Signal integrity (SI) refers to the quality of the signal on the signal line, that is, the ability of the signal to respond with the correct timing and voltage in the circuit. If the signal in the circuit can reach the receiver with the required timing, duration, and voltage amplitude, then it can be determined that the circuit has better signal integrity. Conversely, when the signal does not respond properly, a signal integrity problem occurs. With the use of high-speed devices and more and more high-speed digital system designs, the system data rate, clock rate, and circuit density are constantly increasing. In this design, the system's fast-slope transients and operating frequencies are high, and cables, interconnects, printed boards (PCBs), and silicon chips will exhibit very different behaviors from low-speed designs, namely signal integrity issues. Signal integrity problems can cause or directly bring such things as signal distortion, timing errors, incorrect data, addre

1) IPC-ESD-2020 The joint standard for the development of electrostatic discharge control programs. Includes the design, establishment, implementation, and maintenance necessary for electrostatic discharge control procedures. Provide guidance for handling and protection during electrostatic discharge sensitive periods based on the historical experience of certain military and commercial organizations. 2) IPC-SA-61A Semi-aqueous cleaning manual after welding. Including all aspects of semi-aqueous cleaning, including chemical, production residues, equipment, processes, process control, and environmental and safety considerations. 3) IPC-AC-62A Hydration cleaning manual after welding. Describe manufacturing residues, types and properties of aqueous cleaners, processes, equipment and processes for aqueous cleaning, quality control, environmental control, and employee safety, and the cost of cleanliness measurement and determination 4) IPC-DRM-40E Desktop reference manual for