6-6. Ic Pin Function Description - Sony MZ-R91 Service Manual

6-6. IC PIN FUNCTION DESCRIPTION

• MAIN BOARD IC501 SN761056ADBT (RF AMP, FOCUS/TRACKING ERROR AMP)
Pin No. Pin Name
1 TE
2 REXT
3 WPPLPF
4 VREF11
5 C
6 D
7 D-C
8 IY
9 IX
10 JX
11 JY
12 A
13 A-C
14 B
15 TON-C
16 CIG
17 CDN
18 PD-NI
19 PD-I
20 PD-O
21 ADFG
22 DVDD
23 SBUS
24 SCK
25 XRST
26 OFTRK
27 DGND
28 BOTM
29 PEAK
30 VREF075
31 VC
32 CCSL2
33 RF OUT
34 AGND
35 EQ
36 LP
37 PS
38 OFC-2
39 OFC-1
40 AVCC
41 ABCD
42 FE
43 S-MON
44 ADIP-IN
I/O
O Tracking error signal output to the CXD2660GA (IC502)
— Connected to the external resistor for the ADIP amplifier control
— Connected to the external capacitor for low-pass filter of the TPP/WPP
O Reference voltage output terminal (+1.1V)
I Signal input from the optical pick-up detector (C)
I Signal input from the optical pick-up detector (D)
I Signal input from the optical pick-up detector (D) (AC input)
I I-V converted RF signal IY input from the optical pick-up block detector
I I-V converted RF signal IX input from the optical pick-up block detector
I I-V converted RF signal JX input from the optical pick-up block detector
I I-V converted RF signal JY input from the optical pick-up block detector
I Signal input from the optical pick-up detector (A)
I Signal input from the optical pick-up detector (A) (AC input)
I Signal input from the optical pick-up detector (B)
— Connected to the external capacitor for the TON hold
— Connected to the external capacitor for low-pass filter of the NPP divider denominator
— Connected to the external capacitor for low-pass filter of the CSL divider denominator
I Light amount monitor input terminal (non-invert input)
I Light amount monitor input terminal (invert input)
O Light amount monitor output terminal
ADIP duplex FM signal (22.05 kHz ± 1 kHz) output to the CXD2660GA (IC502)
O
— Power supply terminal (+2.4V) (digital system)
I/O Two-way SSB serial data bus with the system controller (IC801)
I SSB serial clock signal input from the system controller (IC801)
I Reset signal input from the system controller (IC801) "L": reset
I Off track signal input from the CXD2660GA (IC502)
— Ground terminal (digital system)
O Light amount signal (RF/ABCD) bottom hold output to the CXD2660GA (IC502)
O Light amount signal (RF/ABCD) peak hold output to the CXD2660GA (IC502)
— Connected to the external capacitor for the internal reference voltage
O Middle point voltage (+1.2V) generation output terminal
— Connected to the external capacitor for low-pass filter of the TPP/WPP
O Playback EFM RF signal output to the CXD2660GA (IC502)
— Ground terminal (analog system)
— Connected to the external capacitor for the RF equalizer
— Connected to the external capacitor for the RF equalizer
— Connected to the external capacitor for the RF equalizer
— Connected to the external capacitor for the RF AC coupling
— Connected to the external capacitor for the RF AC coupling
— Power supply terminal (+2.4V) (analog system)
O Light amount signal (ABCD) output to the CXD2660GA (IC502)
O Focus error signal output to the CXD2660GA (IC502)
O Servo signal monitor output to the system controller (IC801)
ADIP duplex FM signal (22.05 kHz ± 1 kHz) input terminal Not used
I
Description
– 46 –