DLPC350: I2C signal is running before before INIT_DONE signal

Hi Hiroyasu,

What is the issue with I2C_SCL line ? Is the BUS is getting pulled-low for long duration (how-long??) by the DPC350 during initialization in the marked section? INIT_BUSY signal must be low only then you can start the communication.

Which bus you are looking? I2C0 or I2C1? Your front-end must be communicating on I2C1... I2C0 is the master port on the DLPC350.

Regards,

Sanjeev

Hiroyasu-san,

This occurs during the DLPC350 power-up initialization; i measured the there is activity on I2C_PORT1 of the DLPC350 and the activity is < 250us in total, as below -

Controller during the start-up reset and configure the i2c port  as master or slave; since the disturbance is too small for the any other device to effect, not sure if this cause issues with any other device on the bus.

Regards,

Sanjeev

Hi, Sanjeev

Thank you for your support.
Is it specification of DLPC350 ?
If yes, We have to explain about this.

Best Regards
Hiroyasu