參數(shù)資料
型號(hào)： HFDOM44KR256
廠商： Hanbit Electronics Co.,Ltd.
英文描述： 40Pin Flash Disk Module Min.8MB ~ Max.1GB, True IDE Interface Mode, 3.3V / 5.0V Operating
中文描述： 40Pin盤模塊Min.8MB?Max.1GB，真正的IDE接口模式，3.3 / 5.0V工作
文件頁(yè)數(shù)： 27/30頁(yè)
文件大小： 246K
代理商： HFDOM44KR256
HANBit HFDOM44KRxxx
URL:www.hbe.co.kr 27 / 30 HANBit Electronics Co., Ltd.
Rev. 1.0 (December, 2004)
Bit->
7
6
5
4
3
2
1
0
Command(7)
C5h
C/D/H(6)
X
LBA
X
Drive
Head
Cyl High(5)
Cylinder High
Cyl Low(4)
Cylinder Low
Sec Num(3)
Sector Number
Sec Cnt(2)
Sector Count
Feature(1)
X
Write Multiple Command
Note
: The current revision of the CompactFlash Storage Card only supports a block count of 1 as indicated in the
Identify Drive Command information. This command is provided for compatibility with future products which may
support a larger block count.
This command is similar to the Write Sectors command. The CompactFlash Storage Card sets BSY within 400
nsec of accepting the command. Interrupts are not presented on each sector but on the transfer of a block which
contains the number of sectors defined by Set Multiple.
Command execution is identical to the Write Sectors operation except that the number of sectors defined by the
Set Multiple command is transferred without intervening interrupts.
DRQ qualification of the transfer is required only at the start of the data block, not on each sector. The block count
of sectors to be transferred without intervening interrupts is programmed by the Set Multiple Mode command,
which must be executed prior to the Write Multiple command.
When the Write Multiple command is issued, the Sector Count Register contains the number of sectors (not the
number of blocks or the block count) requested. If the number of requested
sectors is not evenly divisible by the sector/block, as many full blocks as possible are transferred, followed by a
final, partial block transfer. The partial block transfer is for n sectors, where:
n = remainder ( sector count / block count ). If the Write Multiple command is attempted before the Set Multiple
Mode command has been executed or when Write Multiple commands are disabled, the Write Multiple operation
will be rejected with an aborted command error.
Errors encountered during Write Multiple commands are posted after the attempted writes of the block or partial
block transferred. The Write command ends with the sector in error, even if it is in the middle of a block.
Subsequent blocks are not transferred in the event of an error. Interrupts are generated when DRQ is set at the
beginning of each block or partial block.
The Command Block Registers contain the cylinder, head and sector number of the sector where the error
occurred and the Sector Count Register contains the residual number of sectors that need to be transferred for
successful completion of the command, e.g., each block has 4 sectors, a request for 8 sectors is issued and an
error occurs on the third sector. The Sector Count Register contains 6 and the address is that of the third sector.
Write Multiple without Erase –
CDh
Bit->
7
6
5
4
3
2
1
0
Command(7)
CDh
C/D/H(6)
X
LBA
X
Drive
Head
Cyl High(5)
Cylinder High
Cyl Low(4)
Cylinder Low
Sec Num(3)
Sector Number
Sec Cnt(2)
Sector Count
Feature(1)
X
Write Multiple without Erase
This command is similar to the Write Multiple command with the exception that an implied erase before write
operation is not performed. The sectors should be pre-erased with the Erase Sector(s) command before this
command is issued.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HFDOM44KR384 制造商:HANBIT 制造商全稱:Hanbit Electronics Co.,Ltd 功能描述:40Pin Flash Disk Module Min.8MB ~ Max.1GB, True IDE Interface Mode, 3.3V / 5.0V Operating
HFDOM44KR512 制造商:HANBIT 制造商全稱:Hanbit Electronics Co.,Ltd 功能描述:40Pin Flash Disk Module Min.8MB ~ Max.1GB, True IDE Interface Mode, 3.3V / 5.0V Operating
HFDOM44KRXXX 制造商:HANBIT 制造商全稱:Hanbit Electronics Co.,Ltd 功能描述:40Pin Flash Disk Module Min.8MB ~ Max.1GB, True IDE Interface Mode, 3.3V / 5.0V Operating
HFDOM-44LX 制造商:HANBIT 制造商全稱:Hanbit Electronics Co.,Ltd 功能描述:44Pin Flash Disk Module for 128MB,192M, 256M, True IDE Interface Mode, 5.0V
HFDOM-44LX128 制造商:HANBIT 制造商全稱:Hanbit Electronics Co.,Ltd 功能描述:44Pin Flash Disk Module for 128MB,192M, 256M, True IDE Interface Mode, 5.0V
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