DS90UB925Q-Q1: about the repeater application questions

Kailyn Chen

Hello,

Our customer's application is as following. The DS90UB925+DS90UB926 are used as repeater, now the question is the INTB is always active low.

1) if the I2C address of UB926 is 0X1C, the host couldn't read the address of 0X58, but sometimes could read the data of the device attached of UH947.

2) if the I2C address of UB926 is 0X58, the host could read the data of UH948 , but the INTB is always low.

So could you please give me some advice?

Best regards

Kailyn

over 6 years ago

0 Casey McCrea over 6 years ago

TI__Guru** 103215 points

Hello Kailyn,

0x1C is not an available I2C address for 926. Please see the datasheet table 10 for available addresses. Can you please clarify what you mean by the first question?

If the customer following the programming instructions for INTB in the 947 and 925 datasheets? Can you please share the register programming for this system?

Best Regards,

Casey