NEC V850E/PH2, User Manual

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Chapter 6 DMA Functions (DMA Controller)
User’s Manual U16580EE3V1UD00
Figure 6-8: Initialization of DMA Transfer for A/D Conversion Result
Remark: n = 0, 1 (number of ADC channel)
x = n (number of DMA channel)
Initialization of DMA transfer for
A/D conversion result of ADCn
(DMA channel 0 or 1)
Set up A/D conversion scan range in the
ADMn2 register
Set up the MARx register with destination
start address within iRAM in
Specify the DMA transfer count in the
DTCRx register (1 to 256)
Enable DMA transfer channel x:
DEx bit = 1
Enable operation of A/D converter n:
ADCEn bit = 1
ADCSn bit = 1?
Disable operation of A/D converter n:
ADCEn bit = 0
End of initialization
Clear status bit of DMA channel x:
DMASx bit = 0
ADCEn bit = 1?
yes
no
yes
no