HD6417021 Hitachi Semiconductor, HD6417021 Datasheet - Page 186

• Manufacturer Part Number: HD6417021
• Description: SuperH RISC engine
• Manufacturer: Hitachi Semiconductor

DMAOR: DMA operation register
SARn: DMA source address register
DARn: DMA destination address register
TCRn: DMA transfer count register
CHCRn: DMA channel control register
DEIn: DMA transfer-end interrupt request to CPU.
n: 0–3
External device
External device
DREQ0, DREQ1
acknowledge)
DACK0, DACK1
External
External
(memory
mapped)
ROM
RAM
(with
peripheral
On-chip
module
On-chip
On-chip
ROM
RAM
DEIn
SCI
ITU
Bus controller
Figure 9.1 DMAC Block Diagram
Bus interface
Register
Request
Iteration
Start-up
control
control
control
priority
control
DMAOR
CHCRn
DARn
SARn
TCRn
HITACHI 171
DMAC