TCA9546A: Change IBIS pin mode

Kay Chen53

Expert 2225 points

Part Number: TCA9546A
Other Parts Discussed in Thread: PCA9546A,

Hi there:

My customer would like to know how to change the SC0-pin into output status when SCL input?

We only could find the default status is NC.

over 6 years ago

0 BOBBY over 6 years ago

TI__Guru 72901 points

Hey Kay,

"My customer would like to know how to change the SC0-pin into output status when SCL input?"

Unfortunately there is not a way to do this.

I will get back to you tomorrow to see if we have another device similar to this with a working IBIS model.

Thanks,

-Bobby

0 BOBBY over 6 years ago in reply to BOBBY

TI__Guru 72901 points

Hey Kay,

I've looked at all of our TCA IBIS models but it looks like all of them have NC for the secondary channels.

The only alternative I see here is to utilize the IBIS model for the PCA9546A, they both use the same pass FET architecture to pass lows.

Thanks,
-Bobby

0 Fan Andy over 6 years ago in reply to BOBBY

Prodigy 60 points

Hi there,

I use the IBIS model that you recommend, it shows the errors as below picture, how could I solve it ?

0 BOBBY over 6 years ago in reply to Fan Andy

TI__Guru 72901 points

Fan,

I've reassigned this thread to our Webench team as they may have a better understanding on how to resolve the issue you are seeing.

-Bobby

0 Fan Andy over 6 years ago in reply to BOBBY

Prodigy 60 points

Hi Bobby,

Do you have any update?

0 BOBBY over 6 years ago in reply to Fan Andy

TI__Guru 72901 points

Hey Fan,

The question has already been moved to another group. This group should provide a response for you.

-Bobby

0 Bonnie Chen over 6 years ago in reply to BOBBY

TI__Intellectual 1150 points

Hi Bobby,

which group are you mentioning ? can you loop them in with me.

0 BOBBY over 6 years ago in reply to Bonnie Chen

TI__Guru 72901 points

Hey Bonnie,

The group I am referring to is the TI TINA/Spice Modeling group.

You may want to generate a new Forum thread here: e2e.ti.com/.../234
to get their attention.

-Bobby

0 Fan Andy over 6 years ago in reply to BOBBY

Prodigy 60 points

Hi Bobby,

We seem to find the problem, there are no " Series Pin Model " and " Series Switch Groups " in TCA9546A ibis model, we try to copy these information from others, it can work.

So can you share the TCA9546A's " Series Pin Model " and " Series Switch Groups " information for me?

In addition, we find the model name SC0 default setup is "NC" but it still work, shall we give it another model name? If yes, which model name should I give?

Thanks!

0 BOBBY over 6 years ago in reply to Fan Andy

TI__Guru 72901 points

Hey Fan,

Can you remake this thread in the modeling forum:
e2e.ti.com/.../2886854

They do support for the models for TI. I can only provide analog support for devices, I don't have the expertise in modeling software required for this request.

Thanks,
-Bobby

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TCA9546A: Change IBIS pin mode