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參數(shù)資料
| 型號： | SMC032BFY6E |
| 廠商： | NUMONYX |
| 元件分類： | PROM |
| 英文描述： | 4M X 8 FLASH 3.3V PROM CARD, 300 ns, UUC50 |
| 封裝： | LEAD FREE, CARD-50 |
| 文件頁數(shù)： | 63/90頁 |
| 文件大?。?/td> | 1863K |
| 代理商： | SMC032BFY6E |
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CF-ATA command description
SMCxxxBF
10.10
Read DMA command (C8h)
This command uses multi-word DMA mode to read from 1 to 256 sectors as specified in the
sector count register. If the sector count is set to ‘0’, 256 sectors will be read by issuing a
Read DMA command.
Data transfer begins at the sector specified in the sector number register. When the Read
DMA command is issued, the CompactFlash card asserts BSY, and transfers all or part of
the sector data in the buffer. The card can then set DRQ and clear BSY, although it is not
required.
The card asserts DMARQ when data are available to be transferred. The host then reads
the 512*sector-count bytes of data from the card using DMA protocol. When DMARQ is
asserted, the host asserts -DMACK to notify it is ready to transfer data, and asserts -IORD
once for each 16-bit word to be transferred.
Interrupts are not generated for each sector transfer, but when all sectors have been
transferred or when an error occurred during the operation.
An abort error is returned by the card when a Read DMA command is sent by the host and
the 8-bit transfer mode has been enabled by the Set Features command.
Table 60 defines the Read DMA command byte sequence.
Table 60.
Read DMA
Bit
7
6
5432
1
0
Command (7)
C8h
C/D/H (6)
LBA
Drive
Head (LBA 27-24)
Cyl High (5)
Cylinder High (LBA 23-16)
Cyl Low (4)
Cylinder Low (LBA 15-8)
Sect Num (3)
Sector number (LBA 7-0)
Sect Cnt (2)
Sector count
Feature (1)
X
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相關代理商/技術(shù)參數(shù) |
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| SMC04-5-L | 制造商:ELDECO 制造商全稱:ELDECO 功能描述:Standard : UL - IEC 300V - 320V 15A - 17.5A |
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| SMC04GBF | 制造商:NUMONYX 制造商全稱:Numonyx B.V 功能描述:32MByte, 64MByte, 128MByte, 256MByte, 512MByte, 1GByte, 2GByte, and 4GByte 3.3/5V Supply CompactFlash⑩ Card |
| SMC04GBFI6E | 制造商:Micron Technology Inc 功能描述:4GB COMPACT FLASH CARD IND GRADE IND TEMP - Trays |
| SMC04GBFK6E | 功能描述:MEMORY CARD 4GB COMPACT FLASH RoHS:是 類別:存儲卡，模塊 >> 存儲器，PC 卡 系列:- 標準包裝:30 系列:- 存儲容量:8GB 存儲器類型:存儲卡 - Extreme III SD? |
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