We are using the I3C interface to communicate with ICM42688 series chips.
When using the I3C HDR-DDR mode, we found that the datasheet only states that it supports the DDR mode, but there is no relevant protocol details.
Can you provide the communication protocol details about the I3C HDR-DDR mode of this series chip?
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Is there an answer to this question or an app note that addresses it? I have exactly the same question about the ICM-42670-P. Datasheet provides no details and the HDR protocol is word based not byte based like all other register accesses. Most other sensors provide a list of 16 bit word operations for their parts in HDR mode.
Thank you.
Hello,
Unfortunately, there is no specific app note about the protocol. It's compliant with I3C HDR protocol specification.
I'm trying to find similar information. I've tried to read/write from the device using HDR-DDR and the device rejects all attempts. Is there a specific command byte that is required? The datasheet provides absolutely no detail about HDR-DDR communication concerning vendor-specific details.