– 28 –
Pin No.
Pin name
I/O
Description
1
I
I
Input of RF signal l converted from I to V
2
J
I
Input of RF signal J converted from I to V.
3
VC
O
Midpoint voltage (+1.5V) generation output.
4 - 9
A–F
I
Signal inputs from optical pickup detector.
10
PD
I
Light volume monitor input.
11
APC
O
Laser APC output.
12
APCREF
I
Reference voltage input for laser power setting.
13
GND
–
Ground.
14
TEMPI
I
Temperature sensor connection terminal.
15
TEMPR
O
Reference voltage output for temperature sensor.
16
SWDT
I
Serial data input from CXD2652AR.
17
SCLK
I
Serial clock input from CXD2652AR.
18
XLAT
I
Latch signal input from CXD2652AR. “L”: Latch
19
XSTBY
I
Standby signal input. “L”: Standby
20
FOCNT
I
Center frequency control voltage input of internal circuits BFF22, BPF3T and EQ from
CXD2652AR.
21
VREF
O
Reference voltage output (not used).
22
EQADJ
I/O
Pin for center frequency setting of internal circuit EQ.
23
3TADJ
I/O
Pin for center frequency setting of internal circuit BPF3T.
24
VCC
–
Power supply (+3V).
25
WBLADJ
I/O
Pin for center frequency setting of internal circuit BPF22.
26
TE
O
Tracking error signal output to CXD2652AR.
27
CSLED
–
External condenser connector pin for thread error signal LPF.
28
SE
O
Thread error signal output to CXD2652AR.
29
ADFM
O
ADIP FM signal output.
30
ADIN
I
ADIP signal comparator input ADFM connection by coupling with AC.
31
ADAGC
–
External condenser connector pin for AGC of ADIP.
32
ADFG
O
ADIP duplex signal output to CXD2652AR.
33
AUX
O
I3 signal/temperature signal output (switched by serial command) to CXD2652AR.
34
FE
O
Focus error signal output to CXD2652AR.
35
ABCD
O
Light volume signal output to CXD2652AR.
36
BOTM
O
RF/ABCD bottom hold signal output to CXD2652AR.
37
PEAK
O
RF/ABCD peak hold signal output to CXD2652AR.
38
RF
O
RF equalizer output to CXD2652AR.
39
RFAGC
–
RF AGC circuit external condenser connector pin.
40
AGCI
I
Input RF amplifier output is input to RF AGC circuit by coupling with AC.
41
COMPO
O
User comparator output (not used).
42
COMPP
I
User comparator input (Fixed at “L”).
43
ADDC
I/O
Low-pass cutoff external capacitor terminal of ADIP amplifier.
44
OPO
O
User op amplifier output (not used).
45
OPN
I
User op amplefier inverted input (Fixed at “L”).
46
RFO
O
RF amplifier output.
47
MORFI
I
Group RF signal input by coupling with AC.
48
MORFO
O
Group RF signal output.
SECTION 6
DIAGRAMS
6-1. EXPLANATION OF IC TERMINALS
BD BOARD IC101 MD SECTION RF AMPLIFIER (CXA2523R)
APC : Auto Power Control
AGC : Auto Gain Control
