L9396 datasheet(78/109 Pages) STMICROELECTRONICS

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System functional safety implementations

L9396

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DS12539 Rev 10

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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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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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

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