MT1336
PRELIMINARY, SUBJ ECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE
GENERAL DESCRIPTION
M T 1 3 3 6 i s a h i g h p e r f o r m a n c e C M O S a n a l o g f r o n t -e n d I C f o r b o t h C D _ R O M d r i v e r u p t o 4 8 X S a n d
D V D - R O M d r i v e r u p t o 1 6 X S . I t a l s o s u p p o r t s D V D- R A M r e a d u p t o 4 X S V e r s i o n 2 . I t c o n t a i n s s e r v o a m p li f i e r s
t o g e n e r a t e f o c u s i n g e r r o r , 3-b e a m t r a c k i n g e r r o r , 1 b e a m r a d i a l p u s h -p u l l s i g n a l , R F l e v e l a n d S B A D f o r s e r v o
f u n c t i o n s . I t a l s o i n c l u d e s D P D t r a c k i n g e r r o r s i g n a l f o r D V D _ R O M a p p l i c a t i o n . F o r D V D- R A M d i s k s , t h e r e a r e
a l s o D i f f e r e n t i a l P u s h -P u l l ( D P P ) m e t h o d f o r g e n e r a t i n g t r a c k i n g s i g n a l a n d D i f f e r e n t i a l A s t i g m a t i c D e t e c t i o n
( D A D ) f o r p r o c e s s i n g f o c u s i n g s i g n a l . P r o g r a m m a b l e e q u a l i z e r a n d A G C c i r c u i t s a r e a l s o i n c o r p o r a t e d i n t h i s
c h i p t o o p t i m i z e r e a d c h a n n e l p e r f o r m a n c e . I n a d d i t i o n , t h i s c h i p h a s d u a l a u t o m a t i c l a s e r p o w e r c o n t r o l c i r c u i t s
f o r D V D- R O M ( D V D-R A M ) a n d C D -R O M s e p e r a t e l y a n d r e f e r e n c e v o l t a g e g e n e r a t o r s t o r e d u c e e x t e r n a l
c o m p o n e n t s . P r o g r a m m a b l e f u n c t i o n s a r e i m p l e m e n t e d b y t h e a c c e s s o f i n t e r n a l r e g i s t e r t h r o u g h b i -d i r e c t i o n a l
serial port to configure modes selection.
FEATURES
n
R F e q u a l i z e r w i t h p r o g r a m m a b l e
c
f
f r o m 3 M H z t o 7 0 M H z a n d p r o g r a m m a b l e b o o s t f r o m 3 d B t o
13dB.
n
M T 1 3 3 6 s u p p o r t s a t l e a s t e i g h t d i f f e r e n t k i n d s o f p i c k-u p h e a d s w i t h v e r s a t i l e i n p u t c o n f i g u r a t i o n f o r
both RF input stages and servo signal blocks.
n
Versatile on -line AGC.
n
3 beams tracking error signal generator for CD_ROM application.
n
One beam differential phase tracking error (DPD) generator for DVD_ROM application.
n
Differential push pull tracki ng error (DPP) generator for DVD_RAM application.
n
Focusing error signal generator for CD-ROM, DVD-ROM and DVD-RAM (DAD method).
n
RF level signal generator.
n
Sub-beam added signal for 3 beams CD_ROM.
n
One beam push -pull signal generator for central servo application.
n
High speed RF envelop detection circuit with bandwidth up to 400KHz for CD-ROM.
n
Defect and Blank detection circuits.
n
Dual automatic laser power control circuits with programmable level of LD monitor voltage.
n
Vref=1.4V voltage and V2ref=2.8V voltage generators.
n
V20=2.0V voltage for pick -up head reference.
n
Bi-directional serial port to access internal registers.
8.1 MT1336
8. IC BLOCK DIAGRAM & DESCRIPTION
11
Содержание DVD53
Страница 1: ...OPEN CLOSE PREV NEXT PLAY PAUSE STOP POWER SERVICE MANUAL DVD53 55 ...
Страница 12: ...7 MPEG BOARD CHECK WAVEFORM 7 1 27MHz WAVEFORM DIAGRAM 7 2 IC5L0380R PIN 2 WAVEFORM DIAGRAM 10 ...
Страница 45: ...FRONT SCHEMATIC DIAGRAM 43 ...
Страница 47: ...POWER BOARD SCHEMATIC DIAGRAM 45 ...
Страница 49: ...OUTPUT BOARD SCHEMATIC DIAGRAM 47 ...
Страница 54: ...MIAN SCHEMATIC DIAGRAM 52 ...
Страница 55: ...MIAN SCHEMATIC DIAGRAM 53 ...
