thncf032mbai TOSHIBA Semiconductor CORPORATION, thncf032mbai Datasheet - Page 25

• Manufacturer Part Number: thncf032mbai
• Description: Thncfxxxmba/bai Series Compactflash Card Flash Technology Based With Interface Flash Memory Card.
• Manufacturer: TOSHIBA Semiconductor CORPORATION

10. Alternate status register
11. Command register
9. Status register
is read in configured I/O card mode (INDEX=1,2,3) and level interrupt mode, −IREQ is negated.
Status register. But this register is different from Status register that –IREQ is not negated when data read.
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.
This register is read only register, and it indicates the card status of command execution. When this register
This register is the same as Status register in physically, so the bit assignment refers to previous item of
This register is write only register, and it is used for writing the command to execute the requested operation.
bit
7
6
5
4
3
2
1
0
BSY
bit7
BSY (BuSY)
DRDY (Drive ReaDY)
DWF (Drive Write Fault)
DSC (Drive Seek Complete)
DRQ (Data ReQuest)
CORR (CORRected data)
IDX (InDeX)
ERR (ERRor)
DRDY
bit6
Name
DWF
bit5
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.
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.
This bit is set if this card indicates the write fault status.
This bit is set when the drive seeks complete.
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.
This bit is set when a correctable data error has been occurred and the data has
been corrected.
This bit is always set to “0”.
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.
Preliminary
DSC
bit4
DRQ
bit3
THNCFxxxMBA/BAI Series
Function
CORR
bit2
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IDX
bit1
ERR
bit0