MC33903 Datasheet, PDF (82/98 Pages) Freescale Semiconductor, Inc – SBC Gen2 with CAN High Speed and LIN Interface

SERIAL PERIPHERAL INTERFACE
FLAGS AND DEVICE STATUS
Table 38. Flag Descriptions
Flag
I/O
HS3 short to
GND
HS2 short to
GND
SPI parity
error
CSB low
>2.0 ms
V_SUP2-UV
V_SUP1-OV
I/O-0 thermal
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
W/D flash
mode 50%
Description
Set / Reset condition
I/O-1-3 wake- Description
up
Set / Reset condition
I/O-0-2 wake- Description
up
Set / Reset condition
SPI wake-up Description
Set / Reset condition
FWU
Description
Set / Reset condition
INT service
Timeout
Description
Set / Reset condition
Low Power
V_DD OFF
Description
Set / Reset condition
Reset request Description
Set / Reset condition
Hardware
Description
Leave Debug
Set / Reset condition
Description
Report I/O-3 high side switch short to GND failure
Set: failure detected. Reset failure recovered and flag read (SPI)
Report I/O-2 high side switch short to GND failure
Set: failure detected. Reset failure recovered and flag read (SPI)
Report SPI parity error was detected.
Set: failure detected. Reset: flag read (SPI)
Report SPI CSB was low for a time longer than typ 2.0 ms
Set: failure detected. Reset: flag read (SPI)
Report that V_SUP2 is below V_SUP2-UV threshold.
Set V_SUP2 below V_SUP2-UV thresh. Reset V_SUP2 > V_SUPUV thresh and flag read (SPI)
Report that V_SUP1 is above V_SUP1-OV threshold.
Set V_SUP1 above V_SUP1-OV threshold. Reset V_SUP1 < V_SUPOV thresh and flag read (SPI)
Report that the I/O-0 high side switch has reach over-temperature threshold.
Set: I/O-0 high side switch thermal sensor above threshold. Reset: thermal sensor below threshold
and flag read (SPI)
Report that the W/D period has reach 50% of its value, while device is in Flash mode.
Set: W/D period > 50%. Reset: flag read
Report that wake-up source is I/O-1 or I/O-3
Set: after I/O-1 or I/O-3 wake detected. Reset: Flag read (SPI)
Report that wake-up source is I/O-0 or I/O-2
Set: after I/O-0 or I/O-2 wake detected. Reset: Flag read (SPI)
Report that wake-up source is SPI command, in Low Power V_DD ON mode.
Set: after SPI wake-up detected. Reset: Flag read (SPI)
Report that wake-up source is forced wake-up
Set: after Forced wake-up detected. Reset: Flag read (SPI)
Report that INT timeout error detected.
Set: INT service timeout expired. Reset: flag read.
Report that Low Power V_DD OFF mode was selected, prior wake-up occurred.
Set: Low Power V_DD OFF selected. Reset: Flag read (SPI)
Report that RST source is an request from a SPI command (go to RST mode).
Set: After reset occurred due to SPI request. Reset: flag read (SPI)
Report that the device left the Debug mode due to hardware cause (voltage at DBG pin lower than
typ 8.0 V).
Set: device leave debug mode due to hardware cause. Reset: flag read.
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Analog Integrated Circuit Device Data
Freescale Semiconductor