參數(shù)資料
型號(hào)： SST48CF048-C1
元件分類： PROM
英文描述： 24M X 16 FLASH 3.3V PROM CARD, 100 ns, XMA50
封裝： CARD-50
文件頁數(shù)： 41/62頁
文件大小： 1077K
代理商： SST48CF048-C1
46
Data Sheet
CompactFlash Card
SST48CF008 / 016 / 024 / 032 / 048 / 064 / 096 / 128 / 192 / 256
2002 Silicon Storage Technology, Inc.
S71125-03-000
2/02
375
At command completion, the Command Block registers contain the cylinder, head and sector number of
the last sector read.
If an error occurs, the read terminates at the sector where the error occurred. The Command Block
registers contain the cylinder, head and sector number of the sector where the error occurred. The
flawed data is pending in the sector buffer.
Subsequent blocks or partial blocks are transferred only if the error was a correctable data error. All
other errors cause the command to stop after transfer of the block which contained the error.
3.2.1.11 Read Long Sector - 22H or 23H
The Read Long command performs similarly to the Read Sector(s) command except that it returns 516
Bytes of data instead of 512 Bytes. During a Read Long command, the CompactFlash card does not
check the ECC bytes to determine if there has been a data error. Only single sector read long
operations are supported. The transfer consists of 512 Bytes of data transferred in Word-Mode followed
by 4 Bytes of ECC data transferred in Byte-Mode. This command has the same protocol as the Read
Sector(s) command. Use of this command is not recommended.
3.2.1.12 Read Sector(s) - 20H or 21H
This command reads from 1 to 256 sectors as specified in the Sector Count register. A sector count of
0 requests 256 sectors. The transfer begins at the sector specified in the Sector Number register. When
this command is issued and after each sector of data (except the last one) has been read by the host,
the CompactFlash card sets BSY, puts the sector of data in the buffer, sets DRQ, clears BSY, and
generates an interrupt. The host then reads the 512 Bytes of data from the buffer.
At command completion, the Command Block registers contain the cylinder, head and sector number of
the last sector read. If an error occurs, the read terminates at the sector where the error occurred. The
Command Block registers contain the cylinder, head, and sector number of the sector where the error
occurred. The flawed data is pending in the sector buffer.
Bit ->
76
54
32
10
Command (7)
22H or 23H
C/D/H (6)
1
LBA
1
Drive
Head (LBA 27-24
Cyl High (5)
Cylinder High (LBA 23-16)
Cyl Low (4)
Cylinder Low (LBA 15-8)
Sec Num (3)
Sector Number (LBA 7-0)
Sec Cnt (2)
X
Feature (1)
X
Bit ->
76
54
32
10
Command (7)
20H or 21H
C/D/H (6)
1
LBA
1
Drive
Head (LBA 27-24)
Cyl High (5)
Cylinder High (LBA 23-16)
Cyl Low (4)
Cylinder Low (LBA 15-8)
Sec Num (3)
Sector Number (LBA 7-0)
Sec Cnt (2)
X
Feature (1)
X
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