Philips AZ 7383, Service Manual

Page: 12 / 31

PINNING OF INTEGRATED CIRCUITS
TDA1300T – HF-PREAMPLIFIER AND LASER SUPPLY CIRCUIT (part of CD-drive VAM2103)
Pin Name Direction Description
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
1 O4 HF-preamp
→
CD7 output of current amplifier 4
2 O6 HF-preamp
→
CD7 output of current amplifier 6
3 O3 HF-preamp
→
CD7 output of current amplifier 3
4 O1 HF-preamp
→
CD7 output of current amplifier 1
5 O5 HF-preamp
→
CD7 output of current amplifier 5
6 O2 HF-preamp
→
CD7 output of current amplifier 2
7 LDon CD7
→
HF-preamp control pin for switching the laser on/off
8 Vddl laser power control
→
HF-preamp laser supply voltage
9 Vrfe HF-preamp
→
equalized output voltage of sum signal of amplifiers 1...4
10 Vrf not connected unequalized output
11 HG GND control pin for gain switch
12 LS CD7
→
HF-preamp control pin for double speed switch (switches equalization)
13 C external connection external capacitor (bandwidth of ALPC)
14 Adj
→
HF-preamp reference input
15 GND GND 0V supply, substrate connection
16 Lo HF-preamp
→
laser diode current output to laser diode
17 MI monitor diode
→
HF-preamp laser monitor diode input
18 Vdd +3.5 positive supply voltage
19 I2 GND photo detector input 2 (not used)
20 I5 diode array
→
HF-preamp photo detector input 5 (satellite)
21 I1 diode array
→
HF-preamp photo detector input 1 (central)
22 I3 diode array
→
HF-preamp photo detector input 3 (central)
23 I6 diode array
→
HF-preamp photo detector input 6 (satellite)
24 I4 diode array
→
HF-preamp photo detector input 4 (central)
TC9404FN –
Σ
-
∆
MODULATION DAC WITH ANALOG FILTER
Pin Name Direction Description
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
1 VDD +3 logic power supply
2 T1 GND test pin
3 P/S +3 parallel control input, serial control switching input
4 VDA +3 analog power supply
5 RO DAC
→
sound control audio output right channel
6 GNDA GND analog ground
7 VR
→
DAC reference voltage input
8 GNDA GND analog ground
9 LO DAC
→
sound control audio output left channel
10 VDA +3 analog power supply
11 L/R not connected digital 0 detection output
12 GNDD GND 64fs/256fs/384fs system clock input
13 MCK DAC
→
master clock output
14 GNDX GND crystal oscillator ground
15 XI
→
DAC crystal oscillator input
16 XO DAC
→
crystal oscillator output
17 VDX +3 crystal oscillator power supply
18 BS GND parallel control: de-emphasis filter mode select input
(LATCH) serial control: data latch signal input for ATT;
19 EMP GND parallel control: de-emphasis filter control input
(SHIFT) serial control: shift clock input for ATT;
20 SM GND parallel control: soft mute control input
(ATT) serial control: data input for ATT;
21 HS +3 standard/double speed operation mode switching input
22 DATA NPC
→
DAC data input
23 BCK NPC
→
DAC bit clock input
24 LRCK NPC
→
DAC LR clock input
3-5
CS 46 466