參數(shù)資料
型號: 7P320ATA2500C25
英文描述: Flash Memory Card(320M位閃速存儲器卡)
中文描述: 閃存卡(320米位閃速存儲器卡)
文件頁數(shù): 32/62頁
文件大?。?/td> 626K
代理商: 7P320ATA2500C25
7PxxxATA25xxC25
June 2000 Rev. 1 – ECO #12936
32
White Electronic Designs Corporation
(508) 366-5151
1. Data register:
This register is a 16 bit register that has read/write ability, and it is used for transferring
1 sector data between the card and the host. This register can be accessed in word mode and byte mode.
This register overlaps the Error or Feature register.
bit15 bit14 bit13 bit12 bit11 bit10 bit9
bit8
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
D0 to D15
2. Error register:
This register is a read only register, and it is used for analyzing the error content at the
card accessing. This register is valid when the BSY bit in Status register and Alternate Status register are
set to "0" (Ready).
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
BBK
UNC
“0”
IDNF
“0”
ABRT
“0”
AMNF
bit
Name
Function
7
BBK (Bad block detected)
This bit is set when a Bad Block is detected in requested ID field.
6
UNC (Data ECC error)
This bit is set when an uncorrectable error occurs when reading the
card.
4
IDNF (I D Not Found)
The requested sector ID is in error or cannot be found.
2
ABRT (ABoRTed command)
This bit is set if the command has been aborted because of the card
status condition. (Not ready, Write fault, Invalid command, etc.)
0
AMNF (Address Mark Not Found) This bit is set in case of a general error.
3. Feature register:
This register is a write only register and provides information regarding features of
the drive which the host wishes to utilize.
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
Feature byte
4. Sector count register:
This register contains the numbers of sectors of data requested to be transferred
on a read or write operation between the host and the card. In this card, the plural sector transfer is
available across the Track or Cylinder. If the value of this register is zero, a count of 256 sectors is
specified. In the plural sector transfer, if not successfully completed, the register contains the number of
sectors which need to be transferred in order to complete the request. This register's initial value is "01H".
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
Sector count byte
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