XV-LTR1
1-23
Description of major ICs
AN8703FH-V (IC101) : Frontend processor
1.Pin layout
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
Laser input terminal (DVD)
Laser drive signal output terminal (DVD)
Laser input terminal (CD)
Laser drive signal output terminal (CD)
VFOSHORT control terminal
Tracking balance control terminal
Focus balance control terminal
Track detection threshold level terminal
Data slice part data read signal input terminal
(For RAM)
Data slice part address part gate signal input
terminal( For RAM)
Standby mode control terminal
SEN(Serial data input terminal)
SCK(Serial data input terminal)
STDI(Serial data input terminal)
Standard electric current terminal
Electric current setting terminal of JLine
Reversing input terminal of tracking error output AMP.
Tracking error signal output terminal
Offset adjusting terminal 1
Full adder signal output terminal
Focus error output amplifier reversing input terminal
Focus error signal output terminal
Offset adjusting terminal 2
Non connect
Output amplitude adjustment for DRC
Connect to GND
VREF2 voltage output terminal
Power supply terminal 5V
VHALF voltage output terminal
Reversing output terminal of filter AMP.
Filter AMP. output terminal
Capacity connection terminal for filter output
Connect to GND
I
O
I
O
I
I
I
O
I
I
I
I
I
I
I
I
I
O
I
O
I
O
I
-
O
-
O
-
O
O
O
I
-
Pin No.
Symbol
LPC1
LPC01
LPC2
LPC02
VFOSHORT
TBAL
FBAL
POFLT
DTRD
IDGT
STANDBY
SEN
SCK
STDI
RSCL
JLINE
TEN
TEOUT
AGCBAL
ASOUT
FEN
FEOUT
AGCOFST
MON
AGCLVL
GND2
VREF2
VCC2
VHALF
DFLTON
DFLTOP
DCFLT
GND3
I/O
Description
Pin No.
Symbol
I/O
Description
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
RFDIFO
RFOUT
VCC3
RFC
DCRF
OFTR
BDO
RFENV
BOTTOM
PEAK
AGCG
AGCO
TESTSG
RFINP
RFINN
VIN5
VIN6
VIN7
VIN8
VIN9
VIN10
VCC1
VREF1
VIN1
VIN2
VIN3
VIN4
GND1
VIN11
VIN12
HDTYPE
-
-
-
O
O
O
O
O
O
O
O
O
I
I
I
I
I
-
-
I
I
-
O
I
I
I
I
-
I
I
O
Non connect
Connect to TP103
Power supply terminal 3.3V
Filter for RF delay correction AMP.
All addition amplifier capacitor terminal
OFTR output terminal
BDO output terminal
RF envelope output terminal
Bottom envelope detection filter terminal
Peak envelope detection filter terminal
AGC amplifier gain control terminal
AGC amplifier level control terminal
TEST signal input terminal
RF signal positive input terminal
RF signal negative input terminal
Internal four-partition (CD) RF input 1
Internal four-partition (CD) RF input 2
Internal four-partition (CD) RF input 3
Internal four-partition (CD) RF input 4
External two-partition (DVD) RF input 2
External two-partition (DVD) RF input 1
Power supply terminal 5V
VREF1 voltage output terminal
Internal four-partition (DVD) RF input 1
Internal four-partition (DVD) RF input 2
Internal four-partition (DVD) RF input 3
Internal four-partition (DVD) RF input 4
Connect to GND
3 beam sub input terminal 2 (CD)
3 beam sub input terminal 1 (CD)
HD Type selection
2.Pin function
1
16
48
33
64 49
17 32