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Original question:

SN65DPHY440SS: Review of Ti sn65dphy440ss Mipi (DSI) schematic design

SN65DPHY440SS: sn65dphy440ss is used as Mipi (DSI) extension

Jimmy Huang
Genius 4095 points

Part Number: SN65DPHY440SS

Hello：

My client uses sn65dphy440ss as Mipi (DSI) extension, the schematic diagram has been confirmed before in E2E.

Please help confirm whether the following four signals use pull-up resistance or pull-down resistance???? Thank you！！！

  • 0
    TI__Guru**** 192561 points

    Hi,

    I would follow the datasheet recommendation and have 10k pullup/pulldown option on EQ, ERC, PRE_CFG1, VSADJ_CFG0.

    You will then have to populate either pullup or pulldown resistor to tune the output signal quality. 

    In the I2C mode, EQ is SCL and ERC is SDA, you will only need pullup (2k or 4.7k) depends on the I2C primary driving strength.

    Thanks

    David