There are a series of Printed Circuit Board Schematic Diagram Inspection Rules should be followed closely when the completion of it, these rules refers to time clock, power supply, high speed signal transmission, low speed interface:
1st of all is for TIME CLOCK:
Whether the clock and high speed signals have the correct termination method
Whether the clock signal is connected in a point-to-point manner
Is the clock level interconnection compatible?
Whether the power supply pin of the clock distribution chip has decoupling capacitors and series magnetic beads
2nd point concerning is for Power Supply:
Is there a decoupling capacitor for each IC power supply pin?
Is the withstand voltage of each capacitor sufficient?
Inductance, resistance, magnetic bead rated power, current meets the requirements
Whether the power supply to be tested has a test point, an isolated power supply resistor or a pad
Is the power supply sequence correct?
Whether the full-page power consumption meets the PCB design requirements (note whether the power supply is a linear power supply)
Whether the power output accuracy meets the requirements of all components
Whether the output current capability exceeds 20% of the load peak current
For a chip with a large dynamic range, does the power supply have sufficient dynamic response capability?
Is the decoupling/storage capacitor of the power supply large enough?
Is the power supply size configuration correct?
3rd is about high speed signal transmission
Whether TX / RX, P / N are connected correctly, you need to understand why the device is connected so, what is the basis
Name the specification (for example, M2C_TX_P)
Whether the PCIE configuration signal is correctly pulled up and down
Whether the coupling capacitor meets the PCB board design requirements, the schematic needs to mark the capacitor placed close to what device
Whether the clock frequency used by high-speed signals meets the requirements
