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