參數(shù)資料
型號(hào): μPDPD30101
廠商: NEC Corp.
英文描述: 64-Bit Micro[rocessor(64位微處理器)
中文描述: 64位微[rocessor(64位微處理器)
文件頁數(shù): 43/97頁
文件大?。?/td> 409K
代理商: ΜPDPD30101
μ
PD30101
42
7. DCU (DMA CONTROL UNIT)
7.1 General
The DCU controls the DMA operation. It controls the DMA requests from the peripheral units (SIU, KIU, PIU, and
AIU) and the acknowledge signal from the BCU that performs bus arbitration, and enables or disables the DMA operation.
The priorities of the DMA requests from the respective peripheral units are as follows:
AIU > SIU reception > SIU transmission > PIU > KIU
Table 7-1. DCU Registers
Symbol
Function
DMARSTREG
DMA reset register
DMAIDLEREG
DMA status register
DMASENREG
DMA enable register
DMAMSKREG
DMA mask register
DMAREQREG
DMA request register
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