3-8Pin-descriptions of CD ICs
SERVO PROCESSOR M62475FP
Pin NameDirectionDescription
1-3A, B, CDiode array ? Servo processorCurrent input ( central photo diode signal input )
4-5E, FDiode array ? Servo processorCurrent input ( satellite photo diode signal input )
6SGTServo processor ? Track error ampl. inputSignal generator output to track servo, sends 1700Hz for adjustment procedure
7TE --Inverting input of track error amplifier
8TEGain-Gain control pin of track error amplifier
9TG1-Track Gain 1 - switch: controls the gain of the track servo amplifier
10TE out-Track Error amplifier output
11TC/Shock-Track Cross/Shock detector input
12TS +-Non inverting input of track servo amplifier
13TG2not connectedTrack Gain 2 - switch: controls the gain of the track servo amplifier
14TS --Inverting input of track servo amplifier
15TS outServo processor ? Servo driverOutput of track servo amplifier
16SS +-Non inverting input of slide servo amplifier
17SS --Inverting input of slide servo amplifier
18Slide outServo processor ? Motor driverOutput of slide servo amplifier
19DET.FILTER-Pin for connection of DETection FILter capacitor of ADJUST LOGIC
20BIASServo processor ? external electronicReference Voltage output Vcc/2 of internal BIAS-generator
21GND-Ground connection pin ( negative supply )
22MLA/DIS?P ? Servo processorSerial interface Microprocessor LAtch control / DIScharge control for adjustment
23JP1/SG?P ? Servo processorSerial interface Jump control line / Signal Generator input line for adjustment
24MCK?P ? Servo processorSerial interface Clock input line
25MSD?P ? Servo processorSerial interface Data input line
26DoutServo processor ? ?PSerial interface Data output line
27CLPF-Pin for connection of Low Pass Filter capacitor for ADJUST LOGIC
28IREF-Reference current input
29VCC-Positive supply connection pin ( 4V - 5.5V )
30FSOUTServo processor ? Servo driverOutput of focus servo amplifier
31FS --Inverting input of focus servo amplifier
32FEGain-Gain control pin of focus error amplifier
33FE - -Inverting input of focus error amplifier
34SGFServo processor ? Focus error ampl. inputSignal generator output to focus servo, sends 1300Hz for adjust. procedure
35CFSR-Charge capacitor for Focus Search triangle-generator
36ALPC +-Non inverting input of Automatic Laser Power Control amplifier
37ALPC --Inverting input of Automatic Laser Power Control amplifier
38ALPC OUTServo processor ? Laser driverOutput of Automatic Laser Power Control amplifier
39MRC-Connection pin for capacitor of Mirror detector
40HFServo processor ? DecoderOutput of HF amplifier
41HFI-Inverting input of HF amplifier
42ABC-Sum output of amplified A, B and C input ( central photo diode signal input )
to external ac-coupling capacitor
SIGNAL PROCESSOR M65824FP
Pin NameDirectionDescription
1Anal. VSS-Analog system ground
2ADJCLKnot connectedClock output for servo adjustment; f=88.2kHz
3LOCKnot connectedLock monitor / low disc rotation output
4CKSEL-System clock selection. Low=8.4672MHz, high=16.9344MHz
5RESET?P ? Signal processorSystem reset ( low level = active )
6C423Signal processor ? ?P4.2336MHz clock output
7C846not connected8.4672MHz clock output
8XIX-Tal ? Signal processorCrystal oscillator input
9DVSS-Digital system ground
10XOSignal processor ? X-TalCrystal oscillator output
11TEST-Normal / Test selection input. Testmode = high
12SBCOnot connectedSubcode serial output
13SCCK-Shift clock input for subcode data read
14SYCLKnot connectedFrame lock status output. Lock = high
15EFFKnot connectedEFM frame clock output. Duty = 50%
16KILLBnot connectedDigital silence mute output. Digital zero = low
17EST1not connectedError monitor output 1
18EST2not connectedError monitor output 2
19HFServo processor ? Signal processorHF signal input
20TLC-Slice level control signal output
21LPF-PLL loop filter
22Dig.VDD-Digital interface power supply
23DSPS-Digital system power supply
24SBQSnot connectedInterrupt signal to read out subcode Q data. Read = low
25CRCFnot connectedSubcode Q-channel Cyclic Redundance Check Flag output. CRC o.k.=high level
26SCANDnot connectedSubcode sync signal detection. Sync = high
27PWMSignal processor ? Motor driverDisc motor driving ( Pulse Width Modulation) output
28DVDD2-Digital interface power supply 2
29DVSS2-Digital system ground2
30MCK?P ? Signal processor?P interface shift Clock input
31MSD?P ? Signal processor?P interface Serial Data I/O line
32MLAB?P ? Signal processor?P interface Latch clock input ( internal 22k pull up resistor )
33EXP1? Signal processorVersatile input pin ( internal 4.7k pull up resistor )
34EXP2? Signal processorVersatile input pin ( internal 4.7k pull up resistor )
35CGREF? Signal processorCharge-pump for LPF reference current input
36AMPREFnot connectedOp-amp for LPF reference voltage setting
37LOUT/DOSignal processor ?Audio signal output (left channel) / Ext. DAC mode: Audio serial data output
38LNEGnot connectedCharge pump output (left channel) / Ext. DAC mode: Wordclock output
39ROUT/DSCKSignal processor ?Audio signal output (right channel) / Ext. DAC mode: Data shift clock output
40RNEG/LRCKSignal processor ?Charge pump output (right channel) / Ext. DAC mode: L/R clock output
41IREF-Current reference
42Anal. VDD-Analog System power supply
CS 49 117 |
ACEC
