Ic Pin Functions - Sony MDSJE320 - MiniDisc Recorder Service Manual

6-15. IC PIN FUNCTIONS

• IC101 RF Amplifier (CXA2523R)
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
15 TEMPR
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
• Abbreviation
APC: Auto Power Control
AGC: Auto Gain Control
I/O
I I-V converted RF signal I input
I I-V converted RF signal J input
O Middle point voltage (+1.5V) generation output
I Signal input from the optical pick-up detector
I Light amount monitor input
O Laser APC output
I Reference voltage input for setting laser power
— Ground
I Temperature sensor connection
O Reference voltage output for the temperature sensor
I Serial data input from the CXD2650R or CXD2652AR
I Serial clock input from the CXD2650R or CXD2652AR
I Latch signal input from the CXD2650R or CXD2652AR "L": Latch
I Stand by signal input "L": Stand by
Center frequency control voltage input of BPF22, BPF3T, EQ from the CXD2650R or
I
CXD2652AR
O Reference voltage output (Not used)
I/O Center frequency setting pin for the internal circuit EQ
I/O Center frequency setting pin for the internal circuit BPF3T
— +3V power supply
I/O Center frequency setting pin for the internal circuit BPF22
O Tracking error signal output to the CXD2650R or CXD2652AR
— External capacitor connection pin for the sled error signal LPF
O Sled error signal output to the CXD2650R or CXD2652AR
O FM signal output of ADIP
I ADIP signal comparator input ADFM is connected with AC coupling
— External capacitor connection pin for AGC of ADIP
O ADIP duplex signal output to the CXD2650R or CXD2652AR
I signal/temperature signal output to the CXD2650R or CXD2652AR
3
O
(Switching with a serial command)
O Focus error signal output to the CXD2650R or CXD2652AR
O Light amount signal output to the CXD2650R or CXD2652AR
O RF/ABCD bottom hold signal output to the CXD2650R or CXD2652AR
O RF/ABCD peak hold signal output to the CXD2650R or CXD2652AR
O RF equalizer output to the CXD2650R or CXD2652AR
— External capacitor connection pin for the RF AGC circuit
I Input to the RF AGC circuit The RF amplifier output is input with AC coupling
O User comparator output (Not used)
I User comparator input (Fixed at "L")
I/O External capacitor pin for cutting the low band of the ADIP amplifier
O User operation amplifier output (Not used)
I User operation amplifier inversion input (Fixed at "L")
O RF amplifier output
I Groove RF signal is input with AC coupling
O Groove RF signal output
— 54 —
Function