Ic Pin Functions - Sony MDS-JA50ES Service Manual

6-21. IC PIN FUNCTIONS

• IC101 RF Amplifier (CXA1981AR)/BD board
Pin No. Pin Name
1 VC
2 to 7 A to F
8 FI
9 FO
10 PD
11 APCREF
TEMPI
12
13 GND
14 AAPC
15 DAPC
16 TEMPR
17 XRST
18 SWDT
19 SCLK
20 XLAT
21 VREF
22 TENV
23 THLD
24 VCC
25 TFIL
26 TE
27 TLB
28 CSLED
29 SE
30 ADFM
31 ADIN
ADAGC
32
33 ADFG
34 AUX
35 FE
36 FLB
37 ABCD
38 BOTM
39 PEAK
40 RFAGC
41 RF
42 ISET
43 AGCT
RFO
44
45 MORFI
46 MORFO
47, 48 I, J
I/O
Middle point voltage (+2.5V) generation output
O
Input of signal from optical pick-up detector
I
F operation amplifier input
I
F operation amplifier output
O
Front monitor Connected to photo diode
I
Input for setting laser power
I
I Temperature sensor connection pin
Ground
—
APC LD amplifier output
O
Digital APC output (Not used)
O
Temperature sensor reference voltage output
O
Input of reset signal from system controller Reset: "L"
I
Input of write data signal from system controller
I
Input of clock signal from system controller
I
Input of latch signal from system controller
I
Reference voltage output (Not used)
O
Tracking envelop signal output (Not used)
O
Track hold capacitor connection pin
I
Power supply (+5V)
—
Track hold input (Connected to VC)
I
Output of tracking error signal to CXD2535CR
O
Input of add signal to tracking error
I
Sled error LPF pin
I
Output of sled error signal to CXD2535CR
O
ADIP FM signal output
O
Inputs ADIP FM signal by AC coupling
I
I Connection pin of external capacitor for ADIP AGC
Output of ADIP dual FM signal to CXD2535CR (22.05 kHz±1 kHz)
O
Output of auxiliary signal to CXD2535CR
O
Output of focus error signal to CXD2535CR
O
Focus bias control input (Not used)
I
Output of light amount signal to CXD2535CR
O
Output of bottom hold signal of light amount signal to CXD2535CR
O
Output of peak hold signal of light amount signal to CXD2535CR
O
Connection pin of RF AGC circuit external capacitor
I
Output of playback EFM RF signal to CXD2535CR
O
Internal circuit constant setting pin 22 kHz BPF center frequency (Fixed at "H")
I
Inputs RF signal by AC coupling
I
Output pin of RF signal
O
Inputs MO RF signal by AC coupling
I
Output pin of MO RF signal
O
Input of signal from optical pick-up detector
I
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Function