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6-9. IC PIN FUNCTION DESCRIPTION
• IC501 SN761056CDBT (RF AMP, FOCUS/TRACKING ERROR AMP)
Pin No. Pin Name I/O Description
1 TE O Tracking error signal output to the CXD2661GA (IC601)
2 REXT — Connected to the external resistor for the ADIP amplifier control
3 WPPLPF — Connected to the external capacitor for low-pass filter of the TPP/WPP
4 VREF11 O Reference voltage output terminal (+1.1V)
5 C I Signal (C) input from the optical pick-up detector
6 D I Signal (D) input from the optical pick-up detector
7 D-C I Signal (D) input from the optical pick-up detector (AC input)
8 IY I I-V converted RF signal (IY) input from the optical pick-up block detector
9 IX I I-V converted RF signal (IX) input from the optical pick-up block detector
10 JX I I-V converted RF signal (JX) input from the optical pick-up block detector
11 JY I I-V converted RF signal (JY) input from the optical pick-up block detector
12 A I Signal (A) input from the optical pick-up detector
13 A-C I Signal (A) input from the optical pick-up detector (AC input)
14 B I Signal (B) input from the optical pick-up detector
15 TON-C — Connected to the external capacitor for the TON hold
16 CIG — Connected to the external capacitor for low-pass filter of the NPP divider denominator
17 CDN — Connected to the external capacitor for low-pass filter of the CSL divider denominator
18 PD-NI I Light amount monitor input terminal (non-invert input)
19 PD-I I Light amount monitor input terminal (invert input)
20 PD-O O Light amount monitor output terminal
21 ADFG O ADIP duplex FM signal (22.05 kHz ± 1 kHz) output to the CXD2661GA (IC601)
22 DVDD — Power supply terminal (+2.4V) (digital system)
23 SBUS I/O Two-way SSB serial data bus with the system controller (IC801)
24 SCK I SSB serial clock signal input from the system controller (IC801)
25 XRST I Reset signal input from the system controller (IC801) “L”: reset
26 OFTRK I Off track signal input from the CXD2661GA (IC601)
27 DGND — Ground terminal (digital system)
28 BOTM O Light amount signal (RF/ABCD) bottom hold output to the CXD2661GA (IC601)
29 PEAK O Light amount signal (RF/ABCD) peak hold output to the CXD2661GA (IC601)
30 VREF075 — Connected to the external capacitor for the internal reference voltage
31 VC O Middle point voltage (+1.2V) generation output terminal
32 CCSL2 — Connected to the external capacitor for low-pass filter of the TPP/WPP
33 RF OUT O Playback EFM RF signal output to the CXD2661GA (IC601)
34 AGND — Ground terminal (analog system)
35 EQ — Connected to the external capacitor for the RF equalizer
36 LP — Connected to the external capacitor for the RF equalizer
37 PS — Connected to the external capacitor for the RF equalizer
38 OFC-2 — Connected to the external capacitor for the RF AC coupling
39 OFC-1 — Connected to the external capacitor for the RF AC coupling
40 AVCC — Power supply terminal (+2.4V) (analog system)
41 ABCD O Light amount signal (ABCD) output to the CXD2661GA (IC601)
42 FE O Focus error signal output to the CXD2661GA (IC601)
43 S-MON O Servo signal monitor output to the system controller (IC801)
44 ADIP-IN I ADIP duplex FM signal (22.05 kHz ± 1 kHz) input terminal (not used in this set)