KA9220C KA9220C 1-Chip BiCMOS integrated circuits that performs f

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KA9220C KA9220C 1-Chip BiCMOS integrated circuits that performs f

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KA9220C
KA9220C 1-Chip BiCMOS integrated circuits that performs functions (Servo Signal Processor) applications. consists signal processor, focus servo, tracking servo, sled servo control, detecting automatic power control circuits.
80-QFP-1420C
FEATURES
amplifier Focus error amplifier Tracking error amplifier Mirror detector Focus detector Comparator auto-asymmetry control amplifier Defect detector improvement playability Built-in (automatic power control) amplifier (Focus, Tracking, sled, spindle servo control) Built-in autosequencer Anti-shock function function preventing sled away Double speed operation available Operating supply voltage range: 5.5V
ORDERING INFORMATION
Device KA9220C Package 80-QFP-1420C Operating Temperature -20°C +75°C
DVEE(S)
AVEE(S)
SSTOP TESPFSET
TRCNT
RESET
TEST1
LOOP FILTER CMOS VREG &VIC COMPARATOR CMOS
TEST2 ISTAT SLEO SLEI
EFMO
MDAT
AASC
SLEN
DIRC
APDI
ISET
MIRR COMPARATOR
AVCC(S)
VREGI
1-TIME 2-TIMES
TDFCT
VREG LOCK SMPD SMON SMEF DVCC(S) SPDI SPDLO WDCH TESTD LDON
TKEI
TKEO
AVCC(RF)
TRACKING PHASE COMPARATOR MICOM SERVO CONTROL AUTO SEQUENCER
TGSW
WINDOWS COMPARATOR
DEFECT COMPARATOR TRACKING ERROR
FOCUS COMPARATOR
FOCUS PHASE COMPENSATION
FSCH
FOCUS ERROR
FDFCT
FSEO
BLOCK DIAGRAM
DCC2
DCC1
AVEE(RF)
FBIAS
HFGD
KA9220C
KA9220C
DESCRIPTION
Symbol AVEE TESTD TESTEST1 PFSET SSTOP DlRC AVCC WDCH SMPD SMON TGSW HFGD FSCH VREGl ISET VREG SMEF MDAT RESET Description Analog negative power supply input part Capacitor connection mirror hold Capacitor connection defect bottom-hold Defect test Mirror test Input test Peak frequency setting focus, tracking compensation (cut frequency) Check position pick-up whether inside Direct Track Jump Control Analog positive power supply input SERVO part Auto-sequencer clock-input (Normal speed 88.2 kHz, Double speed 176.4kHz) Connection SMPD Connection SMON, spindle servo connection Providing time constant change high frequency tracking gain Capacitor connection switch tracking gain high frequency Capacitor connection perform rising bandwidth focus servo loop High frequency gain focus servo loop changed switch Reducing high frequency gain with capacitor connected between pin18 Time constant external generate focus search waveform External regulator voltage input Determing peak value focus search, track jump SLED kick 3.5V regulator output connection Providing external time constant SERVO Loop connection Clock input from micom Latch input from micom Data input from micom Reset input from micom, reset
KA9220C
DESCRIPTION (Continued)
Symbol LOCK TRCNT ISTAT AVEE APDI AASC EFMO SLEN SLEO SLEl TEST2 SPDl SPDLO FSEO TKEl TKEO TDFCT DVCC FDFCT LDON Description operation sled runaway prevention function Track count output Internal status output Analog negative power supply input SERVO part connection connection Auto-Asymmetry control input comparator output Non-inverting input SLED SERVO amplifier Output SLED SERVO amplifier Inverting input SLED SERVO amplifier Test input change speed mode Normal speed "H", Double speed Inverting input spindle servo amplifier Spindle servo amplifier output Inverting input focus servo amplifier Output focus servo amplifier Non-inverting input tracking servo amplifier Output tracking servo amplifier connection Anti-shock input Tracking Zero Crossing input Tracking Error Servo input Output tracking Error Amplifier Capacitor Connection Defect Compensation tracking servo Digital positive power supply input servo part Focus error servo input Output focus error Amplifier Capacitor connection defect compensation focus servo Output Focus comparator. Laser diode ON/OFF control Feedback input amplifier
KA9220C
DESCRIPTION (Continued)
Symbol FBlAS DVEE RFRV AVEE (RF) DCC2 DCC1 Output Amplifier Bias non-inverting input focus error amplifier Digital negative power supply input servo part Output Signal summing amplifier input through capacitor Output summing amplifier Inverting input summing amplifier Output (AVCC AVEE)/2 Voltage Bias input Center Voltage buffer Output amplifier Input amplifier Analog positive power supply input part connection Inverting input AMP2 Inverting input AMP1 Inverting input Inverting input Selecting P-sub/N-sub Laser diode Defect bottom hold output inputted through capacitor Output defect bottom-hold Description
KA9220C
ABSOLUTE MAXIMUM RATINGS 25°C)
Characteristic Supply Voltage Power Dissipation Operating Temperature Storage Temperature VMAX TOPR TSTG Symbol Value Unit
ELECTRICAL CHARACTERISTICS
25°C, AVCC DVCC 2.5V, DVEE -2.5V, unless otherwise specified)
Characteristic Supply Current Output Offset Voltage Voltage Gain Maximum Output Amplitude Symbol V001 VOH(MAX)1 VOL(MAX)1 V002 DGV1 VOH(MAX)2 VOL(MAX)2 0.2VDC Output: Peak Voltage 0.2VDC Output: Peak Voltage Test Conditions Input Output Min. Typ. 28.1 Max. 31.1 Unit
1kHz, 40mVp-p Sinewave 0.2VDC Output: Peak Voltage -0.2VDC Output: Peak Voltage
Pin74 Pin74 Pin74
Pin66 Pin66 Pin66 Pin66 Pin57 Pin57 Pin57
25.1
30.0 30.0
-0.3
33.0 33.0
Maximum Output Amplitude Focus Error Output Offset Voltage Voltage Gain Voltage Gain Gain Difference Maximum Output Amplitude Maximum Output Amplitude
-120
27.0 27.0
kHz, 40mVp-p Sinewave
Pin74
Pin74 Pin74
Pin57 Pin57
-1.9
KA9220C
ELECTRICAL CHARACTERISTICS (Continued)
25°C, AVCC DVCC 2.5V, AVEE DVEE -2.5V, unless otherwise specified)
Characteristic Tracking Error Output Offset Voltage Voltage Gain Voltage Gain Gain difference Maximum Output Amplitude Maximum Output Amplitude Output Voltage Output Voltage Output Voltage Output Voltage Output Voltage Output Voltage Maximum Output Amplitude Maximum Output Amplitude Threshold Voltage High Output Voltage Output Voltage MIRR High Output Voltage Output Voltage Bottom hold frequency operation frequency Symbol VOO3 VOH(MAX)3 VOL(MAX)3 VOH(MAX)4 VOL(MAX)4 VTHI VOH(FOX)1 VOL(FOK)1 VOH(MIR)1 VOL(MIR)1 FRES(B) f1(MAX)1 =900kHz, -0.4mVDC 0.8Vp-p Sinewave 30kHz,-0.4mVDC 0.8Vp-p Sinewave 10kHz,-0.4mVDC 0.8V Sinewave 0.2VDC Output: Peak Voltage 0.2VDC Output: Peak Voltage Test Conditions Input Output Pin53 Pin53 Pin53 Min. Typ. 10.0 10.0 Max. 13.0 13.0 Unit
kHz, 0.3Vp-p Sinewave
Pin76 Pin77
Pin76 Pin76 Pin71 Pin71 Pin71 Pin71 Pin71 Pin71 Pin70
Pin53 Pin53 Pin70 Pin70 Pin70 Pin70 Pin70 Pin70 Pin70
-1.9
-380
-1.0 -1.0 -1.0
-0.8
Pin70
Pin70
-430
45kHz, -375mVDC 1Vp-p Sinewave
Pin65 Pin65 Pin65 Pin65 Pin65 Pin65
Pin59 Pin59 Pin59 Pin5 Pin5 Pin5
-330 -1.8
-2.2
Pin65
Pin5
KA9220C
ELECTRICAL CHARACTERISTICS (Continued)
25°C, AVCC DVCC 2.5V, DVEE -2.5V, unless otherwise specified)
Characteristic Defect High Output Voltage Output Voltage Minimum input Operating Frequency Maximum input Operating Frequency Duty Cycle Duty Cycle Focus Servo Voltage Gain Output Voltage Output Voltage Output Voltage Output Voltage Search Output Voltage Search Output Voltage Gain Gain Symbol VOH(DEF)1 VOL(DEF)1 f1(MIN) 1kHz, 15mVDC 32Vp-p Sinewave kHz, 15mVDC 32Vp-p Sinewave kHz, 0VDC 0.7Vp-p Sinewave kHz, 0.25VDC Sinewave 0.1VDC 0.5VDC -0.5VDC 0.5VDC -0.5VDC Data Data 1.2kHz, 100mVp-p Sinewave, 1.2kHz, 100mVp-p Sinewave, Test Conditions 1kHz, 15mVDC mVp-p Sinewave Input Pin74 Pin74 Pin74 Output Pin4 Pin4 Pin4 Min. Typ. Max. Unit
-2.2 1000
f1(MAX)2
Pin74
Pin4
VO(DC)1 VO(FCS)1 VO(FCS)2 VO(FCS)3 VO(FCS)4 VO(SEARCH)1 VO(SEARCH)2 GV(AC)1 GV(AC)2
Pin56 Pin56 Pin56 Pin56 Pin56 Pin56 Pin56 Pin56 Pin56 Pin56 Pin56
Pin37 Pin37 Pin46 Pin46 Pin46 Pin46 Pin46 Pin46 Pin46 Pin46 Pin46
19.0 1.98
21.5
24.0
-1.98
-1.18 -0.38 0.63 27.0 23.0
1.18
-0.63 -0.50
0.38 19.0 14.0 0.50 23.0 18.5
KA9220C
ELECTRICAL CHARACTERISTICS (Continued)
25°C, AVCC DVCC 2.5V, AVEE DVEE -2.5V, unless otherwise specified)
Characteristic Tracki Servo Voltage Gain Output Voltage Output Voltage Output Voltage Output Voltage Jump Output Voltage Jump Output Voltage Gain Gain Sled Servo Voltage Gain Output Voltage Output Voltage Sled Servo Output Voltage Kick Output Voltage Kick Output Voltage Spindle Servo Voltage Gain Output Voltage Output Voltage Output Voltage Output Voltage Regulator Output Voltage Maximum Output Amplitude Maximum Output Amplitude Symbol GV(DC)2 VO(TCK)1 VO(TCK)2 VO(TCK)3 VO(TCK)4 VO(JUMP)1 VO(JUMP)2 GV(AC)3 GV(AC)4 GV(DC)3 VO(SLD)1 VO(SLD)2 VO(SLD)4 VO(KICK)1 VO(KICK)2 GV(DC)4 VO(SPD)1 VO(SPD)2 VO(SPD)3 VO(SPD)4 VREG VOH(MAX)5 VOL(MAX)5 Test Conditions -0.2VDC -1.5VDC 1.5VDC -1.5VDC 1.5VDC Input Pin65 Pin52 Pin52 Pin74 Pin74 Output Pin48 Pin48 Pin48 Pin48 Pin48 Pin48 Pin48 Pin48 Pin48 Pin40 Pin40 Pin40 Pin40 Pin40 Pin40 Pin44 Pin44 Pin44 Pin44 Pin44 Min. 13.5 1.98 Typ. 15.5 Max. 17.5 Unit
-0.50 0.50 12.5 21.5 23.0
-1.98 -1.18 -0.38
0.63 16.0 25.5 25.0
1.18
-0.63 0.38 17.5 21.0 1.98
1.2kHz, 100mVp-p Sinewave 2.7kHz, 100mV Sinewave 0.1VDC 0.4VDC -0.4VDC 0.4VDC
Pin52 Pin52 Pin39 Pin39 Pin39 Pin39
0.59
-1.98 -1.18 0.73
0.45
0.2VDC 1.0VDC -1.0VDC 1.0VDC -1.0VDC
Pin12 Pin12 Pin12 Pin12 Pin12 Pin74 Pin74 Pin74
-0.73 -0.59 -0.45
14.0 1.78 16.0 18.0
3.47
-1.78 -1.13
3.65
1.13
3.30
0.2VDC Output: Peak Voltage Output: -Peak Voltage -0.2VDC
Pin66 Pin66
-0.3
KA9220C
ELECTRICAL CHARACTERISTICS (Continued)
25°C, AVCC DVCC 2.5V, DVEE -2.5V, unless otherwise specified)
Characteristic Focus Error Maximum Output Amplitude Maximum Output Amplitude Symbol VOH(MAX)6 VOL(MAX)6 Test Conditions 0.2VDC Output: Peak Voltage 0.2VDC Output: Peak Voltage 0.2VDC Output: Peak Voltage 0.2VDC Output: Peac Voltage 190mV 90mV 100mV 170mV Pin74 Pin76 Pin71 Pin71 Pin71 Pin71 Pin71 Pin71 Pin65 Pin65 Pin65 Pin65 Pin65 Pin74 Pin74 Pin65 Pin53 Pin53 Pin70 Pin70 Pin70 Pin70 Pin70 Pin70 Pin59 Pin59 Pin59 Pin5 Pin5 Pin4 Pin4 Pin37 Input Pin74 Pin74 Output Pin57 Pin57 Min. Typ. Max. Unit
-1.1
Tracking Error
Maximum Output Amplitude Maximum Output Amplitude Output Voltage Output Voltage Output Voltage Output Voltage Output Voltage Output Voltage
VOH(MAX)7 VOL(MAX)7 VTH2 VOH(FOK)2 VOL(FOK)2 VOH(MIR)2 VOL(MIR)2 VOH(DEF)2 VOL(DEF)2
-380
-1.1 -0.2
-0.2 -330 -1.0 -1.2 -1.2
-430
Threshold Voltage Output Voltage High Output Voltage
45kHz, -375mV 1Vp-p Sinewave 10kHz, -0.4V 0.8Vp-p Sinewave 1kHz, 15mVDC 32Vp-p Sinewave 750kHz, 0VDC 0.7Vp-p Sinewave 750kHz, 0.25VDC Sinewave
Mirror
Output Voltage High Output Voltage
Defect
High Output Voltage Output Voltage
Duty Cycle
Duty Cycle
Pin65
Pin37
KA9220C
ELECTRICAL CHARACTERISTICS (Continued)
25°C, AVCC DVCC 2.5V, AVEE DVEE -2.5V, unless otherwise specified)
Characteristic Focus Servo Output Voltage Output Voltage Search Output Voltage Search Output Voltage Track -ing Servo Output Voltage Output Voltage Output Voltage Jump Output Voltage Jump Output Voltage Sled Servo Output Voltage Output Voltage Kick Output Voltage Kick Output Voltage Spindle Servo Output Voltage Output Voltage Symbol VO(fcs)5 VO(fcs)6 VO(SEARC)3 VO(SEARC)4 VO(Tck)5 VO(Tck)5 VO(Tck)6 VO(JUMP)3 VO(JUMP)4 VO(SLD) VO(SLD) VO(KICK)3 VO(KICK)4 VOH(SPD)5 VOL(SPD)6 Test Conditions 0.5VDC -0.5VDC Input Pin56 Pin56 Output Pin46 Pin46 Pin46 Pin46 Pin48 Pin48 Pin48 Pin48 Pin48 Pin40 Pin40 Pin40 Pin40 Pin44 Pin44 -0.63 0.38 1.18 1.18 Min. 1.18 Typ. Max. Unit
-0.50 0.50
-1.18
-0.38 0.63
-1.5VDC -1.5VDC
Pin52 Pin52 Pin52
-1.18
0.4VDC -0.4VDC
Pin39 Pin39
-0.63 -0.50 -0.38
0.38 1.18 0.50 0.63
0.54
-1.18
0.68
0.40
1.0VDC -1.0VDC
Pin12 Pin12
-0.68 -0.64 -0.40
0.98
-0.98
VEE(-2.5V)
VCC(2.5V)
SG56
SG59
SG52
SG51
SG50
0.14K
0.14K
180pF
0.14K
0.14K 100K 100K 200K 200K 100K
470K
SG65
470K
SG39
0.01uF
KA9220C
SG74 390K SG77 390K
3300pF
SG31
SG30
SG29
SG28
240K
2.7K
SG27
1000pF 510K 3300pF SG12
TEST CIRCUIT
SG11
22uF
KA9220C
KA9220C
DESCRIPTION FUNCTION
BLOCK Description KA9220C designed 3-spot type optical pick-up assembly. photo detector composed light sensor through photo detector detect audio modulation signal disc generate focus error signals. photo detectors generate tracking error signal. Amplifier
iPD1
AMP(1)
SUMMING
Photo Detector iPD2
AMP(2)
Figure amplifier converted current through Kohm Internal resistor into Voltage. Furthermore, they added Summing amplifier. This signal output from (Pin 66). output Voltage follow. (iPD1 +iPD2)
-22K
-2.2
KA9220C
Tracking Error Amplifier
PITS 260K
(A+B+C+D) PHOTO DETECTOR
12pF
Tracking Error
12pF
260K
Figure Tracking Error Amplifier output photo detector directed input I-VAMP photo detector directed input AMP. These input signals current. converted into voltage from current signal. When tracking, correctly input (VF, signals equal. occurence tracking error difference between output output. 260K 273K 403K 260K 260K)
accordingly, VTE1 1290K
KA9220C
Focus Error Amplifier
25pF
174K (A+C) (B+D)
25pF 161K
FBIAS
Figure Focus Error Amplifier focus error difference between output output This signals each applied input focus error amp. result differential voltage, focus error signal appears (Pin57). This output voltage (low frequency) becomes follow VFE1 1/R3 focus error voltage directed focus servo block, maintain optimum focusing times. Focus Generation Circuit
from summing 0.01µ
FOCUS
FOCUS Comparator
from level shifter
Figure Focus Generation Circuit focus circuit generates timing window monitor focus search status focus servo. When (Pin voltage more than 0.37 focus circuit inverted. Time constant comparator mirror circuit that focus circuit determined capacitor (0.01µF) between RFO.
KA9220C
Mirror Circuit
2.5K
2.5K
1.5K Peak Bottom hold
23PF
TES
Figure Mirror Circuit After input signal amplified Mirror amp, held Bottom Peak hold circuit. Such hold determined time constant. Envelope signal (demodulated two-thirds peak value this signal time constant signal held when larger than that signal. Therefore, mirror output track disc, High between tracks disc, High when defect detected. Defect Circuit
DCC1 Defect
0.033µF
DCC2
37.5K BIAS
Defect Bottom Hold
Defect Bottom hold Defect Comparator TESTD
0.01µF
Figure Defect Circuit
KA9220C
bottom hold time constants long short, after then, signal inverted. short time constant bottom hold generated shorter than 0.1m disc mirror defect, long time constant generated previous mirror level. Mirror defect detection signals generated differentiation capacitor coupling,and then transfer level. Comparator
Comparator 3.2PF
Auto Asymmetry Control Auto Asymmetry Butter
EFMO
100K
AASC
100K
8.5K
Figure Comparator Comparator converts Signal into binary signal. processing disc production occurs disproportionately because modifications disc, reduced only coupling. reference voltage comparator controlled utilizing fact that generation-probability (duty) binary signal.
KA9220C
(AUTOMATIC POWER CONTROL) CIRCUIT Single Power Supply P-sub Laser
300K 100µ 0.75K
150K 150K
150K
10µH
Figure Single Power Supply P-sub Laser Single Power Supply N-sub Laser
300K 100µ 0.75K
150K 150K
150K
10µH
Figure Single Power Supply N-sub Laser Laser diode large negative temperature chararteristic, when does something regularly supply current. Therefore, output from processing monitor photo diode must controlled regularize power output. This circuit composed single power supply operation. This circuit P-sub N-sub laser diode, according application circult.
KA9220C
SERVO BLOCK
Focus Servo Block
3.6K
470K 0.1uF 0.1uF FDFCT HFGD
FSEO 100K 130K 470K 240K VREG 5.5u ISET FOCUS COIL
PHASE COMPENSATION
DFCT
560K
PFSET
FSCH
0.1uF
510K
0.1uF
4.7uF
Figure Focus Servo Block When defect signal detected, focus servo loop isolated. this time, focus servo error output through pass filter formed connecting capacitor (0.1 between built-in resistor FDFCT (pin 58). Accordingly, focus error output held previous error value during defect. peak frequency focus phase compensation about when resistor connected PFSET (Pin7) inversely proportional resistor connected While focus search operating, switch then Focus error signal isolated. Accordingly, output FSEO (Pin 48). When switch focus servo loop focus error output through focus servo loop.
KA9220C
Tracking Sled Servo Loop
0.022UF
100K 100K SSTOP 100K SSTOP
0.047UF
SLEO SLEI 120K 8.2K SLEN 3.3UF
SLED DRIVER
0.1UF TDFCT DFCT 470K
100K
680K 66PF
PHASE COMPENSATION
5.5U
0.033UF TGSW 470K 110K
5.5U
PFSET 510K
Figure Tracking Sled Servo Loop capacitor across (Pin16) TGSW (Pin15) reduces high frequency gain when switch OFF. Peak frequency tracking phase compensation about when resistor connected PFSET (Pin7) inversely proportional resistor connected tracking error signal switched into pass filter route formed connecting capacitor between built resistor DFCT (470K) Pin54 (TDFCT).
TKEI TKEO
100K
TRACKING COIL
KA9220C
Spindle Servo Pass Filter
20.5K SMON
220K 100K
220K 100K
SMPD
220K SPDI
SMDS SMEF 0.47UF
SMEF
PFSET 510K
0.033UF
Figure Spindle Servo Pass Filter 0.033 connected (SMEF) form LPF. carrier component spindle servo error signals eliminated. mode, SMEF becomes Pin25 lowers, further strengthening filter
SPDLO
SPINDLE DRIVER
KA9220C
COMMANDS
Serial Interface Timing Chart
MDATA
tWCK
1/fck
Figure Serial Interface Timing Chart
Item Clock frequency Clock pulse width Hold time Setup time Delay time Latch pulse width
Symbol
Min. 1000
Typ.
Max.
Unit
fwck
KA9220C
HEXA Commands This command controls focus servo Loop.
charged (11µA 5.5µA) 0.275V. Pin46 voltage level follows; (11µA 5.5µA) feed back resistor focus search voltage produced
Figure SWITCH $00- Focus servo $08- Focus servo $1X. This command controls tracking servo Loop Gain Break circuIt
Anti Shock ON/OFF
Break Circuit ON/OFF
Tracking control SERVO Jump Jump TM1, TM3,
SLED Control SERVO Kick Kick TM2, TM5,
KA9220C
4.$3X. SLED Normal Kick Focus Search Peak Focus earch (PS3) (PS2) SLED Kick Peak (PS1) (PS0) Relative value
auto sequencer commands.
KA9220C
OTHER DIRC
latch DIRC JUMP JUMP
latch
TRACKING SERVO SLED SERVO
Figure LOCK (Sled runaway prevention circuit)
LOCK
SLED SERVO TG1,
TRACKING GAIN DOWN
Figure DEFECT (Disc defect countermeasure circuit)
DEFECT FOCUS SERVO TRACKING SERVO
Figure
KA9220C
System Control
Item
HEXA
Address Focus Anti Shock
Data Searc Gain Sled Mode Sled KICK SearcH
ISTAT
Focus Control
Gain Down Break
Tracking Conrol Tracking Mode Select
Gain STOP Sled KICK
Tracking Mode Focus SearcH 0.18 Focus SearcH 0.09
Auto Sequence Blind Over Flow Break Kick Track Jump Track Jump Normal Speed Double Speed
0.045 0.022ms
0.36 11.6
0.18
0.09 2.90
0.045 1.455
KA9220C
SERIAL DATA TRUTH TABLE Focus control Serial Data Focus Control HEXA Swith
Tracking gain control Serial Data Tracking Control HEXA Swith
KA9220C
Tracking mode control Serial Data Tracking Mode HEXA DIRC 654321 000000 000010 100000 010000 000001 000011 100001 010001 000100 000110 100100 010100 001000 001010 001000 011000 Function DIRC 654321 001000 001010 101000 011000 000100 000110 100100 010100 001000 001010 101000 011000 000100 000110 100100 010100 DIRC 654321 000011 000011 010001 010001 000011 000011 010001 010001 000011 000011 010001 010001 000011 000011 010001 010001
Auto Sequence Cancel Focus Track Jump Track Jump Track Jump Track Move forward reverse

KA9220C KA9220C 1-Chip BiCMOS integrated circuits that performs f

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