首先，通过理论推导，得到了LCDC总线带宽占用率的计算公式，并给出了实际的软硬件测试平台。
Firstly, after the theory discursion, the expressions of bus bandwidth occupancy of LCDC are given, and the practical software and hardware test platform is present.
同时，该设计还使用片上缓存方式，降低了系统总线的占用率。
In the meantime, the module takes advantage of on-chip cache to reduce the pressure on the system buses.
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