Hello E2E team,
My customer is drawing schematic of DS90UH940N-Q1 for new automotive project.
Here's couple of questions from the customer.
1. For Immunity against ESD shock, TVS diode on FPD-Link is being considered. Because it's high speed line, the TVS diode with 0.25pF capacitance would be used. Is it okay? What is the capacitance allowed for FPD-Link pin? Any recommendation?
2. Unused pin like GPIO or I2S needs to be connected to external pull-down resistor according to the datasheet. What is the proper value for the pull-down resistor?
Can all unused pins which needs external pulldown resistors be tied to one pull down together? Or, each pin needs its own pulldown resistor?
Please answer. Thank you.