LMH0324: Questions about the CD_N pin of LMH0324

Nakano Yuma

Prodigy 30 points

Part Number: LMH0324

I have a question regarding the CD_N pin of LMH0324.

Which signal does the CD_N pin detect?
I'm assuming it detects the IN0+,IN0- signals. Is this a problem?

Best regards.

over 2 years ago

+1 David Waier over 2 years ago

TI__Mastermind 18191 points

Hi Nakano,

When there is a valid SDI input signal, the CD_N pin is asserted.

Best,

David

0 Nakano Yuma over 2 years ago in reply to David Waier

Prodigy 30 points

Hi David

Thank you for your response.

I would like to ask an additional question, I am thinking of using an FPGA to control the SMBus mode of the LMH0324.
Is there any problem with compatibility with I2C?

0 David Waier over 2 years ago in reply to Nakano Yuma

TI__Mastermind 18191 points

Hi Nakano,

No, that shouldn't be a problem.

Best,

David

0 Nakano Yuma over 2 years ago in reply to David Waier

Prodigy 30 points

Hi David

Thank you for your response.

I often hear that I2C and SMBus are compatible, but what are the major differences between the two?

Best regards.

0 David Waier over 2 years ago in reply to Nakano Yuma

TI__Mastermind 18191 points

Hi Nakano,

This document may be helpful to clarify some differences between the two. Note one slight difference in SMBus' clocking frequency in this document is listed as 100kHz maximum, but the LMH0324 supports up to 400kHz.

Best,

David

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LMH0324: Questions about the CD_N pin of LMH0324