CCS/UCD3138064: Where is the UCD3138064 I2C frequency comes from ?

user5779721

Part Number: UCD3138064
Other Parts Discussed in Thread: UCD3138

Tool/software: Code Composer Studio

Hello

I knew in UCD3138064 I2C frequency can't get to 400Khz , Bcause of wait the CLK rise to the Vih. And I hopping to know that where is the I2C frequency of UCD3138064 comes from?

is it comes from frequency division?

And have any datasheet to introduce the design of I2C in UCD3138064?

If you can tell me about the design philosophy of I2C in UCD3138064 i will be appreciate.

over 5 years ago

0 Yitzhak Bolurian over 5 years ago

TI__Mastermind 18370 points

Please note in most cases UCD3138 is used in Slave mode.

Therefore the frequency of Clock is not dictated by UCD3138.

UCD3138 just samples the clock line to know if it is high or low and act accordingly.

The frequency of sampling the clock line (input) stays the same regardless of the clock frequency and clock frequency setting.

Regards,

0 Yitzhak Bolurian over 5 years ago

TI__Mastermind 18370 points

If the above addresses your question, please set the status of this post to resolved.
Regards,

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CCS/UCD3138064: Where is the UCD3138064 I2C frequency comes from ?