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SA-AK220GCP
21 Terminal Function of IC's
21.1. IC701 (AN22004A-NF) Servo
Amplifier
Pin No.
Mark
1
LPD
2
LD
3
VCC
4
EQSW
5
RFOUT
6
RFIN
7
CAGC
8
ARF
9
CEA
10
3TOUT
11
DCDET
12
OFTCONT
13
BDO
14
OFTR
15
/RFDET
16
LDON
17
GND
18
EQ8ST
19
VREF
20
TEN
21
TEOUT
22
FEN
23
FEOUT
24
GCTL
25
FBAL
26
TBAL
27
E
28
F
29
D
30
B
31
C
32
A
21.2. IC702 (MN6627934CH) Servo
Processor/ Digital Signal
Processor/ Digital Filter/ D/A
Converter
Pin No.
Mark
1
DRVDD
2
D0
3
D1
4
NEW
5
NRAS
6
D2
7
D3
8
NCAS0
9
A10
10
A8
11
A7
12
A6
13
A5
14
A4
15
A9
16
A0
17
A1
18
A2
19
A3
I/O
Function
I
APC Amp input
I
APC Amp output
I
Power supply
I
Focus signal input terminal 1
I
RF summing output
I
AGC input
O
AGC Control
O
AGC output
I
Detector's input
I
3 T output
I
Capacitor for HPF amp connection
O
Capacitor 4 OFTR connection
I
BDO output ("H": Drop_out)
O
OFTR output
O
NRFDET output ("L" : detection)
O
Power-down input
-
GND
O
OFTR/BDO
-
VREF
I
TE Amp input
I
TE Amp output
I
FE Amp input
O
FE Amp output
O
GCTL
I/O
Focus Balance Control
O
Tracking balance Control
I
Tracking balance control
I
Focus balance control
I
I
I
I
I/O
Function
-
Power
supply
for
interface (Pin 2 to 19 and 80)
I/O
DRAM data I/O signal 0
I/O
DRAM data I/O signal 1
O
DRAM write enable signal
I/O
DRAM RAS control signal
I/O
DRAM data I/O signal 2
I/O
DRAM data I/O signal 3
O
DRAM CAS control signal 0
O
DRAM CAS control signal 10
O
DRAM address signal 8
O
DRAM address signal 7
O
DRAM address signal 6
O
DRAM address signal 5
O
DRAM address signal 4
O
DRAM address signal 9
O
DRAM address signal 0
O
DRAM address signal 1
O
DRAM address signal 2
O
DRAM address signal 3
Pin No.
20
DVSS2
21
DVDD2
22
SPOUT
23
TRVP
24
TRVM
25
TRP
26
TRM
27
FOP
28
FOM
29
IOVDD1
30
TBAL
31
FBAL
32
FE
33
TE
34
RFENV
35
OFT
36
NRFDET
37
BDO
38
LDON
39
ARF
40
IREF
41
ADPVCC
42
DSLF
43
RFSW
44
PLLF
45
PLLFO
46
AVDD2
47
AVSS2
DRAM
48
OUTL
49
AVSS1
50
OUTR
51
AVDD1
52
DVSS3
53
DVDD3
54
TMOD2
55
FLAG
56
EXT2
57
EXT0
58
EXT1
59
IOVDD2
60
TX
61
MCLK
80
Mark
I/O
Function
-
Ground for digital circuits
-
Power
supply
cirfcuits
O
Spindle motor drive signal
output (absolute value output)
O
Traverse
(positive polarity output)
O
Traverse
(negative porarity output)
O
Tracking drive output (positive
polarity output)
O
Tracking
(negative polarity output)
O
Focus drive output (positive
polarity output)
O
Focus drive output (negative
polarity output)
-
Power supply for I/O
O
Tracking balance adjustment
output
O
Focus
balance
output
I
Focus
error
(analog input)
I
Tracking error signal input
(analog input)
I
RF
envelope
(analog input)
I
Off-track signaL input High:
Off-track)
I
RF detection signal input
Low: detection
I
Dropout signal input
High: Dropout
O
Laser ON signal output
High: ON
I
RF signal input
I
Reference current input
I
Voltage
input
voltage monitor (analog input)
O
DSL loop filter
I
DSL loop filter
O
PLL loop filter
O
PLL loop filter
-
Power
supply
circuits (for DSL, PLL and
A/D)
-
Ground for analog circuits (for
DSL, PLL and A/D)
O
L-ch audio output
-
Ground for analog circuits (for
audio output stage)
O
R-ch audio output
-
Power
supply
circuits
(for
stage)
-
Ground for digital circuits
-
Power supply for digital circuit
I
Test input pin Low: Normal
O
Flag signal output
I/O
Expansion I/O port 2
I/O
Expansion I/O port 0
I/O
Expansion I/O port 1
I
Power supply for I/O
O
Digital audio interface output
signal
I
Micro
controller
clock signal input (Latches
data at the rising adge)
for
digital
drive
output
drive
output
drive
output
adjustment
signal
input
signal
input
for
supply
for
analog
for
analog
audio
output
command
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