HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 200

• Manufacturer Part Number: HD6433044
• Description: (HD64 Series) Hitachi Single-Chip Microcomputer
• Manufacturer: Hitachi Semiconductor

8.1.2 Block Diagram
Figure 8-1 shows a DMAC block diagram.
Internal
interrupts
Interrupt
signals
Legend
DTCR:
MAR:
IOAR:
ETCR:
Data transfer control register
Memory address register
I/O address register
Execute transfer count register
DEND0A
DEND0B
DEND1A
DEND1B
DREQ0
DREQ1
TEND0
TEND1
IMIA0
IMIA1
IMIA2
IMIA3
RXI0
TXI0
Data buffer
Control logic
Figure 8-1 Block Diagram of DMAC
DTCR0A
DTCR0B
DTCR1A
DTCR1B
Internal address bus
Internal data bus
Channel
Channel
186
0
1
Channel
Channel
Channel
Channel
0A
0B
1A
1B
Arithmetic-logic unit
Address buffer
MAR0A
MAR0B
MAR1A
MAR1B
ETCR0A
ETCR0B
ETCR1A
ETCR1B
IOAR0A
IOAR0B
IOAR1A
IOAR1B