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Version 0.8 – January 2017

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5.3.4 Read Product Identifier

During assembly and start-up of the machine it might be required to check some basic parameters in the sensor - for example

to check if the correct sensor is integrated.

The product identifier and serial number can be read out after sending a sequence of two commands.

Command

Command code

Consecutive read

Description

Read product

identifier

0x367C

0xE102

Byte1: Product number [31:24]

Byte2: Product number [23:16]

Byte3: CRC

Byte4: Product number [15:8]

Byte5: Product number [7:0]

Byte6: CRC

Byte7: Serial number [63:56]

Byte8: Serial number [55:48]

Byte9: CRC

Byte10: Serial number [47:40]

Byte11: Serial number [39:32]

Byte12: CRC

Byte13: Serial number [31:24]

Byte14: Serial number [23:16]

Byte15: CRC

Byte16: Serial number [15:8]

Byte17: Serial number [7:0]

Byte18: CRC

Note that both commands need to be preceded

with an I2C write header (I2C address + W).

The second command returns:

-

32 bit unique product and revision

number. The number is listed in the

table below.

Note that the last 8 bits are the revision

number and are subject to change as

long as the datasheet is preliminary.

-

64 bit unique serial number

Product

Product number

SDP31

0x03010188

SDP32

0x03010283

5.3.5 Soft Reset

Command

I2C address + W bit +

command code (Hex)

Consecutive

read

Description

General call

reset

0x0006

NA

This sequence resets the sensor with a separate reset block,

which is as much as possible detached from the rest of the

system on chip.

Note that the I2C address is 0x00, which is the general call

address, and that the command is 8 bit. The reset is

implemented according to the I2C specification.

After the reset command the sensor will take maximum 20ms to reset. During this time the sensor will not acknowledge its

address nor accept commands.