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OMAP 3530 I2C clock issue

Nicolas Vassal
Prodigy 180 points
Other Parts Discussed in Thread: OMAP3530

Hello Omap experts,

I'm working on an EVM board with an OMAP3530. I have no OS, only stand alone code.

I'm trying to establish communication between OMAP and the embedded power IC through I2C_1 interface.

With my software I'm able to exchange data but I have noticed that the I2C_SCL is not at the expected frequency. In HS mode the SCL is @2.6MHz instead of 3.4MHz.

I have used the following parameters:  I2C_SCLL.hsscll = 7 & I2C_SCLL.hssclh = 9.

With observability I've also checked that CORE_96M8FCLK is @96MHz.

I have similar problem in FS mode but it is more obvious in HS.

Any idea of a parameter that I wouldn't have set properly??

Thanks in advance,

Regards.

 

Nicolas.