Description Of Major Ics - JVC XV-S56BK Service Manual

XV-S56BK/XV-S57SL

Description of major ICs

AN8702FH(IC101):Frontend processor
1.Pin layout
2.Pin function
Symbol I/O
Pin No.
I
1 PC1 Laser input terminal (DVD)
O
2 Laser drive signal output terminal (DVD)
PC01
I
Laser input terminal (CD)
3 PC2
O
4 PC02 Laser drive signal output terminal (CD)
I
5 TGBAL Tangential phase balance control terminal
I
6 Tracking balance control terminal
TBAL
I
Focus balance control terminal
7 FBAL
O
8 POFLT Track detection threshold level terminal
I
9 DTRD Data slice part data read signal input terminal
(For RAM)
I
10 IDGT Data slice part address part gate signal input
terminal( For RAM)
I
11 Standby mode control terminal
STANDBY
I
SEN(Serial data input terminal)
12 SEN
I
13 SCK SCK(Serial data input terminal)
I
14 STDI STDI(Serial data input terminal)
I
15 Standard electric current terminal
RSEL
I
Electric current setting terminal of JLine
16 JLINE
I
17 TEN Reversing input terminal of tracking error output AMP.
O
18 TEOUT Tracking error signal output terminal
I
19 Offset adjusting terminal 1
ASN
O
20 ASOUT Full adder signal output terminal
I
21 FEN Focus error output amplifier reversing input terminal
O
22 Focus error signal output terminal
FEOUT
-
Connect to GND
23 VSS
O
24 TG Tangential phase error signal output terminal
-
25 VDD Power supply terminal 3V
-
26 Connect to GND
GND2
O
VREF2 voltage output terminal
27 VREF2
-
28 VCC2 Power supply terminal 5V
O
29 VHALF VHALF voltage output terminal
O
30 Reversing output terminal of filter AMP.
DFLTON
O
31 DFLTOP Filter AMP. output terminal
I
32 DSFLT Capacity connection terminal for filter output
-
33 Connect to GND
GND3
1-22
PC1 1
2
PC01
PC2 3
PC02 4
TGBAL 5
TBAL 6
FBAL 7
AN8702FH
POFLT 8
DTRD 9
IDGT 10
STANDBY 11
SEN 12
SCK 13
STDI 14
RSEL 15
JLINE 16
Description
48 RFINN
47 RFINP
46 TESTSG
45 AGCO
44 AGCG
43 PEAK
42 BOTTOM
41 RFENV
40 BDO
39 OFTR
38 DCRF
37 RFC
36 VCC3
35 RFOUT
34 RFDIFO
33 GND3
Symbol I/O
Pin No.
O
34 RFDIFO Radial differential motion output terminal
35 RFOUT - Connect to TP101
36 VCC3 -
Power supply terminal 5V
O
37 RFC Filter for RF delay correction AMP.
O
38 DCRF All addition amplifier capacitor terminal
39 OFTR O OFTR output terminal
40 BDO O
BDO output terminal
O
41 RFENV RF envelope output terminal
O
42 BOTTOM Bottom envelope detection filter terminal
43 PEAK O
Peak envelope detection filter terminal
44 O
AGCG AGC amplifier gain control terminal
O
45 AGCO AGC amplifier level control terminal
46 TESTSG I TEST signal input terminal
47 RFINP I
RF signal positive input terminal
I
48 RFINN RF signal negative input terminal
I
49 VIN5 Focus input of external division into two terminal
50 VIN6 I Focus input of external division into two terminal
51 VIN7 -
Non connect
-
52 VIN8 Non connect
I
53 VIN9 Focus input of external division into two terminal
54 VIN10 I
Focus input of external division into two terminal
55 -
VCC1 Power supply terminal 5V
O
56 VREF1 VREF1 voltage output terminal
57 VIN1 I External division into four (DVD/CD) RF input
terminal 1
I
58 VIN2 External division into four (DVD/CD) RF input
terminal 2
59 VIN3 I External division into four (DVD/CD) RF input
terminal 3
I
60 VIN4 External division into four (DVD/CD) RF input
terminal 4
61 GND1 -
Connect to GND
62 I
VIN11 3 beam sub input terminal 2 (CD)
I
63 VIN12 3 beam sub input terminal 1 (CD)
64 HDTYPE - Connect to ground
Description