OPT4001-Q1: Device ID's function

Rogers Chen

Part Number: OPT4001-Q1
Other Parts Discussed in Thread: OPT3001-Q1, , OPT3001, OPT3002, OPT4001

Dear experts,

Customers want to be compatible with OPT3002-Q1, OPT3001-Q1 and OPT4001-Q1 on the same board, distinguish them by the unique ID of the device, and use the corresponding I2C address for access. So the question is whether there is a certain rule in the device ID of these three products, so that the MCU can distinguish these three types of devices? Or is there another way to do this? Many thanks!

11 months ago

0 Jalen Tate89 10 months ago

TI__Genius 9675 points

Hi Rogers,

OPT4001-Q1 and OPT3001-Q1 have Device ID registers that can be read to determine which part is on the board.

There is no register to tell the difference between OPT3001 and OPT3002. By the way, there is no OPT3002-Q1 version.

Jalen

0 Rogers Chen 10 months ago in reply to Jalen Tate89

Intellectual 825 points

Hi Jalen,

Thanks for your reply. So you mean that the device ID of every OPT3001 is the same, but it is different from OPT4001, so we can distinguish OPT3001 and OPT4001 by device ID? Thanks!

0 Jalen Tate89 10 months ago in reply to Rogers Chen

TI__Genius 9675 points

Rogers,

The registers are different. Register 0x7Fh will provide device ID for OPT3001-Q1. Register 0x11h can be used for device ID of OPT4001-Q1.

OPT3001-Q1

OPT4001-Q1

Jalen

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OPT4001-Q1: Device ID's function