參數(shù)資料
型號(hào)： HFDOM44S3RXXX
廠商： Hanbit Electronics Co.,Ltd.
英文描述： 44Pin Flash Disk Module Min.16MB ~ Max.512MB, True IDE Interface
中文描述： 44Pin盤模塊Min.16MB?Max.512MB，真IDE接口
文件頁(yè)數(shù)： 11/30頁(yè)
文件大小： 309K
代理商： HFDOM44S3RXXX
HANBit HFDOM44S3Rxxx
URL:www.hbe.co.kr 11 / 30 HANBit Electronics Co., Ltd.
Rev. 1.0 (January, 2005)
the Status register does clear a pending interrupt, while reading the Alternate Status register does not. The status
bits are described as follows:
D7
D6
D5
D4
D3
D2
D1
D0
BUSY
RDY
DWF
DSC
DRQ
CORR
0
ERR
Status & Alternate Status Register
Bit 7 (BUSY
): the busy bit is set when the CompactFlash Storage Card has access to the
command buffer and registers and the host is locked out from accessing the command
register and buffer. No other bits in this register are valid when this bit is set to a 1.
Bit 6 (DRDY
): DRDY indicates whether the device is capable of performing CompactFlash Storage Card
operations. This bit is cleared at power up and remains cleared until the CompactFlash Storage Card is ready to
accept a command.
Bit 5 (DWF
): This bit, if set, indicates a write fault has occurred.
Bit 4 (DSC
): This bit is set when the CompactFlash Storage Card is ready.
Bit 3 (DRQ
): The Data Request is set when the CompactFlash Storage Card requires the
information to be transferred either to or from the host through the Data register.
Bit 2 (CORR
): This bit is set when a Correctable data error has been encountered and the data has been corrected.
This condition does not terminate a multi-sector read operation.
Bit 1 (IDX
): This bit is always set to 0.
Bit 0 (ERR
): This bit is set when the previous command has ended in some type of error. The bits in the Error
register contain additional information describing the error. It is recommended
that media access commands (such as Read Sectors and Write Sectors) that end with an
error condition should have the address of the first sector in error in the command block
registers.
9) Device Control Register( Address – 3F6h[376h]; Offset Eh)
This register is used to control the CompactFlash Storage Card interrupt request and to issue an ATA soft reset to
the card. This register can be written even if the device is BUSY. The bits are defined as follows:
D&
D6
D5
D4
D3
D2
D1
D0
X
X
X
X
1
SW Rst
-IEn
0
Device Control Register
Bit
7: this bit is an X (don’t care).
Bit
6: this bit is an X (don’t care).
Bit
5: this bit is an X (don’t care).
Bit
4: this bit is an X (don’t care).
Bit
3: this bit is ignored by the CompactFlash Storage Card.
Bit 2 (SW Rst
): this bit is set to 1 in order to force the CompactFlash Storage Card to perform an AT Disk
controller Soft Reset operation. This does not change the PCMCIA Card
Configuration Registers (4.3.2 to 4.3.5) as a hardware Reset does. The Card remains in
Reset until this bit is reset to ‘0.’
Bit 1 (-IEn
): the Interrupt Enable bit enables interrupts when the bit is 0. When the bit is 1,
The interrupts from the CompactFlash Storage Card are disabled. This bit also controls the Int bit in the
Configuration and Status Register. This bit is set to 0 at power on and Reset.
Bit 0
: this bit is ignored by the CompactFlash Storage Card.
10) Card (Drive) Address Register(Address 3F7h[377h]; Offset Fh)
This register is provided for compatibility with the AT disk drive interface. It is recommended that this register not
be mapped into the host’s I/O space because of potential conflicts on Bit 7. The bits are defined as follows:
D7
D6
D5
D4
D3
D2
D1
D0
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