TCA9548A: Does the TCA9548A have Dynamic addressing of it's main I2C line or not.

Keyvan Johnson1

Part Number: TCA9548A

I was wondering if the TCA9548A has Dynamic addressing of it's Main I2C line or not? So does the device lock initial address on boot using the strap resistors or will it dynamically change it's address during normal operation if the strap address lines change.

over 5 years ago

0 BOBBY over 5 years ago

TI__Guru 73891 points

Our TCA slave devices (such as the TCA9548A) do NOT latch their slave addresses upon start up. You can change the address after start up.

An app note was published with this idea in mind: http://www.ti.com/lit/pdf/scaa137

Thanks,

-Bobby

0 Keyvan Johnson1 over 5 years ago in reply to BOBBY

Prodigy 20 points

Thanks for you quick response. I read that app note before I posted but it was vague and wanted me to test the part with a scope. I don't have the part on a board or any on hand and thought it would be quicker to just ask in the forums.

Thanks,

Keyvan Johnson

Interface

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TCA9548A: Does the TCA9548A have Dynamic addressing of it's main I2C line or not.