Philips AZ1009 Service Manual page 17

Pin-descriptions of CD ICs
SERVO PROCESSOR M62475FP
Pin Name Direction
Diode array → Servo processor
1-3 A, B, C
Diode array → Servo processor
4-5 E, F
Servo processor → Track error ampl. input
6 SGT
7 TE - -
8 TEGain -
9 TG1 -
10 TE out -
11 TC/Shock -
12 TS + -
13 TG2 not connected
14 TS - -
Servo processor → Servo driver
15 TS out
16 SS + -
17 SS - -
Servo processor → Motor driver
18 Slide out
19 DET.FILTER -
Servo processor → external electronic
20 BIAS
21 GND -
µP → Servo processor
22 MLA/DIS
µP → Servo processor
23 JP1/SG
µP → Servo processor
24 MCK
µP → Servo processor
25 MSD
Servo processor → µP
26 D out
27 C LPF -
28 I REF -
29 V CC -
Servo processor → Servo driver
30 FS
OUT
31 FS - -
32 FEGain -
33 FE - -
Servo processor → Focus error ampl. input
34 SGF
35 C FSR -
36 ALPC + -
37 ALPC - -
Servo processor → Laser driver
38 ALPC
OUT
39 MRC -
Servo processor → Decoder
40 HF
41 HFI -
42 ABC -
SIGNAL PROCESSOR M65824FP
Pin Name Direction
1 Anal. V SS -
2 ADJCLK not connected
3 LOCK not connected
4 CKSEL -
µP → Signal processor
5 RESET
Signal processor → µP
6 C423
7 C846 not connected
X-Tal → Signal processor
8 XI
9 DVSS -
Signal processor → X-Tal
10 XO
11 TEST -
12 SBCO not connected
13 SCCK -
14 SYCLK not connected
15 EFFK not connected
16 KILLB not connected
17 EST1 not connected
18 EST2 not connected
Servo processor → Signal processor
19 HF
20 TLC -
21 LPF -
22 Dig.V DD -
23 DSPS -
24 SBQS not connected
25 CRCF not connected
26 SCAND not connected
Signal processor → Motor driver
27 PWM
28 DVDD2 -
29 DVSS2 -
µP → Signal processor
30 MCK
µP ↔ Signal processor
31 MSD
µP → Signal processor
32 MLAB
→ Signal processor
33 EXP1
→ Signal processor
34 EXP2
→ Signal processor
35 CGREF
36 AMPREF not connected
Signal processor →
37 LOUT/DO
38 LNEG not connected
Signal processor →
39 ROUT/DSCK
Signal processor →
40 RNEG/LRCK
41 IREF -
42 Anal. V DD -
3-8
Description
Current input ( central photo diode signal input )
Current input ( satellite photo diode signal input )
Signal generator output to track servo, sends 1700Hz for adjustment procedure
Inverting input of track error amplifier
Gain control pin of track error amplifier
Track Gain 1 - switch: controls the gain of the track servo amplifier
Track Error amplifier output
Track Cross/Shock detector input
Non inverting input of track servo amplifier
Track Gain 2 - switch: controls the gain of the track servo amplifier
Inverting input of track servo amplifier
Output of track servo amplifier
Non inverting input of slide servo amplifier
Inverting input of slide servo amplifier
Output of slide servo amplifier
Pin for connection of DETection FILter capacitor of ADJUST LOGIC
Reference Voltage output Vcc/2 of internal BIAS-generator
Ground connection pin ( negative supply )
Serial interface Microprocessor LAtch control / DIScharge control for adjustment
Serial interface Jump control line / Signal Generator input line for adjustment
Serial interface Clock input line
Serial interface Data input line
Serial interface Data output line
Pin for connection of Low Pass Filter capacitor for ADJUST LOGIC
Reference current input
Positive supply connection pin ( 4V - 5.5V )
Output of focus servo amplifier
Inverting input of focus servo amplifier
Gain control pin of focus error amplifier
Inverting input of focus error amplifier
Signal generator output to focus servo, sends 1300Hz for adjust. procedure
Charge capacitor for Focus Search triangle-generator
Non inverting input of Automatic Laser Power Control amplifier
Inverting input of Automatic Laser Power Control amplifier
Output of Automatic Laser Power Control amplifier
Connection pin for capacitor of Mirror detector
Output of HF amplifier
Inverting input of HF amplifier
Sum output of amplified A, B and C input ( central photo diode signal input )
to external ac-coupling capacitor
Description
Analog system ground
Clock output for servo adjustment; f=88.2kHz
Lock monitor / low disc rotation output
System clock selection. Low=8.4672MHz, high=16.9344MHz
System reset ( low level = active )
4.2336MHz clock output
8.4672MHz clock output
Crystal oscillator input
Digital system ground
Crystal oscillator output
Normal / Test selection input. Testmode = high
Subcode serial output
Shift clock input for subcode data read
Frame lock status output. Lock = high
EFM frame clock output. Duty = 50%
Digital silence mute output. Digital zero = low
Error monitor output 1
Error monitor output 2
HF signal input
Slice level control signal output
PLL loop filter
Digital interface power supply
Digital system power supply
Interrupt signal to read out subcode Q data. Read = low
Subcode Q-channel Cyclic Redundance Check Flag output. CRC o.k.=high level
Subcode sync signal detection. Sync = high
Disc motor driving ( Pulse Width Modulation ) output
Digital interface power supply 2
Digital system ground2
µP interface shift Clock input
µP interface Serial Data I/O line
µP interface Latch clock input ( internal 22k pull up resistor )
Versatile input pin ( internal 4.7k pull up resistor )
Versatile input pin ( internal 4.7k pull up resistor )
Charge-pump for LPF reference current input
Op-amp for LPF reference voltage setting
Audio signal output (left channel) / Ext. DAC mode: Audio serial data output
Charge pump output (left channel) / Ext. DAC mode: Wordclock output
Audio signal output (right channel) / Ext. DAC mode: Data shift clock output
Charge pump output (right channel) / Ext. DAC mode: L/R clock output
Current reference
Analog System power supply
CS 49 117