DS90UB947-Q1: Disabled repeater mode

Roy Chou1

Part Number: DS90UB947-Q1
Other Parts Discussed in Thread: ALP

Hi Team,

In 947 MODE_SEL0 pin, I follow the RATIO=0.56(RH=82.5k ; RL=105k). But I see the ALP information of 947. The repeater mode is still enable.

Could you let me know how to disable the function?

Roy

over 5 years ago

0 Casey McCrea over 5 years ago

TI__Guru** 103215 points

Hello Roy,

Is this using the 947 EVM or a custom board? Can you please try pressing the PDB button on the EVM to reset the device and then check again? What does register 0x13 read back?

Best Regards,

Casey

0 Roy Chou1 over 5 years ago in reply to Casey McCrea

TI__Genius 17160 points

Hi Casey,

We are using custom board. the 0x13 register content is 0x8C.

Regards,

Roy

0 Casey McCrea over 5 years ago in reply to Roy Chou1

TI__Guru** 103215 points

Roy,

Thank you, where do you see in ALP that repeater mode is enabled?

Best Regards,

Casey

0 Roy Chou1 over 5 years ago in reply to Casey McCrea

TI__Genius 17160 points

Hi Casey,

The ALP information shows the repeater mode is enabled.

Roy

0 Casey McCrea over 5 years ago in reply to Roy Chou1

TI__Guru** 103215 points

Hello Roy,

I can observe the same issue on my EVM setup as well and it looks like it may be an ALP issue. Please give us a few days to check it out and see why this is happening

Best Regards,

Casey

0 Vishy Viswanathan over 5 years ago in reply to Casey McCrea

TI__Mastermind 21685 points

Hello Roy,

I confirm this is an ALP issue: For the selected MODE_SEL0 settings, you are seeing in register 0x13 the correct 3-bit mode0 value = 4. And for this mode value 947 repeater mode should have been disabled. But instead it is enabled. This behavior is correct for 927 but not 947.

We will fix this issue in the next ALP PROFILE-UPDATE-RELEASE. Please ignore the information tab message on this repeater status and use the following Data Sheet table to confirm the mode selected

Thanks,

Vishy

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DS90UB947-Q1: Disabled repeater mode