HD6412350 Hitachi, HD6412350 Datasheet - Page 212

• Manufacturer Part Number: HD6412350
• Description: (HD6412350 / HD6432351) 16-BIT MICROCONTROLLER
• Manufacturer: Hitachi

7.1.2
A block diagram of the DMAC is shown in figure 7-1.
192
Internal interrupts
External pins
Interrupt signals
Legend
DMAWER
DMABCR
DMATCR
Module stop mode can be set
DMACR
ETCR
The initial setting enables DMAC registers to be accessed. DMAC operation is halted by
IOAR
setting module stop mode
MAR
TGI0A
TGI1A
TGI2A
TGI3A
TGI4A
TGI5A
TXI0
RXI0
TXI1
RXI1
ADI
DREQ0
DREQ1
TEND0
TEND1
DACK0
DACK1
DEND0A
DEND0B
DEND1A
DEND1B
Block Diagram
: DMA write enable register
: DMA terminal control register
: DMA band control register (for all channels)
: DMA control register
: Memory address register
: I/O address register
: Executive transfer counter register
Data buffer
Control logic
Figure 7-1 Block Diagram of DMAC
DMABCR
DMAWER
DMATCR
DMACR0A
DMACR0B
DMACR1A
DMACR1B
Internal address bus
Internal data bus
Address buffer
Processor
MAR0A
MAR0B
MAR1A
MAR1B
ETCR0A
ETCR0B
ETCR1A
ETCR1B
IOAR0A
IOAR0B
IOAR1A
IOAR1B