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6-11. IC PIN FUNCTION DESCRIPTION
• BD BOARD IC101 CXA2523AR (RF AMP, FOCUS/TRACKING ERROR AMP)
Pin No.
Pin Name
1
I
2
J
3
VC
4 to 9
A to F
10
PD
11
APC
12
APCREF
13
GND
14
TEMPI
TEMPR
15
16
SWDT
17
SCLK
18
XLAT
19
XSTBY
20
F0CNT
21
VREF
22
EQADJ
23
3TADJ
24
VCC
25
WBLADJ
26
TE
27
CSLED
28
SE
29
ADFM
30
ADIN
31
ADAGC
32
ADFG
33
AUX
34
FE
35
ABCD
36
BOTM
37
PEAK
38
RF
39
RFAGC
40
AGCI
41
COMPO
42
COMPP
43
ADDC
44
OPO
45
OPN
46
RFO
47
MORFI
48
MORFO
I/O
I
I-V converted RF signal I input from the optical pick-up block detector
I
I-V converted RF signal J input from the optical pick-up block detector
O
Middle point voltage (+1.65V) generation output terminal
I
Signal input from the optical pick-up detector
I
Light amount monitor input from the optical pick-up block laser diode
O
Laser amplifier output terminal to the automatic power control circuit
I
Reference voltage input terminal for setting laser power
—
Ground terminal
I
Connected to the temperature sensor
O
Output terminal for a temperature sensor reference voltage
I
Writing serial data input from the CXD2652AR (IC121)
I
Serial data transfer clock signal input from the CXD2652AR (IC121)
I
Serial data latch pulse signal input from the CXD2652AR (IC121)
I
Standby signal input terminal "L": standby (fixed at "H" in this set)
Center frequency control voltage input terminal of internal circuit (BPF22, BPF3T, EQ) input
I
from the CXD2652AR (IC121)
O
Reference voltage output terminal Not used (open)
I
Center frequency setting terminal for the internal circuit (EQ)
I
Center frequency setting terminal for the internal circuit (BPF3T)
—
Power supply terminal (+3.3V)
I
Center frequency setting terminal for the internal circuit (BPF22)
O
Tracking error signal output to the CXD2652AR (IC121)
I
Connected to the external capacitor for low-pass filter of the sled error signal
O
Sled error signal output to the CXD2652AR (IC121)
O
FM signal output of the ADIP
I
Receives a ADIP FM signal in AC coupling
I
Connected to the external capacitor for ADIP AGC
ADIP duplex signal (22.05 kHz ± 1 kHz) output to the CXD2652AR (IC121)
O
O
Auxiliary signal (I
signal/temperature signal) output to the CXD2652AR (IC121)
3
O
Focus error signal output to the CXD2652AR (IC121)
O
Light amount signal (ABCD) output to the CXD2652AR (IC121)
O
Light amount signal (RF/ABCD) bottom hold output to the CXD2652AR (IC121)
O
Light amount signal (RF/ABCD) peak hold output to the CXD2652AR (IC121)
O
Playback EFM RF signal output to the CXD2652AR (IC121)
I
Connected to the external capacitor for RF auto gain control circuit
I
Receives a RF signal in AC coupling
O
User comparator output terminal Not used (open)
I
User comparator input terminal Not used (fixed at "L")
I
Connected to the external capacitor for cutting the low band of the ADIP amplifier
O
User operational amplifier output terminal Not used (open)
I
User operational amplifier inversion input terminal Not used (fixed at "L")
O
RF signal output terminal
I
Receives a MO RF signal in AC coupling
O
MO RF signal output terminal
Function
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