- 您现在的位置：买卖IC网 > Sheet目录250 > SFCF2048H1BO2TO-I-M0-523-SMA (Swissbit NA Inc)FLASH SLC UDMA/MDMA/PIO 2G
Table 67: Initialize Drive Parameter s
Task File Register
7
6
5
4
3
2
1
0
COMMAND
91h
DRIVE/HEAD
nu
nu
nu
D
Number of Heads minus 1
CYLINDER HI
CYLINDER LOW
SECTOR NUM
SECTOR COUNT
FEATURES
nu
nu
nu
Number of Sectors per Track
nu
10.10 NOP (00h)
This command always fails with the CompactFlash Memory Card returning command aborted. Table 68 defines the
Byte sequence of the NOP command.
Table 68: NOP
Task File Register
7
6
5
4
3
2
1
0
COMMAND
00h
DRIVE/HEAD
nu
nu
nu
D
nu
CYLINDER HI
CYLINDER LOW
SECTOR NUM
SECTOR COUNT
FEATURES
nu
nu
nu
nu
nu
10.11 Read Buffer (E4h)
The Read Buffer command enables the host to read the current contents of the Card’s sector buffer. This command
has the same protocol as the Read Sector(s) command. Table 69 defines the Read Buffer command Byte sequence.
Table 69: Read buffer
Task File Register
7
6
5
4
3
2
1
0
COMMAND
E4h
DRIVE/HEAD
nu
nu
nu
D
nu
CYLINDER HI
CYLINDER LOW
SECTOR NUM
SECTOR COUNT
FEATURES
nu
nu
nu
nu
nu
10.12 Read DMA (C8h)
This command uses DMA mode to read from 1 to 256 sectors as specified in the Sector Count register. A sector
count of 0 requests 256 sectors. The transfer begins at the sector specified in the Sector Number Register. When
this command is issued the CompactFlash Storage Card sets BSY, puts all or part of the sector of data in the buffer.
The Card is then permitted, although not required, to set DRQ, clear BSY. The Card asserts DMAREQ while data is
available to be transferred. The Card asserts DMAREQ while data is available to be transferred. The host then reads
the (512 * sector-count) bytes of data from the Card using DMA. While DMAREQ is asserted by the Card, the Host
asserts – DMACK while it is ready to transfer data by DMA and
asserts – IORD once for each 16 bit word to be transferred to the Host.
Interrupts are not generated on every sector, but upon completion of the transfer of the entire number of sectors
to be transferred or upon the occurrence of an unrecoverable error.
At command completion, the Command Block Registers contain the cylinder, head and sector number of the last
sector read. If an error occurs, the read terminates at the sector where the error occurred. The Command Block
Registers contain the cylinder, head, and sector number of the sector where the error occurred. The amount of
data transferred is indeterminate.
When a Read DMA command is received by the Card and 8 bit transfer mode has been enabled
by the Set Features command, the Card shall return the Aborted error.
Swissbit AG
Industriestrasse 4
Swissbit reserves the right to change products or specifications without notice.
Revision: 1.20
CH-9552 Bronschhofen
Switzerland
www.swissbit.com
industrial@swissbit.com
C-320_data_sheet_CF-HxBO_Rev120.doc
Page 67 of 101
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
SFCF4096H4BK2SA-I-QT-553-SMA
FLASH SLC UDMA/MDMA/PIO 4G
SFCF64GBH2BU4TO-I-NU-517-STD
FLASH SLC UDMA/MDMA/PIO 64GB
SFN08B4702CBQLF7
RES ARRAY 47K OHM 7 RES 8-DFN
SFP1050-12BG
FRONT END AC/DC 1050W 12V
SFP450-12BG
PWR SUP 450W 12V 36.6A W/STANDBY
SFSD1024N1BN1TO-I-DF-151-STD
FLASH MICRO SD CARD IND S-200 1G
SFSD2048L1BN2TO-I-DF-151-STD
FLASH SECURE DGTL CARD SD 2G
SFSD4096L1BN2TO-I-Q2-141-STD
FLASH SECURE DGTL CARD SDHC 4G
相关代理商/技术参数
SFCF2048H1BO2TO-I-M0-533-ZP1
制造商:SWISSBIT NA INC 功能描述:FLASH
SFCF2048H1BO2TO-I-M0-543-SMA
制造商:SWISSBIT NA INC 功能描述:FLASH
SFCF2048H2BU2TO-C-MS-527-STD
制造商:SWISSBIT NA INC 功能描述:FLASH
SFCF2048H2BU2TO-I-MS-517-STD
功能描述:FLASH SLC UDMA/MDMA/PIO 2GB RoHS:是 类别:存储卡，模块 >> 存储器，PC 卡 系列:C-440 标准包装:30 系列:- 存储容量:8GB 存储器类型:存储卡 - Extreme III SD?
SFCF2048H2BU2TO-I-MS-527-STD
制造商:SWISSBIT NA INC 功能描述:FLASH
SFCF2048H4BK1SA-C-QT-553-SMA
制造商:SWISSBIT NA INC 功能描述:FLASH
SFCF2048H4BK1SA-I-QT-553-SMA
功能描述:FLASH SLC UDMA/MDMA/PIO 2G RoHS:是 类别:存储卡，模块 >> 存储器，PC 卡 系列:C-300 标准包装:30 系列:- 存储容量:8GB 存储器类型:存储卡 - Extreme III SD?
SFCF2048H4BK2SA-C-DS-553-SMA
制造商:SWISSBIT NA INC 功能描述:FLASH SLC UDMA/MDMA/PIO 2G