參數(shù)資料
型號(hào)： KS9245
廠(chǎng)商： SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述： Automated CD-ROM Controller(光盤(pán)驅(qū)動(dòng)器控制器器)
中文描述： 自動(dòng)CD - ROM控制器（光盤(pán)驅(qū)動(dòng)器控制器器）
文件頁(yè)數(shù)： 36/102頁(yè)
文件大?。?/td> 419K
代理商： KS9245
SAMSUNG
Version: TM 2.4
KS9245 ATAPI Automated CD-ROM Controller
Preliminary Technical Manual
_____________________________________________________________
Do Not Copy or Release
3-1
Chapter 3
Hardware Sequence Command Registers
Register 0Eh :
Acronym:
BIT 7
Rsvd
Host Sequence Command Register (Write)
HSC
BIT 5
BIT 4
BIT 3
Sservice
Srelease
STFInit
BIT 6
SAAbort
BIT 2
SCpl
BIT 1
SCplChk
BIT 0
SDSC
The
Host Sequence Command Register
is used to start the hardware ATAPI interface sequence.
By using the features in this register, firmware overhead can be minimized and command
operations accelerated. Each of these operations are performed immediately after a “1” is written
to the corresponding bit. Therefore, polling is not required to check completion. Writing a “0” to
these bits will not cause any operation.
Bit 7: Reserved
This bit is reserved for the future enhancements.
Bit 6: SAAbort (Start ATA Abort Operation)
When this bit is set, the KS9245 automatically aborting ATA illegal commands.
Bit 5: Sservice (Start ATAPI Service Operation)
When this bit is set, the KS9245 automatically performs the ATAPI Service sequence in
overlapped command operation.
Bit 4: Srelease (Start ATAPI Release Operation)
When this bit is set, the KS9245 automatically performs the ATAPI Release sequence in
overlapped command operation.
Bit 3: STFInit (Task File Registers Initialized)
When this bit is set, the KS9245 initializes the ATA Task File Registers
.
Bit 2: SCpl (Start Command Completion with no Error Setting)
When this bit is set, the KS9245 performs the ATAPI command completion without check condition
sequence.
Bit 1: SCplChk (Start Command Completion with Error Setting)
When this bit is set, the KS9245 performs the ATAPI command completion with check condition
sequence.
Bit 0: SDsc (Set DSC bit for Seek Completion Operation)
When this bit is set, the KS9245 performs the ATAPI seek command completion sequence
.
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