LP8866-Q1: LP8866-Q1's CRC

yubin huang

Part Number: LP8866-Q1

Hi All

please help me to understand this completely, I just want to make sure.
1、Which registers are involved in CRC verification？Offset 0x0Ah?
2、If I write 0x5555 to register 0x0Ah, will the value used for CRC calculation when this register participates in CRC check be 0x0000 or 0x5555?

8 天前

0 Alice 8 天前

TI__Guru 51190 points

Hello,
We have received your post and the investigation will take some time.
Thanks for your patience.

0 Alice 8 天前回复 Alice

TI__Guru 51190 points

Hello,

1 All Registers in "Table 7-1. FULLMAP Registers".

2 This CRC check is only for default value, trims bits. In another word, CRC checking only work on chip initial phase.

LP8866-Q1 Automotive Display LED-backlight Driver with Six 200 mA Channels datasheet (Rev. C)

0 yubin huang 6 天前

Prodigy 10 points

Thank you for your reply. I would like to confirm one point: the CRC covers all registers（default value,trims bits）, including the default values of read-only registers, right?

+1 Alice 6 天前回复 yubin huang

TI__Guru 51190 points

Hello,

yubin huang 说：
including the default values of read-only registers, right?

YES. I don't think it matters much for read-only registers since CRC checking only work on chip initial phase.

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LP8866-Q1: LP8866-Q1's CRC