參數(shù)資料
型號(hào)： THNCF192MBAI
廠商： Toshiba Corporation
英文描述： The THNCFxxxMBA/BAI series CompactFlash card is a flash technology based with ATA interface flash memory card.
中文描述： 在THNCFxxxMBA /白系列CF卡是閃存技術(shù)，ATA接口的閃存卡的。
文件頁(yè)數(shù)： 25/48頁(yè)
文件大小： 526K
代理商： THNCF192MBAI
THNCFxxxMBA/BAI Series
2002-10-20 25/48
Preliminary
9. Status register
This register is read only register, and it indicates the card status of command execution. When this register
is read in configured I/O card mode (INDEX=1,2,3) and level interrupt mode,
IREQ is negated.
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
BSY
DRDY
DWF
DSC
DRQ
CORR
IDX
ERR
bit
Name
Function
7
BSY (BuSY)
This bit is set when the card internal operation is executing. When this bit is set to
“
1
”
, other bits in this register are invalid.
6
DRDY (Drive ReaDY)
If this bit and DSC bit are set to
“
1
”
, the card is capable of receiving the read or
write or seek requests. If this bit is set to
“
0
”
, the card prohibits these requests.
5
DWF (Drive Write Fault)
This bit is set if this card indicates the write fault status.
4
DSC (Drive Seek Complete)
This bit is set when the drive seeks complete.
3
DRQ (Data ReQuest)
This bit is set when the information can be transferred between the host and Data
register. This bit is cleared when the card receives the other command.
2
CORR (CORRected data)
This bit is set when a correctable data error has been occurred and the data has
been corrected.
1
IDX (InDeX)
This bit is always set to
“
0
”
.
0
ERR (ERRor)
This bit is set when the previous command has ended in some type of error. The
error information is set in the error register. This bit is cleared by the next
command.
10. Alternate status register
This register is the same as Status register in physically, so the bit assignment refers to previous item of
Status register. But this register is different from Status register that –IREQ is not negated when data read.
11. Command register
This register is write only register, and it is used for writing the command to execute the requested operation.
The command code is written in the command register, after the parameter is written in the Task File when
the card is in Ready state.
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