HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 220

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

Normal Mode
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Block Transfer Mode: One block of a specified size is transferred per request. A designated
number of block transfers are executed. At the end of each block transfer, one address is restored
to its initial value. When the designated number of blocks have been transferred, a CPU interrupt
can be requested. Both addresses are 24-bit addresses.
Auto-request
The DMAC is activated by register setup alone, and continues executing transfers until the
designated number of transfers have been completed. A CPU interrupt can be requested at
completion of the transfers. Both addresses are 24-bit addresses.
— Cycle-steal mode
— Burst mode
External request
One byte or word is transferred per request. A designated number of these transfers are
executed. A CPU interrupt can be requested at completion of the designated number of
transfers. Both addresses are 24-bit addresses.
The bus is released to another bus master after each byte or word is transferred.
Unless requested by a higher-priority bus master, the bus is not released until the
designated number of transfers have been completed.
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