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6-12.
IC PIN FUNCTION DESCRIPTION
•
BD (MD) BOARD IC101
CXA2523AR (RF AMPLIFIER)
Pin No.
Pin Name
I/O
Function
1
I
I
I-V converted RF signal I input from the optical pick-up block detector
2
J
I
I-V converted RF signal J input from the optical pick-up block detector
3
VC
O
Middle point voltage (+1.65V) generation output terminal
4 to 9
A to F
I
Signal input from the optical pick-up detector
10
PD
I
Light amount monitor input terminal
11
APC
O
Laser amplifier output terminal to the automatic power control circuit
12
APCREF
I
Reference voltage input terminal for setting laser power
13
GND
—
Ground terminal
14
TEMPI
I
Connected to the temperature sensor
15
TEMPR
O
Output terminal for a temperature sensor reference voltage
16
SWDT
I
Writing serial data input from the CXD2652AR (IC121)
17
SCLK
I
Serial clock signal input from the CXD2652AR (IC121)
18
XLAT
I
Serial latch signal input from the CXD2652AR (IC121)
19
XSTBY
I
Standby signal input terminal
“L”: standby (fixed at “H” in this set)
20
F0CNT
I
Center frequency control voltage input terminal of internal circuit (BPF22, BPF3T, EQ) input from
the CXD2652AR (IC121)
21
VREF
O
Reference voltage output terminal
Not used (open)
22
EQADJ
I
Center frequency setting terminal for the internal circuit (EQ)
23
3TADJ
I
Center frequency setting terminal for the internal circuit (BPF3T)
24
VCC
—
Power supply terminal (+3.3V)
25
WBLADJ
I
Center frequency setting terminal for the internal circuit (BPF22)
26
TE
O
Tracking error signal output to the CXD2652AR (IC121)
27
CSLED
I
Connected to the external capacitor for low-pass filter of the sled error signal
28
SE
O
Sled error signal output to the CXD2652AR (IC121)
29
ADFM
O
FM signal output of the ADIP
30
ADIN
I
Receives a ADIP FM signal in AC coupling
31
ADAGC
I
Connected to the external capacitor for ADIP AGC
32
ADFG
O
ADIP duplex signal (22.05 kHz ± 1 kHz) output to the CXD2652AR (IC121)
33
AUX
O
Auxiliary signal (I3 signal/temperature signal) output to the CXD2652AR (IC121)
34
FE
O
Focus error signal output to the CXD2652AR (IC121)
35
ABCD
O
Light amount signal (ABCD) output to the CXD2652AR (IC121)
Light amount signal (RF/ABCD) bottom hold output to the CXD2652AR (IC121)
Light amount signal (RF/ABCD) peak hold output to the CXD2652AR (IC121)
Playback EFM RF signal output to the CXD2652AR (IC121)
Connected to the external capacitor for RF auto gain control circuit
Receives a RF signal in AC coupling
User comparator output terminal
Not used (open)
User comparator input terminal
Not used (fixed at “L”)
Connected to the external capacitor for cutting the low band of the ADIP amplifier
User operational amplifier output terminal
Not used (open)
45
OPN
I
User operational amplifier inversion input terminal
Not used (fixed at “L”)
46
RFO
O
RF signal output terminal
47
MORFI
I
Receives a MO RF signal in AC coupling
48
MORFO
O
MO RF signal output terminal
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