33
MDS-JB980
SECTION 6
DIAGRAMS
6-1. IC PIN DESCRIPTIONS
• IC101 CXA2523AR (RF AMP/FOCUS, TRACKING ERROR AMP) (BD BOARD)
Pin No.
Pin Name
I/O
Description
I
J
VC
A to F
PD
APC
APCREF
GND
TEMPI
TEMPR
SWDT
SCLK
XLAT
XSTBY
F0CNT
VREF
EQADJ
3TADJ
VCC
WBLADJ
TE
CSLED
SE
ADFM
ADIN
ADAGC
ADFG
AUX
FE
ABCD
BOTM
PEAK
RF
RFAGC
AGCI
COMPO
COMPP
ADDC
OPO
OPN
RFO
MORFI
MORFO
I
I
O
I
I
O
I
—
I
O
I
I
I
I
I
O
I
I
—
I
O
—
O
O
I
—
O
O
O
O
O
O
O
—
I
O
I
—
O
I
O
I
O
I-V converted RF signal I input
I-V converted RF signal J input
Middle point voltage generation output
Signal input from the optical pick-up detector
Light amount monitor signal input
Laser APC signal output
Reference voltage input for setting laser power
Ground
Temperature sensor connection
Reference voltage output for the temperature sensor
Serial data signal input from the CXD2664R (IC201)
Serial clock signal input from the CXD2664R (IC201)
Latch signal input from the CXD2664R (IC201)
“L”: Latch
Stand by signal input
(Fixed at “H”.)
Center frequency control voltage input of BPF22, BPF3T, EQ from the CXD2664R (IC201)
Reference voltage output (Not used in this set.)
Center frequency setting pin for the internal circuit EQ
Center frequency setting pin for the internal circuit BPF3T
Power supply pin (+3.3 V)
Center frequency setting pin for the internal circuit BPF22
Tracking error signal output to the CXD2664R (IC201)
External capacitor connection pin for the sled error signal LPF
Sled error signal output to the CXD2664R (IC201)
FM signal output of ADIP
ADIP signal comparator input
ADFM is connected with AC coupling
External capacitor connection pin for AGC of ADIP
ADIP duplex signal output to the CXD2664R (IC201)
I
3
signal/temperature signal output to the CXD2664R (IC201)
Focus error signal output to the CXD2664R (IC201)
Light amount signal output to the CXD2664R (IC201)
RF/ABCD bottom hold signal output to the CXD2664R (IC201)
RF/ABCD peak hold signal output to the CXD2664R (IC201)
RF equalizer signal output to the CXD2664R (IC201)
External capacitor connection pin for the RF AGC circuit
The RF amplifier output is input with AC coupling
User comparator output (Not used in this set.)
User comparator input (Fixed at “L”.)
External capacitor pin for cutting the low band of the ADIP amplifier
User operation amplifier output (Not used in this set.)
User operation amplifier inversion input (Fixed at “L”.)
RF amplifier signal output
Groove RF signal is input with AC coupling
Groove RF signal output
1
2
3
4 to 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
• Abbreviation
APC: Auto Power Control
AGC: Auto Gain Control
