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參數(shù)資料
| 型號(hào)： | UM_S3C49F9X |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | S3C49F9X User’s Manual |
| 中文描述： | S3C49F9X用戶手冊(cè) |
| 文件頁(yè)數(shù)： | 47/74頁(yè) |
| 文件大?。?/td> | 653K |
| 代理商： | UM_S3C49F9X |
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S3C49F9X SOLID DISK CONTROLLER CARD CONFIGURATION
46
4.10.8 Drive/Head (LBA 27-24) Register (Address -1F6[176]; Offset 6):
The Drive/Head register is used to select the drive and head. It is also used to select LBA addressing
instead of cylinder/head/sector addressing. The bits are defines as follows:
D7
D6
D5
D4
1
LBA
1
DRV
Bit 7
This bit is set to 1.
Bit 6 (LBA)
LBA is a flag to select either Cylinder/Head/Sector (CHS) or Logical Block Address Mode
(LBA). When LBA=0, Cylinder/Head/Sector mode is selected. When LBA = 1, Logical Block Address is
selected. In Logical Block Mode, the Logical Block Address is interpreted as follows:
LBA7-LBA0:
Sector Number Register D7-D0.
LBA15-LBA8:
Cylinder Low Register D7-D0.
LBA23-LBA16:
Cylinder High Register D7-D0.
LBA27-LBA24:
Drive/Head Register HS3-HS0.
Bit 5
1 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 PC 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 bit3 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 bit2 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 bit1 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 bit0 of the head number. It is
Bit 24 in the Logical Block Address mo
de
D3
HS3
D2
HS2
D1
HS1
D0
HS0
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