Hardware Design Precautions Hardware Design Precautions 1 Fully understand the design requirements of all parties and determine the appropriate solution. When starting a hardware development project, the original driving force will come from many aspects, such as market needs, needs based on the entire system architecture, functional implementation needs of the application software department, needs to improve certain aspects of the system, etc. Therefore, as a hardware system designer, you must take the initiative to understand the needs of various aspects, and combine them to propose the most appropriate hardware solution. For example, the original driving force of Project A came from a high-level software team within the company. They found in practice that the IP forwarding capabilities of the original processor board could not meet the requirements, which would cause great inconvenience to the configuration and use of the system, so they proposed the need for new hardware. According to this goal, two high-performance network processors were selected in the hardware solution, and then in-depth communication with software designers was required to determine the memory size, internal structure, number and type of external interfaces and debugging interfaces, etc. For example, software personnel like to completely separate the control signaling channel and the data channel, so careful consideration should be given when determining the direction of internal data. At the beginning of the project, many discussion meetings need to be held. All relevant departments should be invited to participate as much as possible. There are three benefits. First, we can fully understand everyone\'s needs to avoid missing important functions in the system design. Second, we can let each department understand the situation of the project and prepare for time and personnel collaboration in advance. Third, from the emotional point of view, when each department is involved at the beginning of the design, the project becomes a common fruit of everyone\'s hard work, which will be cared for and well cooperated by everyone, which is very helpful for completing the work. 2. Issues to pay attention to in schematic design There should be \"take-it-ism\" in schematic design. Nowadays, chip manufacturers can generally provide schematics of reference designs, so we should try to use these resources as much as possible, and make some of our own play on the basis of fully understanding the reference design. After the main chip is selected, the most critical peripheral design includes power supply, clock and interconnection between chips. Power supply is the basis for ensuring the normal operation of the hardware system. The design should be analyzed in detail: the power input that the system can provide; the power output that the single board needs to generate; the current size that each power supply needs to provide...
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