SECTION 3
DIAGRAMS
3-1. IC PIN DESCRIPTIONS
Y IC501 CXD2598Q (DIGITAL SERVO, DIGITAL SIGNAL PROCESSOR) (SERVO BOARD)
Pin No.Pin NameI/OPin Description
1DVDDNDigital power supply pin
2DVSSNDigital ground
3SOUTOServo brock serial data output (Not used.)
4SOCKOServo brock serial data read clock output (Not used.)
5XOLTOServo brock serial data latch output (Not used.)
6SQSOOSub Q 80 bit, PCM peak and level data output. CD TEXT data output
7SQCKIClock input from SQSO read output.
8SCSYIFixed at OL�.
9SBSOOSerial output of sub-P to W. (Not used.)
10EXCKIClock input from SBSO read output. (Fixed at OL�)
11XRSTISystem reset (OL�: Reset)
12STSMISystem mute input (Fixed at OL�)
13DATAISerial data input from CPU.
14XLATILatch input from CPU. Latch serial data at the falling edge.
15CLOKISerial data transfer clock input from CPU.
16SENSOSENS output for CPU.
17SCLKIClock input from SENS serial data read.
18ATSKI/OInput/output for anti-shock.
19WFCKOWFCK (Write Flame Clock) output (Not used.)
20XUGFOXUGF output (Not used.)
21XPCKOXPCK output (Not used.)
22GFSOGFS output
23C2POOC2PO output (Not used.)
24SCOROOH� output at either detection, sub code sync S0 or S1.
25C4MO4.2336 MHz output (Not used.)
26WDCKOWord clock input f=2Fs (Not used.)
27COUTI/OTrack number count signal input/output (Not used.)
28MIRRI/OMirror signal input/output (Not used.)
29DVSSNDigital ground
30DVDDNDigital power supply pin
31DFCTI/ODiffect signal input/output (Not used.)
32FOKI/OFocus OK signal output
33PWM1IExternal control input of spindle motor.
34LOCKI/OLock signal input/output
35MDPOServo control output of spindle motor.
36SSTPIDisc most inner track detection signal input
37FSTIOI/O2/3 frequency division output of pins ih and ij. (Not used.)
38SFDROSled drive output
39SRDROSled drive output
40TFDROTracking drive output
41TRDROTracking drive output
42FFDROFocus drive output
43FRDROFocus drive output
44DVDDNDigital power supply pin
45DVSSNDigital ground
46TESTITest pin (FixOLed at �)
47TES1ITest pin (FixOL�ed at )
48XTSLIXOtal select input (OL�: 16.9344 MHz, OH�: 33.8688 MHz)
49VCICenter voltage input
50FEIFocus error signal input
51SEISled error signal input
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