SFFS138 December   2021 TCAN1164-Q1

 

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5.1 Fault Reporting

The TCAN1164-Q1 utilizes interrupt registers for fault reporting. The global register is provided from the device whenever nCS is pulled low and a valid clock is provided on the SCLK pin. This register provides information on where to find other interrupts.
Table 5-1 INT_GLOBAL Register Field Descriptions (Address = 50h)
Bit Field Type Reset Description
7 GLOBALERR RH 0b Logical OR of all interrupts
6 INT_1 RH 0b Logical OR of INT_1 register
5 INT_2 RH 0b Logical OR of INT_2 register
4 INT_3 RH 0b Logical OR of INT_3 register
3 INT_CANBUS RH 0b Logical OR of INT_CANBUS register
2-0 RSVD R 0b Reserved
Table 5-2 INT_1 Register Field Descriptions (Address = 51h)
Bit Field Type Reset Description
7 WD R/W1C 0b Watchdog event interrupt.
NOTE: This interrupt bit will be set for every watchdog error event and does not reliy upon the Watchdog error counter
6 CANINT R/W1C 0b CAN bus wake up interrupt
5 LWU R/W1C 0b Local wake up
4 WKERR R/W1C 0b Wake error bit is set when the SWE timer has expired
3 RSVD R 0b Reserved
2 CANSLNT R/W1C 0b CAN silent
1 RSVD R 0b Reserved
0 CANDOM R/W1C 0b CAN bus stuck dominant
Table 5-3 INT_2 Register Field Descriptions (Address = 52h)
Bit Field Type Reset Description
7 RSVD R 0b Reserved
6 PWRON R/W1C 1b Power on
5 OVCCOUT R/W1C 0b VCCOUT overvoltage
4 UVSUP R/W1C 0b VSUP undervoltage
3 RSVD R 0b Reserved
2 UVCCOUT R/W1C 0b VCCOUT undervoltage
1 TSD R/W1C 0b Thermal Shutdown
0 TSDW R/W1C 0b Thermal Shutdown Warning
Table 5-4 INT_3 Register Field Descriptions (Address = 53h)
Bit Field Type Reset Description
7 SPIERR R/W1C 0b Sets when SPI status bit sets
6-0 RSVD R 00h Reserved
Table 5-5 INT_CANBUS Register Field Descriptions (Address = 54h)
Bit Field Type Reset Description
7:6 RESERVED R 0b Reserved. Reads return 0.
5 CANHCANL R/W1C 0b CANH and CANL shorted together
4 CANHBAT R/W1C 0b CANH shorted to Vbat
3 CANLGND R/W1C 0b CANL shorted to GND
2 CANBUSOPEN R/W1C 0b CAN bus open
1 CANBUSGND R/W1C 0b CAN bus shorted to GND or CANH shorted to GND
0 CANBUSBAT R/W1C 0b CAN bus shorted to Vbat or CANL shorted to Vbat