DS90UB948-Q1: What is the difference pass through with pass through all of I2C?

Ansel Song

Expert 3890 points

Part Number: DS90UB948-Q1

Hi team,

What is the difference pass through with pass through all of I2C? Thanks.

BR.

Ansel Song

over 5 years ago

0 Hamzeh Jaradat over 5 years ago

TI__Guru** 107510 points

Hello Ansel,

Pass Through—This I2C control enables communication with all the remote devices, whose device ID
and corresponding device Alias fields is defined into the local device (Ser or Des).

Pass Through All— This control enables all I2C transaction over the serial link that are not addressing
the local device (Ser or Des).

0 Ansel Song over 5 years ago in reply to Hamzeh Jaradat

TI__Expert 3890 points

Hi Jaradat,

As shown in the below block diagram, if I set pass all in 941 side, does it mean that I do not need to configure the slave (948, MCU, Touch IC）address ?

If not, how to configure register about I2C address, thanks.

Best regards,

Ansel

0 Hamzeh Jaradat over 5 years ago in reply to Ansel Song

TI__Guru** 107510 points

Hi,

Please check this AppNote. there you have all the details (Although it is talking about 913A/914A, but they are the same)

http://www.ti.com/lit/an/snla222/snla222.pdf

Interface

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DS90UB948-Q1: What is the difference pass through with pass through all of I2C?