KA8309B BiCMOS integrated circuit designed servo control compact disc
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KA8309B
KA8309B BiCMOS integrated circuit designed servo control compact disc player application.
SERVO SIGNAL PROCESSOR
1010D
FEATURES
Servo control functions; (focus, tracking, seld servo control) Loop filter clock reproduction Provide function Preventing sled runaway Anti-shock Spindle servo Auto-sequencer Provide adjustable peak focus search, track jump sled kick with external resistor power consumption (100mW typ; 80mW Single power supply, Split power supply,
ORDERING INFORMATION
Device KA8309B Package 48-QFP-1010D Operating Temperature -20°C~+75°C
KA8309B
BLOCK DIAGRAM
SERVO SIGNAL PROCESSOR
DGND
LOCK
DVCC SPDLI
LOOP -FILTER TTL/ CMOS SLOAD SDATA REST DRCT
SPDLO
3.5V REGULATOR
WDCK
CMOS SEQUENCER OUTPUT DECODER FOCUS TRACKING GAIN GAIN CONTROL CONTROL TRACK JUMP PEAK VALUE CONTROL SLED JUMP PEAK VALUE CONTROL SERIAL PARALLEL DECODER CMOS/
SCLK
864M
ISET
3.5V
AVEE SENS
DVEE
TRACKING PHASE COMPEN SATION SLED JUMP PEAK VALUE CONTROL
FSET
WINDOWS COMPARATOR
TRACK JUMP PEAK VALUE CONTROL
SLEO SLEN
FOCUS SEARCH PEAK VALUE CONTROL
FOCUS GAIN CONTROL HFGD
FOCUS PHASE MPENSATION
HIGH FREQ. GAIN CONTROL
FSEI FSCH AVCC TKEO TKEI
FSEO
Fig.
STOP SLEI
TRACKING GAIN CONTROL
KA8309B
DESCRIPTION
SERVO SIGNAL PROCESSOR
Symbol HFGD FSEO FSEI FSCH AVCC TKEO TKEI SLEN SLEO SLEI STOP FSET SENS AVEE DRCT REST SDATA SLOAD SCLK DGND Center voltage.
Description
Reduce high frequency gain with capacitor connected between High frequency gain focus servo changed switching off. Rising frequency bandwidth focus loop. Focus servo error output. Inverting input focus amplifier. Time constant external generate focus search waveform. Time constant external switch tracking gain high frequency. Provide time constant change high frequency tracking gain. Analog positive power supply. Tracking error output. Inverting input tracking amplifier. Non-inverting input tracking amplifier. Sled output. Inventing input sled amplifier. detecting signal on/off limit switch innermost part disc. Setting peak frequency focus, tracking phase compensation LPF. Output FZC, TZC, STOP BUSY command from CPU. Analog negative power supply. Track number count output. Control track jump. Reset input pin, reset "L". Serial data input. Latch input. Serial data transfer clock. Digital ground. Provide time constant loop filter.
KA8309B
DESCRIPTION (Continued)
Symbol ISET 3.5V 864M LOCK DVCC SPDLI SPDLO WDCK DVEE
SERVO SIGNAL PROCESSOR
Description Input detected phase. Current input, determining peaks focus search, track jump, sled kick. External resistor adjust free running frequency VCO. Regulated output voltage. Output 8.64MHZ VCO. operation sled runaway prevention circuit "L". connecting DSP. connecting DSP. Providing external time constant servo. Digital positive power supply. Inverting input spindle servo amplifier. Spindle servo error output. Clock input auto-sequence. Focus signal input pin. Mirror signal input pin. Digital negative power supply. Defect signal input pin. Tracking error signal input pin. Input zero cross tracking comparator. Input detect ATSC. Input focus error signal.
ABSOLUTE MAXIMUM RATINGS
Characteristic Supply Voltage Power Dissipation Operating Temperature Storage Temperature Symbol -VEE Value Unit
KA8309B
ELECTRICAL CHARACTERISTICS
SERVO SIGNAL PROCESSOR
=25°C, =2.5V, =2.5V, -2.5V, unless otherwise specified) Characteristic Circuit Current Circuit Current Circuit Current Circuit Current Voltage Gain Focus Servo Feed Through Output Voltage Output Voltage Output Voltage Output Voltage Search Output Voltage Search Output Voltage Voltage Gain Tracking Servo Feed Through Output Voltage Output Voltage Output Voltage Output Voltage Jump Output Voltage Jump Output Voltage Voltage Gain Output Voltage SIed Servo Output Voltage Output Voltage Output Voltage Feed Through Kick Output Voltage Kick Output Voltage Symbol ICC1 ICC2 ICC3 ICC4 (DC) (FF) (FCS) (FCS) (FCS) (FCS) SG48 10Hz, 200mVP-P SG48 10KHz, 40mVP-P Gain difference between 0.5V 0.5V 0.5V 0.5V -0.63 0.39 SG45 10HZ, 500mVP-P =10KHz, 500mVP-P Gain difference between -1.5V =+1.5V =-1.5V =+1.5V -0.62 0.41 =10Hz, 100mVP-P 0.4V -0.4V 0.4V -0.4V 10KHz, 200mV Gain difference between 0.44 -0.7 -0.6 1.16 -1.16 -0.43 20.6 1.96 -1.96 -0.55 0.55 22.5 1.15 -1.16 -0.40 0.62 24.4 1.96 -1.96 12.9 -0.55 0.55 14.6 1.16 -1.16 -0.37 0.65 17.8 1.96 -1.96 Test Conditions 18.3 23.6 Unit
VO(SEARCH)1 VO(SEARCH)2 (DC) (TF) (TCK) (TCK) (TCK) (TCK) (JUMP) (JUMP) (DC) (SLD) (SLD) (SLD) (SLD) (SF) (KICK) (KICK)
KA8309B
ELECTRICAL CHARACTERISTICS (Continued)
Characteristic Spindle Servo Spindle Servo Gain Output Voltage Output Voltage Output Voltage Output Voltage Regulator Output Voltage Self-running Frequency Frequency Deviation Frequency Deviation Sens Level Output Level Threshold Voltage ATSC Threshold Voltage ATSC Threshold Voltage Threshold Voltage SSTOP Threshold Voltage Symbol (SPD) (SPD) (SPD) (SPD) (SPD) VREG FVCO VSENSE (FZC) =2.5V
SERVO SIGNAL PROCESSOR
Test Conditions =10Hz, 200mVP-P
14.7 1.76
16.5
18.4 -1.76
Unit
1.11 -1.11 3.28 3.67 11.3 -8.5 -1.96 -1.96
Frequency deviation from FVCO, =148mV -148mV SG46 10KHz, 2VP-P Valriable, VP18 1.1V Valriable, VP18 1.1V Valriable, VP18 1.1V Valriable, VP18 1.1V Valriable, VP18 1.1V
(ATSC) (ATSC) (TZC) (SSTOP)
KA8309B
TEST CIRCUIT
SERVO SIGNAL PROCESSOR
AVCC +2.5V SG34 AVEE -2.5V
DVCC +2.5V
240K 2.7K
DVEE -2.5V
DGND -2.5V
AGND
LOCK
864M
3.5V
ISET
DGND
SCLK
DVCC SPDLI SPDLO WDCK DVEE HFGD AVCC FSEO TKEO FSCH FSEI
SLOAD SDATA REST DRCT
DATA
510K
0.14K
100K
SG40
KA8309B
AVEE SENS FSET STOP SLEI SLEO SLEN TKEI
0.14K
SG45
SG46
SG13
100K
100K
SG48
200K 0.14K
200K
0.14K
KA8309B
TEST METHODE (SWITCH CONDITIONS)
SERVO SIGNAL PROCESSOR
SWITCH Conditions Symbol ICC1 ICC2 ICC3 ICC4 (DC) (FF) (FCS) (FCS) (FCS) (FCS) (SEARCH) (SEARCH) (DC)1 (TF) (TCK) (TCK) (TCK) (TCK) (JUMP)1 (JUMP)2 (DC) (SLD) (SLD) (SLD) (SLD) (SF) (KICK) (KICK) (SPD) (SPD) (SPD) (SPD) (SPD) VRFG FVCO VSENSE (FZC) (ATSC) (ATSC) (TZC) (SSTOP)
Input Point
Test Point
KA8309B
APPLICATION INFORMATION
Serial Interface Timing Chart
SERVO SIGNAL PROCESSOR
DATA
twck twck
1/fck
Fig.
DVCC DGND 5.5V Item Clock Frequency Clock Pulse Width Hold Time Setup Time Delay Time Latch Pulse Width Symbol fWCK 1000 Unit
KA8309B
SYSTEM CONTROL Item
Focus Control Tracking Control Tracking Mode Select Auto sequence Blind(A,E)/Overflow(C) Brake(B) Kick(D) Track Jump(N) Track Move(M) Address
SERVO SIGNAL PROCESSOR
Data Search Focus Gain Down Anti Brake Shock Tracking Mode Focus Focus Search Search 0.18ms 0.36ms 11.6ms 0.09ms 0.18ms 5.8ms Search Gain Sled Mode Sled Sled Kick Kick 0.045ms 0.09ms 2.9ms 0.022ms 0.045ms 1.45ms
Sens Output
SSTOP
Busy
Hi-Z
Note: GAIN possible independently. When anti-shock (00011xxx), invert both when internal anti-shock
TRACKING MODE JUMP JUMP
SLED MODE MOVE MOVE
AUTO SEZUENCE CANCEL FOCUS TRACK JUMP TRACK JUMP TRACK JUMP TRACK MOVE FORWARD REVERSE
When CANCEL sent, status immediately preceding auto sequence mode (just before sent) reset. auto sequence mode starts with first falling input pulse (WDCK) after transfer falling latch pulse. Values (not set. above values ones when WDCK (88.2KHz) input preset when power switched internal initial/set values follows:
KA8309B
Address Data
SERVO SIGNAL PROCESSOR
actual count values slightly different from values. value WDCK value WDCK value WDCK vlaue Count
SERIAL DATA TRUTH TABLE
Serial Data FOCUS CONTROL Hexa Function 4321 AS=0 TG=2 AS=1 TG=2
TRACKING CONTROL
KA8309B
Serial Data TRACKING MODE Hexa.
SERVO SIGNAL PROCESSOR
Function DIRC 000000 000010 010000 100000 000001 000011 010001 100001 000100 000110 010100 100100 001000 001010 011000 101000 DIRC 654321 001000 001010 011000 101000 000100 000110 010100 100100 001000 001010 011000 101000 000100 000110 010100 100100 DIRC 654321 000011 000011 100001 100001 000011 000011 100001 100001 000011 000011 100001 100001 000011 000011 100001 100001
KA8309B
APPLICATION CIRCUIT SPLIT POWER SUPPLY
SERVO SIGNAL PROCESSOR
SPINDLE MOTOR
From (KA9201) FROM
2.2K
0.0047µ 0.0047µ 100K 2200p
DVEE
WDCK
SPDLO
SPDLI
DVCC
0.033
HFGD FSEO FSEI FSCH AVCC TKEO
LOCK
0.47µ
0.033µ
100K
FROM
864M
1000p
100K
FOCUS COIL
KA8309B
3.5V ISET
120K 1.8K
4.7µ
6.3V
DGND SLOAD SDATA DRCT STOP SENS SLEO AVEE REST SLEN FSET SCLK
0.4µ 6.3V 100K
TRACKING COIL
120K
0.01µ 510K
SLEI
TKEI
0.015µ
8.2K
MICROCOMPUTER
SLED MOTOR
100K
LIMIT
FROM MICROCOMPUTER
KA8309B
SINGLE POWER SUPPLY
FROM SMON VCOO VCOI SMEF SMPD SMSD LOCK
SERVO SIGNAL PROCESSOR
100K 4.7µ
0.47µ
100K
1000p
LOCK
864M
3.5V
1.8K
0.03µ
ISET
200K
DGND
SCLK
FROM MICROCOMPUTER
DVCC SPDLI SPDLO WDCK DVEE HFGD AVCC FSEO TKEO FSCH FSEI
SLOAD SDATA REST DRCT
510K MICROCOMPUTER
100K
FROM WDCK
From
KA8309B
AVEE SENS FSET STOP SLEI SLEO SLEN TKEI
0.0047
0.015 0.01µ LIMIT
0.0047
120K
3.3µ
0.013
4.7µ
100K
100K
KA9257
VCC2
FOCUS COIL
SPINDLE MOTOR TRACKING COIL
VCC2
SLED MOTOR
Fig.
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