參數(shù)資料
型號: HFDOM40MVXXX
廠商: Hanbit Electronics Co.,Ltd.
英文描述: 40Pin Disk On Module Min.16MB ~ Max.768MB, True IDE Interface Mode, 3.3V / 5.0V Operating
中文描述: 40Pin磁盤模塊Min.16MB?Max.768MB,真正的IDE接口模式,3.3 / 5.0V工作
文件頁數(shù): 10/13頁
文件大小: 178K
代理商: HFDOM40MVXXX
HANBit HFDOM40MVxxx
URL:www.hbe.co.kr 10 / 10 HANBit Electronics Co., Ltd.
Rev. 1.0 (January. 2004)
Bit 5
: This bit is set to 1.
Bit 4 (DRV):
DRV is the drive number. When DRV=0, drive (card) 0 is selected. When DRV=1, drive (card)
1 is selected. The CompactFlash Storage Card is set to be Card 0 or 1 using the copy field
(Drive #) of the PCMCIA Socket & Copy configuration register.
Bit 3 (HS3)
: When operating in the Cylinder , Head, Sector mode, this is bit 3 of the head number. It is Bit
27 in the Logical Block Address mode.
Bit 2 (HS2)
: When operating in the Cylinder, Head, Sector mode, this is bit 2 of the head number. It is Bit
26 in the Logical Block Address mode.
Bit 1 (HS1)
: When operating in the Cylinder, Head, Sector mode, this is bit 1 of the head number. It is Bit
25 in the Logical Block Address mode.
Bit 0 (HS0)
: When operating in the Cylinder, Head, Sector mode, this is bit 0 of the head number. It is Bit
24 in the Logical Block Address mode.
Status & Alternate Status Register
These registers return the CompactFlash Storage Card status when read by the host. Reading the Status
register does clear a pending interrupt while reading the Auxiliary 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
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 (RDY)
: RDY 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 that information 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 terminated with 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.
Device Control Register
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:
D7
D6
D5
D4
D3
D2
D1
D0
X
X
X
X
1
SW Rst
-IEn
0
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 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, 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.
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