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Original question:

[TDA4M] Request high speed impedance line design guide in TDA4M Processor. (MIPI CSI, SGMII, RGMII, USB, DP, MMC etc..)

TDA4 High speed interface layout

Tony Tsai
Prodigy 110 points

Hello,

Regarding the High speed differential signal routing guidance: TDA4 Spec suggest reference SPRAAR7H this document, but I have some question need your help to clarify.

1. Display port of impedance and max trace length

2. CSI of impedance and max trace length

3. DSI of impedance and max trace length

4. RGMII of impedance and max trace length

5. CAN of impedance and max trace length

6. OSPI  of impedance and max trace length

Best Regard,

Tony

  • 0
    TI__Guru 55995 points

    1. Display port of impedance and max trace length

    100-ohm differential impedance, max length ~4000mils

    2. CSI of impedance and max trace length

    100-ohm differential impedance, 50-ohm single ended impedance, max length ~10,000mils

    3. DSI of impedance and max trace length

    100-ohm differential impedance, 50-ohm single ended impedance, max length ~10,000mils

    4. RGMII of impedance and max trace length

    50-ohm single ended impedance, max length not spec'd.  Recommend ~4000mils

    5. CAN of impedance and max trace length

    50-ohm single ended impedance, max length not spec'd.  Recommend ~5000mils

    6. OSPI  of impedance and max trace length

    50-ohm single ended impedance, max length ~3000mils