Hardware design guide and checklists Hardware Design Guidelines and Checklists Contents 1 Purpose and significance 42 Schematic design points 43 Schematic check points 84 PCB check points 10 Purpose and significance The main purposes of this article are as follows: 1. Discuss some important points in hardware schematic design, which are the summary of previous design experience. Designing schematics according to these principles can make the design more standardized and correct. 2. Standardize some key checkpoints during schematic review. According to these checkpoints, some low-level errors can be avoided, and the original intention of the engineer\'s design is completely consistent with the drawn schematic to the greatest extent. 3. Standardize some key checkpoints during PCB Review, which can avoid low-level mistakes made by engineers on PCB to the greatest extent. The following symbols represent the meaning: • [pic] indicates the requirements that must be followed • [pic] indicates the requirements that are strongly recommended • [pic] indicates the recommended requirements Engineers can • [pic] confirm this check item • [pic] confirm that the check item cannot be met Schematic Design Points 1) For the peripheral circuit design of the chip, try to use the reference design and the hardware design guide of the chip 2) Try to copy the schematics that others have verified 3) The clock and high-speed signals must have the correct termination method. If the requirements are not high, the source end series method can be used 4) The clock signal should be connected point-to-point as much as possible 5) The clock of the high-speed parallel bus should be sent from the same chip 6) If there is enough PCB space, each power pin must have a decoupling capacitor. And close to the power pin 7) Try to use oscillators instead of crystals. 8) For clock distribution chips, use Dis with PLL function...
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