參數(shù)資料
型號： KB9224
廠商： SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述： VIDEO-CD 2ND GENERATION
中文描述： 視頻-環(huán)糊精第二代
文件頁數(shù)： 54/55頁
文件大?。?/td> 450K
代理商： KB9224
VIDEO-CD 2ND GENERATION
KB9224
54
SPINDLE SERVO & LOW PASS FILTER
200 Hz Lpf is configured by the 20 k resistance and 0.33 uf Cap in order to eliminate carrier components. Fsw
becomes Low in Clv-s mode, so more powerful filter movements are carried out.
ITEM1. Mirror Mute (Used for Tracking Mute Only)
This circuit is used as an ABEX-725A countermeasure, which handles Tracking Muting when Mirror is detected. Its
MIN and MAX are set, and it detects a minimum of 11 kHz to a maximum of 700 Hz.
Except, Mute does not function in the following four cases.
When transmitting a MICOM tracking gain up command (TG1, TG2 = 1)
When Anti-shock is detected (ATSC)
When LOCK falls to L
When DEFECT is detected
ITEM2, TRCNT Output
TRCNT is an output generated by Mirror and TZC. Mirror is a Track Movement Detect output by the Main Beam,
and TZC is a Track Movement Detect output by Side Beam. TRCNT receives these 2 inputs and determines if the
Pick-up is currently moving inwards or outwards to use it when in Tracking Brake of $17.
Miiror Mute Operating / APC P-sub
APC On
APC Off
Interruption On (Mirror 11 kHz~0.7 kHz)
$854X
$85CX
Interruption Off
$855X
$85DX
Interruption On (Mirror 2.75 kHz~0.7 kHz)
$856X
$85EX
Interruption On (Mirror 5.5 kHz~0.7 kHz)
$857X
$85FX
220 K
-
+
220 K
220 K
220 K
15 K
50 K
100 K
15 K
22 K
22 K
20 K
-
+
SPDLO
FVCO
Double Speed
46
SPDL-
45
22
21
SMON
SMDP
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