L9396 datasheet(78/109 Pages) STMICROELECTRONICS

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System functional safety implementations

L9396

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DS12539 Rev 6

WD Seed

Note:

WD Seed and WD Answer will be into the same SPI register. When a Read operation will be

performed a new seed will be sent and the read will be treated as a new Seed request.

When an Answer write will not be treated as a new Seed request and the seed related to

that answer will be sent back.

WD Answer

Note:

WD Seed and WD Answer will be onto the same SPI register. When a Read operation will

be performed a new seed will be sent and the read will be treated as a new Seed request.

When an Answer write will not be treated as a new Seed request and the seed related to

that answer will be sent back.

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76543210

Addr

Reserved

Seed

CRC

SPI parameter

Size

(bits)

default

Description

Seed

Current value of the Seed sent to the Micro to be used for the

Answer elaboration

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76543210

Addr

Reserved

Answer High

Answer Low

CRC

SPI parameter

Size

(bits)

default

Description

Answer Low

Lower part of the answer

Answer High

Higher part of the answer

L9396 Datasheet(PDF) 78 Page - STMicroelectronics

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