Terminal Function Of Ics - Panasonic SA-AK52 Service Manual

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14 Terminal Function of ICs

14.1. IC701 (AN8885SBE1) Servo Amplifier
Pin No. Mark I/O
1 PDE I Tracking signal input 1
2 PDF I Tracking signal input 2
3 VCC I Power supply
4 PDA I Focus signal input terminal 1
5 PDB I Focus signal input terminal 2
6 LPD I APC amp input
7 LD O APC amp output
8 RF O RF summing output
9 RFIN I Detector's input
10 CSBRT I Capacitor for OFTR connection
11 CEA I Capacitor for HPF amp connection
12 BDO O BDO output ("H" : drop out)
13 LDON I APC control
14 GND — Ground
14.2. IC702 (MN662790RSC) Servo processor/ Digital signal processor/
Digital filter/ D/A converter
No. Mark I/O
1 BCLK O N.C.
2 LRCK O N.C.
3 SRDATA O N.C.
4 DVDD1 I Power supply input (for digital
circuit)
5 DVSS1 I GND (for digital circuit)
6 TX O Digital audio interface signal
output (Latches data at first
transition)
7 MCLK I Microprocessor
clock signal input
8 MDATA I Microprocessor
data signal input
9 MLD I Microprocessor
load signal input
10 SENSE O Sense signal output (OFT,
FESL,MAGEND,NAJEND,PO
SAD,SFG) (Not used, open)
11 /FLOCK O Focus servo feeding signal
output ("L" : Feed)
12 /TLOCK O Tracking servo feeding signal
output ("L" : Feed)
13 BLKCK O Sub-code block clock signal
output
during normal playback)
14 SQCK I External clock signal input for
sub-code Q resistor
15 SUBQ O Sub-code Q code output
16 DMUTE I Muting input ("H": mute)
17 STAT O Status signal output
(CRC,CUE,CLVS,TTSTVP,F
CLV,SQCK)
18 /RST I Reset signal input
19 SMCK O 1/2-divided clock signal of
crystal oscillating at MSEL =
"H" (fSMCK = 8.4672 MHz)
1/4-divided clock signal of
crystal oscillating at MSEL =
"L" (fSMCK = 4.2336 MHz)
20 CSEL I Frequency Selection Terminal
H = 33.8688 MHz; L =
16.9344 MHz
21 TRV O N.C.
22 TVD O Traverse drive output
23 PC O Spindle motor ON output ("L"
: ON)
Function Pin No.
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Function No.
24
25
26
27
28
29
command
30
command
31
command
32
33
34
35
36
(fBLKCK = 75Hz
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
25
Mark I/O Function
/RFDET O NRFDET output ("L" : detection)
PDOWN O Power-down input
OFTR O OFTR output
NC O N.C.
ENV O 3T-ENV output
NC I N.C.
NC I N.C.
TEN I TE amp input
TEOUT O TE amp output
FEOUT O FE amp output
FEN I FE amp input
VREF O Reference voltage output
TBAL I Tracking balance control
FBAL I Focus balance control
Mark I/O Function
ECM O Spindle motor drive signal
output(forced mode output)
ECS O Spindle motor drive signal
output
(servo error signal output)
KICK O N.C.
TRD O Tracking drive output
FOD O Focus drive output
VREF I D/A (drive) output (TVD, ECS,
TRD, FOD, FBAL, TBAL)
Reference voltage input
FBAL O Focus balance
output
TBAL O Tracking balance adjustment
output
FE I Focus error
(analog input)
TE I Tracking error signal input
(analog input)
RFENV I RF envelope signal input
VDET I Vibration detection
input ("H" : detection)
OFT I Off-track signal input ("H" : off
track)
TRCRS I Track cross signal input
/RFDET I RF detection signal input ("L"
: detection)
BDO I Dropout signal input ("H" :
Dropout)
LDON O Laser on signal output ("H" :
ON)
PLLF2 I/O N.C.
DSLF2 O Tracking Offset
output/DSL Balance Output
(DA Output)
WVEL O N.C.
ARF I RF signal input
IREF I Reference current input
DRF I DSL bias terminal (Not used,
open)
DSLF I/O DSL loop filter terminal
PLLF I/O PLL loop filter terminal
VCOF I/O VCO loop filter terminal
AVDD2 I Power supply
analog circuit)
AVSS2 I GND (for analog circuit)
SA-AK52
adjustment
signal input
signal
alignment
input (for