JVC TH-A30 Service Manual page 23

SP3721A (RU1) : DVD anlog front end chip
1.Pin layout
64-49
17-32
2.Pin function
Pin No. Symblo
1,2 DVDRFP,VDVDRFN
3,4 PD1,PD2
5-8 A2,B2,C2,D2
9 CP
10 CN
11-14 A,B,C,D
15,16 E,F
17 CDTE
18 VCI2
19 NC
20 VNB
21 DVDPD
22 DVDLD
23 CDPD
24 CDLD
25 LDON#
26 VC
27 VCI
28 VPB
29 MIRR
30 MP
31 MB
32 FDCHG#
33 MLPF
34 MEVO
35 MIN
36 PI
37 DFT
38 TPH
39 MEV
40 MEI
41 TE
42 FE
43 CE
44 LCN
45 LCP
46 SCLK
47 SDATA
48 SDEN
49 HOLD1
50 VNA
51,52 FNP,FNN
53,54 DIP,DIN
55 RX
56 BYP
57 SIGO
58 VPA
59,60 AIP,AIN
61,62 ATOP/ATON
63 CDRF
64 CDRFDC
I/O Function
I RF Signal Inputs
I CD Photodetector Interface Inputs
I Photo Detector Interface Inputs
I/O Differential Phase tracking LPF pin
I/O Differential Phase tracking LPF pin
I Photo Detector Interface Inputs
I CD trackin Error Inputs
- CD Tracking
- Reference Voltage Input
- No Connct
- Ground
I APC Input
O APC ouput
I APC Input
O APC output
I APC Output On/Off
- Reference Voltage output
- Reference Voltage Input
- Power
O Mirror Detect Output
- MIRR signal Peak hold pin
- MIRR signal Bottom hold pin
I Low Impedance Enalle
- MIRR signal LPF pin
O SIGO Bottom Envelope Output
I RF signal Input for Mirror
O Pull-in Signal Output
O Defect Output
- PI Top Hold pin
- Sigo Bottom Envelope pin
I Mirror Envelope Input
O Tracking Error Signal Output
O Focusing Error Signal Output
O Center Error Signal Output
- Center Error LPF pin
- Center Error LPF pin
I Serial Clock
I/O Serial Data
I Serial Data Enable
I Hold Control
- Ground
O Differential Normal Output
I Analog inputs for RF Single Buffer
- Reference Resistor Input
I/O
O Single Ended Normal Output
- Power
I AGC Amplifier Inputs
O Differential Attenuator Output
I RF Signal Input
O CD RF signal Output
TH-A30
1-23