L9300 datasheet(176/182 Pages) STMICROELECTRONICS

176 / 182 page

12.3

GPO error handling............................................................ 77

PRUN watchdog ..................................................................78

13.1

PRUN watchdog functional description ........................................... 78

13.1.1

PRUN over frequency detection ............................................ 80

13.1.2

Reset-Latch function ..................................................... 81

13.2

PRUN watchdog electrical characteristics ......................................... 83

13.3

PRUN watchdog error handling.................................................. 84

Q&A Watchdog ...................................................................85

14.1

Q&A watchdog functional description ............................................. 85

14.1.1

Timing ................................................................ 85

14.1.2

Watchdog states evolution ................................................ 87

14.1.3

Out Of Sequence error cases .............................................. 90

14.1.4

Seed generation and answer check ......................................... 91

14.2

Q&A watchdog SPI registers .................................................... 92

14.2.1

CAN Interface.....................................................................93

15.1

CAN interface functional description.............................................. 93

15.1.1

CAN error handling ...................................................... 93

15.1.2

Wakeup (from CAN) ..................................................... 94

15.1.3

CAN Sleep Mode ....................................................... 95

15.1.4

CAN receive-only mode .................................................. 95

15.1.5

CAN looping mode ...................................................... 95

15.1.6

CAN disable ........................................................... 95

15.2

CAN electrical characteristics ................................................... 95

15.3

CAN error handling ............................................................ 98

SPI interface and register mapping................................................99

16.1

SPI functional description....................................................... 99

16.1.1

SPI protocol .......................................................... 100

16.1.2

CRC field ............................................................ 100

16.1.3

Channel exception field details ............................................ 100

16.2

SPI electrical characteristics ...................................................100

L9300

Contents

DS12258 - Rev 4

page 176/182

L9300 Datasheet(PDF) 176 Page - STMicroelectronics

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