DS90UB941AS-Q1: SER_ALIAS_ID

Ryan Wang

Part Number: DS90UB941AS-Q1

Dear expert,

For 953+954 system, we need to assign SER_ALIAS_ID(0x5C) for 953. But for 941+948, there is no such kind of register. Why it that?

Thanks

over 4 years ago

0 Ben Dattilo over 4 years ago

TI__Mastermind 25765 points

Hi,

In the 941+948 system, you can use the SLAVE_ALIAS for the same purpose as the SER_ALIAS_ID in the 953+954 system.

Regards,

Ben

0 Ryan Wang over 4 years ago in reply to Ben Dattilo

TI__Expert 7435 points

Ben,

SLAVE_ALIAS is for external device attached to 953 or 948.

SER_ALIAS_ID is for 953 itself assuming I2C host is in 954 side.

But there is no SER_ALIAS_ID for 948 assuming I2C host is in 941 side.

Why is that?

0 Ben Dattilo over 4 years ago in reply to Ryan Wang

TI__Mastermind 25765 points

Hi,

Since it is assumed the DES will be used with a SER, and the device address of the SER is determined in the 941 register 0x00, it is not necessary to have a dedicated SER_ALIAS_ID register, and therefore this register does not exist in the 948. Any needed alias ID can be programmed in the SLAVE_ALIAS registers.

Regards,

Ben

0 Ryan Wang over 4 years ago in reply to Ben Dattilo

TI__Expert 7435 points

Thanks, Ben

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DS90UB941AS-Q1: SER_ALIAS_ID