TPS65987D: I2C1 access

Anderson2

Expert 1035 points

Part Number: TPS65987D

I use 987D as I2C1 Slave and the EC which is I2C1 Master monitors 987D's registers by polling.

The EC accesses the 987D ten times a second and reads about ten registers at that time.

In this system, the tSrcRecover is too long and don't meet the PD3.0 Spec.

I think the 987D has not caught up with the access.

Would you tell me the recommend polling access frequency and the maximum polling access frequency by I2C Master?

over 6 years ago

0 Eric Beljaars over 6 years ago

TI__Mastermind 36756 points

Hi Anderson,

I would suggest using the I2C interrupt signals from the TPS65987D to trigger the reads from the EC. This way you can prevent reading duplicate data and only do a read once the desired registers have been updated.

Thanks,
Eric

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TPS65987D: I2C1 access