
Description
Set / Reset condition
Description
Set / Reset condition
Description
Set / Reset condition
Description
Set / Reset condition
Description
Set / Reset condition
Description
Set / Reset condition
Description
Set / Reset condition
Description
Set / Reset condition
Description
Set / Reset condition
Description
Set / Reset condition
Description
Set / Reset condition
Description
Set / Reset condition
Description
Set / Reset condition
Flag
Reports that V
Set: V
Report that current out of V
Set: Current above threshold for t >100μs. Reset: Current below threshold and flag read by SPI.
Report that the 5V-can regulator has reached over temperature threshold.
Set: 5V-can thermal sensor above threshold. Reset: thermal sensor below threshold and flag read
(SPI)
Reports that 5V-can regulator output voltage is lower than the 5V-can UV threshold.
Set: 5V-can below 5V-can UV for t >100μs typ. Reset: 5V-can > threshold and flag read (SPI)
Report that the CAN driver output current is above threshold.
Set: 5V-can current above threshold for t>100us. Reset: 5V-can current below threshold and flag read
(SPI)
Reports that V
Set: V
Reports that V
Set: V
Report that current out of Vdd pin is higher that Idd-oc threshold, while device is in Normal mode.
Set: current above threshold for t>100us typ. Reset; current below threshold and flag read (SPI)
Report that the Vdd has reached over temperature threshold, and was turned off.
Set: Vdd off due to thermal condition. Reset: Vdd recover and flag read (SPI)
Report that the Reset pin has detected a low level, shorter than 100ms
Set: after detection of reset low pulse. Reset: Reset pulse terminated and flag read (SPI)
Report that the device voltage at Vsup1 pin was below BATFAIL threshold.
Set: Vsup1 below BATFAIL. Reset: Vsup1 above threshold, and flag read (SPI)
Report that current out of Vdd pin is higher that Idd-oc threshold LP, while device is in Low Power V
ON Mode.
Set: current above threshold for t>100us typ. Reset; current below threshold and flag read (SPI)
Report that wake up source is CAN
Set: after CAN wake detected. Reset: Flag read (SPI)
Report that the CAN interface has reach over temperature threshold.
Set: CAN thermal sensor above threshold. Reset: thermal sensor below threshold and flag read (SPI)
Report that Rx pin is shorted to gnd.
Set: Rx low failure detected. Reset: failure recovered and flag read (SPI)
Report that Rx pin is shorted to recessive voltage.
Set: Rx high failure detected. Reset: failure recovered and flag read (SPI)
Report that Tx pin is shorted to gnd.
Set: Tx low failure detected. Reset: failure recovered and flag read (SPI)
Report that the CAN bus is dominant for a time longer than t
Set: Bus dominant clamp failure detected. Reset: failure recovered and flag read (SPI)
AUX
sense
sup1
below threshold for t >100μs typ. Reset: V
below threshold for t >100μs typ. Reset: V
below threshold for t >100μs typ. Reset: V
AUX
sense
sup1
regulator output voltage is lower than the V
terminal is lower than the V
terminal is lower than the V
AUX
regulator is above V
Description
sup1
sense low
low resoled.
AUX
AUX
sup1
sense
_OC threshold.
threshold.
above threshold and flag read (SPI)
above threshold and flag read (SPI)
Analog Integrated Circuit Device Data
above threshold and flag read (SPI)
DOM
AUX
_UV threshold.
Freescale Semiconductor
DD