81
6-27.
IC PIN FUNCTION DESCRIPTION
• BD (MD) BOARD IC101 CXA2523AR (RF AMP, FOCUS/TRACKING ERROR AMP)
Pin No.
Pin Name
I/O
Description
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 from the optical pick-up block laser diode
11
APC
O
Laser amplifier output terminal to the automatic power control circuit
12
APCREF
I
Reference voltage input for setting laser power from the CXD2662R (IC151)
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 CXD2662R (IC151)
17
SCLK
I
Serial data transfer clock signal input from the CXD2662R (IC151)
18
XLAT
I
Serial data latch pulse signal input from the CXD2662R (IC151)
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 CXD2662R (IC151)
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 CXD2662R (IC151)
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 CXD2662R (IC151)
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 CXD2662R (IC151)
33
AUX
O
Auxiliary signal (I
3
signal/temperature signal) output to the CXD2662R (IC151)
34
FE
O
Focus error signal output to the CXD2662R (IC151)
35
ABCD
O
Light amount signal (ABCD) output to the CXD2662R (IC151)
36
BOTM
O
Light amount signal (RF/ABCD) bottom hold output to the CXD2662R (IC151)
37
PEAK
O
Light amount signal (RF/ABCD) peak hold output to the CXD2662R (IC151)
38
RF
O
Playback EFM RF signal output to the CXD2662R (IC151)
39
RFAGC
I
Connected to the external capacitor for RF auto gain control circuit
40
AGCI
I
Receives a RF signal in AC coupling
41
COMPO
O
User comparator output terminal Not used (open)
42
COMPP
I
User comparator input terminal Not used (fixed at “L”)
43
ADDC
I
Connected to the external capacitor for cutting the low band of the ADIP amplifier
44
OPO
O
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
