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TDP158: Looking for a redriver for HDMI2.0
Part Number: TDP158
What is the maximum trace length and trace impedance for below lines?
L1: GPU to cap
L2: Cap to TPD158
L3: TPD158 to HDMI connector
And any layout guides for TDP158?
The DP158 equalizer can compensate up to 15.5dB loss on the input side. Please take a look at section 9.2.3 and you can see the DP158 is able to open up the eye after a 20in 4mil trace. On the connector side, it has a 3.5dB pre-emphasis.
Please take a look at the GPU and see if the GPU has a specific requirement on the differential impedance. If not, please follow the HDMI spec impedance of 100ohm +/- 15%.
Attached is the HDMI layout design guide.
5706.Texas Instruments HDMI Design Guide.pdf
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