STC8A8K64D4 Series Manual
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01: DMA_UR3R interrupt priority is level 1 (lower level)
10: DMA_UR3R interrupt priority is level 2 (higher level)
11: DMA_UR3R interrupt priority level is 3 (the highest level)
UR4RIP: DMA_UR4R(UART 4 receive DMA)interrupt priority control bits
00: DMA_UR4R interrupt priority level is 0 (lowest level)
01: DMA_UR4R interrupt priority is level 1 (lower level)
10: DMA_UR4R interrupt priority is level 2 (higher level)
11: DMA_UR4R interrupt priority level is 3 (the highest level)
LCMIP: DMA_LCM(LCM interfaceDMA)interrupt priority control bits
00: DMA_LCM interrupt priority level is 0 (lowest level)
01: DMA_LCM interrupt priority is level 1 (lower level)
10: DMA_LCM interrupt priority is level 2 (higher level)
11: DMA_LCM interrupt priority level is 3 (the highest level)