37
38
PEAK
RF
39
RFAGC
40
AGCI
41
COMPO
42
COMPP
43
ADDC
44
OPO
45
OPN
46
RFO
47
MORFI
48
1
2
MORFO
24
23
Vcc
3TADJ
22 EQADJ
21 VREF
20 F0CNT
19 XSTBY
18 XLAT
17 SCLK
16 SWDT
15 TEMP R
14 TEMP I
13 GND
I
J
3
VC
4
A
5
B
6
C
7
D
8
E
9
F
10
PD
11
APC
12
APCREF
36
35
BOTM
ABCD
34
FE
33
AUX
32
ADFG
31
ADAGC
30
ADIN
29
ADFM
28
SE
27
CSLED
26
TE
25
WBLADJ
Peak, Bottom Detector
AGC, EQ
USER
Comp
USER
OP Amp
RF Amp
3T Detector
ABCD Amp
I-V Amp
APC
TEMP Amp
MUX
FE Amp
ADIP Amp
TE/SE Amp
CPU
Command I/F
CXA2523AR (IC310) : MD Servo
1.Block Diagram
2.Pin Function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
I-V converted RF signal I input.
I-V converted RF signal J input.
Vcc/2 voltage output.
A current input for main beam servo signal.
B current input for main beam servo signal.
C current input for main beam servo signal.
D current input for main beam servo signal.
E current input for side beam servo signal.
F current input for side beam servo signal.
Reflection light quantity monitor signal input.
Laser APC output.
Reference voltage input for the laser power intensity setting.
Connect to GND.
Connects the temperature sensor.
Connects the temperature sensor. outputs the reference voltage.
Data input for microcomputer serial interface.
Shift clock input for microcomputer serial interface.
Latch signal input for microcomputer serial interface.Latched when low.
Standby setting pin. Normal operation when high Standby when low.
Internal current source setting pin.
I
J
VC
A
B
C
D
E
F
PD
APC
APCREF
GND
TEMPI
TEMP R
SWDT
SCLK
XLAT
XSTBY
F0CNT
I
I
O
I
I
I
I
I
I
I
O
I
-
I
I
I
I
I
I
I
Pin No.
Symbol
I/O
Function
Summary of Contents for KD-MX2900R
Page 64: ...Printed circuit boards Main board old type Forward side Main board old type Reverse side ...
Page 65: ...Main board new type Forward side Main board new type Reverse side ...
Page 66: ...MD CD Servo board Forward side Switch board Forward side ...
Page 67: ...MD CD Servo board Reverse side Switch board Reverse side ...