IC BLOCK DIAGRAM & DESCRIPTION
SYMCROm OUS D171CT
LFM DEMODULATION
CI, C2
ERROR DETECT
& CO RRLC1 CONTROL FLAG
E=
CLv+ 18
CLV
DIGITAL SERVO
CL Y- II
Y/P !2
[161 (48)
Pn. SBCK
SUB COD I DX TRACT
(14), (41)
Q Cnc
SBSY. srs Y
=0--4
Co!w
Rvc
DtMo
+
No. PIN NAME
1 TEST1
2
AO
3
Al
+=
4 PDO
5
Vss
6
I
EFMO
,
7 EFMO
=t==
=
9
TEST2
10
CLV +
11
CLV
12
I
VIP
13 FOCS
14 FST
15 FZD
-
17
(
—
(
t
DAC OUTPUT !MTEIFAC1
XTAL
lIU!NC CEME1A101
/01 FUNCTION
I For TEST. Normal time IS non connection.
o
Input from VCO output In LA9220. Phase com-
1
r-l
parlson output of VCO and EFM signal.
w
Negative output through ampllfude hmiter.
O Anti phase of EFMO. This signal use Shce Lev-
PosWe output through amplltude Ihmlfer.
O Anti phase of EFMO. Thw signal use Sllce Lev-
el Control.
/ ln~utilnq HF signal of 1-2 Vp.p. This Wnal use
=
For TEST. Normal time IS non connection.
O Out ut for DISC Motor Control.
O Out ut for Disc Motor ConLrol.
~ CLV rough Servo time : Output “H”
u
I Phase control time : OutpuI”L”
I FOCS Output “H” : Focus Servo Off. Lens pull
u
o
up wlfh slowly. FST Output “H” : Lens pull
I
down with slowly. If FZD generate, [[ reset out-
put of FOGS. For Iead-in of Focus.
No. IPIN NAME I I / O
44
16 HFL
17
TES
18 PCK
o
19
I
FSEQ O
m
25
I
JP+
I
o
26 JP- 0
27
I
DEMO I
28
TEST4 I
29 EMPH
o
30 I DFOFF I I
C2FCL1
LRSY
C2F
IO UOUT
DOU1
DFOPF
FUNCTION
Colmply wlfh command of track jump, It
oscillate kick Pulse, JP + & JP-. It jump the
prescribed number of track (1 ,4,1 6,64),
PCK Monitor (4,3218 MHz).
SYNC (FS of truth) de[ected from EFM smnal
= SYNC of counter : “H” (Latch Output -
dunrrg In
1 frame).
Comply with command of track jump, it
oscillate kick Pulse, JP + & JP. It jump the
prescribed number of track (1
,4,1 6,64).
For TEST. Normal time IS non cormectlon.
+
5V
Comply with cornrnand of track jump, II
oscillate kick Pulse, JP + & JP. It jump the
prescribed number of \rack (1
,4,1 6,64).
For ad]uslment of production process. Sound
on function.
For TEST. Nolmal lime IS non connection.
Output IS “H” time, It need dc-emphasis.
ON / OFF Swltchlng of Dlgllal Filter. Output
“H” Fllr?r OFF
-16-