TUSB1004: About the CEQ and SSEQ setting.

Bruce Dai

Part Number: TUSB1004

Hi AE,

The current Pre-Channel total and Post-Channel total are as follows.
Could you help recommend the appropriate settings for CEQ1, CEQ0 and SSEQ1, SSEQ0?

project	CEQ1	CEQ0	SSEQ1	SSEQ0	Pre-Channel total	Post-Channel total
TUSB1004RNQR	F	F	F	F	6291 mils	3732mils
	10.7dB		11.7dB

Best Regards

7 days ago

+1 Vishesh Pithadiya 6 days ago

TI__Mastermind 44731 points

Hi,

Based off of the trace lengths provided.

The SSEQ should be in the range of settings 4-6

The EQ setting should be in the range of settings 1-4

The assumption for the loss is 0.2 dB/inch/GHz for FR4. At 10Gbps we assume approx. 1dB per inch of trace.

+1 Bruce Dai 6 days ago in reply to Vishesh Pithadiya

Intellectual 760 points

Hi AE,

Thanks for your reply

Can we enable AEQ to automatically tune the post-channel?

Best Regards

+1 Vishesh Pithadiya 5 days ago in reply to Bruce Dai

TI__Mastermind 44731 points

Yes, you can enable AEQ by I2C or GPIO

GPIO enable:

I2C enable:

Interface

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TUSB1004: About the CEQ and SSEQ setting.