參數(shù)資料
型號: UPD70F3134AYGJ-UEN
廠商: NEC Corp.
英文描述: 32-Bit Single-Chip Microcontrollers
中文描述: 32位單芯片微控制器
文件頁數(shù): 99/99頁
文件大?。?/td> 528K
代理商: UPD70F3134AYGJ-UEN
CHAPTER 5 APPLICATION EXAMPLES
Application Note U17121EJ1V1AN
99
Figure 5-6. IDE_Write_DMA Function
400 0000H
3FF FFFFH
4096 bytes
Descriptor table
500 0000H
4FF FFFFH
700 0000H
6FF FFFFH
600 0000H
5FF FFFFH
000 0000H
IDE HDD
Number of transfer bytes
0000 1000H
Transfer address 0400 0000H
WRITE DMA (Data transfer from SDRAM to IDE HDD)
Bus master transfer of 8 sectors (4096 bytes)
is performed from 400 0000H (SDRAM area)
to LBA0 of IDE HDD.
:
Figure 5-7. IDE_Read_DMA Function
400 0000H
3FF FFFFH
4096 bytes
Descriptor table
500 0000H
4FF FFFFH
600 0000H
5FF FFFFH
700 0000H
6FF FFFFH
000 0000H
IDE HDD
READ DMA (Data transfer from IDE HDD to SDRAM)
Bus master transfer of 8 sectors (4096 bytes)
is performed from LBA0 of IDE HDD to
500 0000H (SDRAM area).
:
Number of transfer bytes
0000 1000H
Transfer address 0500 0000H
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