DS90UR910-Q1: Can NOT receive any signal

Kevin Xiong

Part Number: DS90UR910-Q1
Other Parts Discussed in Thread: DS90UR910QEVM, , DS90UR905Q-Q1, ALP

Hi,

I'm using DS90UR905Q-Q1 as serializer and DS90UR910-Q1 as deserializer. The serializer board is made by gerber file from TI's website and the deserializer board is DS90UR910QEVM.

After connected the serializer and deserializer, the PASS and LOCK on DS90UR910-Q1 are always low and there is no any signal on the output. Now I do NOT configure any register, because it says that it is optional in the DS90UR910QEVM guide.

I MUST configue the register in DS90UR905Q-Q1 and DS90UR910-Q1. Is that right? Or is that optional?

If the register must be configured, what registers must be configured?

Thanks.

Kevin Xiong

over 6 years ago

0 Palaniappan Manickam over 6 years ago

TI__Genius 10475 points

Hello,
Is the power applied properly on both boards? What cable are you using to connect the boards up?
You can follow the quick start guide instructions in the EVM user guide. If the power is applied properly and the switches and hardware connections are correct, the LED should light up indicating LOCK.

0 Kevin Xiong over 6 years ago in reply to Palaniappan Manickam

Expert 2340 points

Hi,
The power is OK and the connection is LVDS cable. My question is: Is it a MUST to write the register in serializer and deserializer just for the test?
Thanks.
Kevin Xiong

0 Palaniappan Manickam over 6 years ago in reply to Kevin Xiong

TI__Genius 10475 points

No special register writes should be necessary to get the LOCK to go high. If you are using the proper ALP device profile the default register values should be loaded up properly.

0 Steven(Shenzhen) Shi over 6 years ago in reply to Kevin Xiong

TI__Mastermind 30515 points

Kevin,
What is the video format in your case? and what is cable? if LOCK is hold low, it seems no signal is inputted correctly in UR910.

best regards,
Steven

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DS90UR910-Q1: Can NOT receive any signal