參數(shù)資料
型號(hào)： S1L9226X01-Q0R0
廠商： SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述： RF AMP & SERVO SIGNAL PROCESSOR
中文描述： 射頻放大器
文件頁(yè)數(shù)： 40/56頁(yè)
文件大?。?/td> 454K
代理商： S1L9226X01-Q0R0
S1L9226X
RF AMP & SERVO SIGNAL PROCESSOR
4
PRELIMINARY
Gain Control Flowchart 1
In gain control, the micom command from $811F
→
$8100 successively executes the down command and goes
status 1 to 2
→
3. If it reaches status 2, control ends.
Gain Control Method 1
The micom monitors the TGL output of ISTAT and, when it detects the output's H duty (0.1ms), ends. The
window comparator level at this time is +150mV - +300mV.
Gain Control Method 2
The micom monitors the TGH output of ISTAT and, when it detects the output's H duty (0.1ms), ends. The
window comparator level at this time is +150mV - +300mV.
Gain Control Method 3
The micom monitors the TGL output of ISTAT and, when it detects the output's H duty (0.1ms), ends. It
changes the window comparator level at this time from +150mV - +300mV to +250mV - +200mV. Then it re-
monitors the TGL output of ISTAT, and, if it detects the output's H duty (0.1ms), control ends. If it latches the
middle command between the previous micom command value and latter command value, +200mV gain
control becomes possible.
Gain Control Method 4
The micom monitors the TGL output of ISTAT and, when it detects the output's H duty (0.1ms), it down the
micom command by 1 and control ends. The window comparator level at this time is +150mV - +300mV.
Gain Control Method 5
Gain control is set to 32 steps in total and gain window is set to +250mV.
(That is, start from $811F and head toward $8110) after setting $811F, it monitors the ISTAT to check whether
five ISTAT were detected for 10ms. If yes, control ends, and, if not, it as gain switch is lowered by 1 step.
The above process is repeated three times and the average value obtained from this repetition set as the gain
control switch.
Start
- Environment Setting
Focus on $08
Spindle on, CLV-P mode
Tracking off $20
Sled off
Gain Window
Level Setting
ISTAT = H
End ADJ.
G0 to G4
Switch Control
Gain ADJ. Start $83F
Separate environment setting is
not required when controlling the
gain after controlling balance
+150mV - +300mV $84 1XXX
+250mV - +200mV $84 0XXX
YES
NO
32 TEP reduction of gain
ADJ. Switch from $811F -> $8100
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