參數(shù)資料
型號: MB91121PFV
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 50 MHz, RISC MICROCONTROLLER, PQFP120
封裝: PLASTIC, LQFP-120
文件頁數(shù): 32/100頁
文件大小: 2316K
代理商: MB91121PFV
MB91121 Series
DS07-16303-4E
37
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
enhanced 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
Block diagram
DREQ0 to DREQ2
DACK0 to DACK2
EOP0 to EOP2
Interrupt request
DPDP
DACSR
DATCR
BLK DEC
INC / DEC
BLK
DMACT
SADR
DADR
3
8
5
Sequencer
Edge/level
detection circuit
Inner resource
transfer request
Data buffer
Switcher
Data
bus
Mode
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