参数资料
型号: MB91108PFV
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 50 MHz, RISC MICROCONTROLLER, PQFP120
封装: PLASTIC, LQFP-120
文件页数: 30/96页
文件大小: 1342K
代理商: MB91108PFV
MB91107/108
36
2.
DMA Controller (DMAC)
The DMA controller is a module embedded in FR family devices, and performs DMA (direct memory access)
transfer.
DMA transfer performed by the DMA controller transfers data without intervention of CPU, contributing to en-
hanced performance of the system.
8 channels
Mode: single/block transfer, burst transfer and continuous transfer: 3 kinds of transfer
Transfer all through the area
Max. 65536 of transfer cycles
Interrupt function right after the transfer
Selectable for address transfer increase/decrease by the software
External transfer request input pin, external transfer request accept output pin, external transfer complete
output pin three pins for each
(1) Register configuration
DMAC (DMAC internal registers)
RAM (DMA descriptor)
Address
bit 31
bit 0
DMAC parameter descriptor point
000200H
DPDP
DMAC control status register
000204H
DACSR
DMAC pin control register
000208H
DATCR
bit 31
bit 0
DPDP
+ 0H
DMA
ch-0
descriptor
DPDP
+ 0CH
DMA
ch-1
descriptor
:
DPDP
+ 54H
DMA
ch-7
descriptor
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