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AFE58JD48EVM: How to Change LMK Clock rate

Gulla Krishna Mohan

Prodigy 20 points

Part Number: AFE58JD48EVM
Other Parts Discussed in Thread: AFE58JD48

Tool/software:

Hi TI Team,
I am using AFE58JD48 ADC Chip, I have not found any LMK related configuration tab in the AFE58JD48_EVM GUI so i am not able to change the clock rates.
But there are some Default Configurations such as JESD: 120M 8L Subclass 1, This Default configuration Lane rate is 4.8 Gbps.
My Transceiver is Running at 5 Gbps, Can you share me the chip configurations for 5Gbps ?

0 Sachin H K 3 months ago

TI__Expert 5795 points

Hi,

May I know why do you need exactly 5 GBPS ? One way to achieve this is to feed external input clock to get this particular speed .

0 Gulla Krishna Mohan 3 months ago in reply to Sachin H K

Prodigy 20 points

We need 5GBPS because, our transceivers works only at 5GBPS, so we want to test our transceivers at 5GBPS.

0 Sachin H K 2 months ago in reply to Gulla Krishna Mohan

TI__Expert 5795 points

What is the constraint setting your speed to exactly 5GBPS ?

As discussed other option is to give the clock externally to EVM to get that lane rate .