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— 61 —
6-21. IC PIN FUNCTIONS
• IC101 RF Amplifier (CXA1981AR)/BD board
Pin No.
I/O
Description
Pin Name
1
2 to 7
8
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
VC
A to F
FI
FO
PD
APCREF
TEMPI
GND
AAPC
DAPC
TEMPR
XRST
SWDT
SCLK
XLAT
VREF
TENV
THLD
VCC
TFIL
TE
TLB
CSLED
SE
ADFM
ADIN
ADAGC
ADFG
AUX
FE
FLB
ABCD
BOTM
PEAK
RFAGC
RF
ISET
AGCT
RFO
MORFI
MORFO
I, J
O
I
I
O
I
I
I
—
O
O
O
I
I
I
I
O
O
I
—
I
O
I
I
O
O
I
I
O
O
O
I
O
O
O
I
O
I
I
O
I
O
I
Middle point voltage (+2.5V) generation output
Input of signal from optical pick-up detector
F operation amplifier input
F operation amplifier output
Front monitor Connected to photo diode
Input for setting laser power
Temperature sensor connection pin
Ground
APC LD amplifier output
Digital APC output (Not used)
Temperature sensor reference voltage output
Input of reset signal from system controller Reset: “L”
Input of write data signal from system controller
Input of clock signal from system controller
Input of latch signal from system controller
Reference voltage output (Not used)
Tracking envelop signal output (Not used)
Track hold capacitor connection pin
Power supply (+5V)
Track hold input (Connected to VC)
Output of tracking error signal to CXD2535CR
Input of add signal to tracking error
Sled error LPF pin
Output of sled error signal to CXD2535CR
ADIP FM signal output
Inputs ADIP FM signal by AC coupling
Connection pin of external capacitor for ADIP AGC
Output of ADIP dual FM signal to CXD2535CR (22.05 kHz±1 kHz)
Output of auxiliary signal to CXD2535CR
Output of focus error signal to CXD2535CR
Focus bias control input (Not used)
Output of light amount signal to CXD2535CR
Output of bottom hold signal of light amount signal to CXD2535CR
Output of peak hold signal of light amount signal to CXD2535CR
Connection pin of RF AGC circuit external capacitor
Output of playback EFM RF signal to CXD2535CR
Internal circuit constant setting pin 22 kHz BPF center frequency (Fixed at “H”)
Inputs RF signal by AC coupling
Output pin of RF signal
Inputs MO RF signal by AC coupling
Output pin of MO RF signal
Input of signal from optical pick-up detector
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