Ic702 (Mn662790Rsc) Servo Processor/ Digital Signal Processor/ Digital Filter/ D/A Converter - Panasonic SA-AK18 Service Manual

Pin No. Mark I/O
1 PDE
2 PDF
3 VCC
4 PDA
5 PDB
6 LPD
7 LD
8 RF
9 RFIN
10 CSBRT
11 CEA
12 BDO
13 LDON
14 GND
15 /RFDET
16
PDOWN
17 OFTR
18 NC
19 ENV
20 NC
21 NC
22 TEN
23 TEOUT
24 FEOUT
25 FEN
26 VREF
27 TBAL
28 FBAL
14.2. IC702 (MN662790RSC) Servo processor/ Digital signal processor/
Digital filter/ D/A converter
Function
I Tracking signal input 1
I Tracking signal input 2
I Power supply
I Focus signal input terminal
1
I Focus signal input terminal
2
I APC amp input
O APC amp output
O RF summing output
I Detector's input
I Capacitor for OFTR
connection
I Capacitor for HPF amp
connection
O BDO output ("H" : drop out)
I APC control
— Ground
O NRFDET output ("L" :
detection)
O Power-down input
O OFTR output
O N.C.
O 3T-ENV output
I N.C.
I N.C.
I TE amp input
O TE amp output
O FE amp output
I FE amp input
O Reference voltage output
I Tracking balance control
I Focus balance control
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