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PNI Sensor Corporation Doc #1018049 R03

SENtral Technical Data Sheet Page 39

Appendix I – Configuration File Image Format

Table A1-1 provides the format for the Configuration File image. While understanding the

Configuration File image format is not mandatory for operation, it can be useful when debugging

errors.

Table A1-1: Configuration File Image Format

Byte Index

Content

Note

0x00

Magic Number Lower Byte

0x2A is expected value

0x01

Magic Number Upper Byte

0x65 is expected value

0x02 & 0x03

Flags

Bit [0] – EEPROMExec

0 = Execute after EEPROM

upload (default)

1 = Do not execute after

EEPROM upload

Bits [8] to [10] – I2CClockSpeed

000 – 1 Mbit/s

001 – 833 kbit/s

010 – 400 kbit/s

011 – 333 kbit/s

100 – 100 kbit/s

Others – 83 kbit/s

Bits [11] to [14] – ROMVerExp.

0001 – version 0x7A8

0010 – version 0x9E6

0x04 to 0x07

CRC32 of uploaded image

Stored in Little Endian Format

0x08 to 0x0B

Reserved

0x00000000

0x0C & 0x0D

Uploaded Image Length (UIL)

Stored in Little Endian Format

0x0E & 0x0F

Reserved

0x0000

0x10 to

0x10+UIL-46

Uploaded Image – Instructions &

Configuration File Data

CRC32 is calculated over

uploaded image

0x10+UIL-45 to

0x10+UIL-1

Uploaded Image –Config. File

Data Structure. See Table A1-2.

1 2 ... 35 36 37 38 39 40 41 42 43 44 45 ... 53 54

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