For Audio Equipment MN6650A Signal Processing LSI for CD Players Pin Assignment RST TLOCK FLOCK SENSE MLD MCLK MDATA TRON CLVS VSS TEST XI TO T1 T2 T3 T4 T5 T6 VDET TBAL TRCRS 34 35 36 37 38 39 40 41 42 43 44 1 2 3 4 5 6 7 8 9 10 11 33 32 31 30 29 28 27 26 25 24 23 Features Focus servo Tracking servo Traverse servo Automatic adjustment functions for FO/TR gain, FO/ TR offset, and FO/TR balance PWM output with tristate output from a single pin Built-in dropout countermeasures Anti-shock functions Support for both linear motor and screw-based traverse mechanisms Function to prevent runaway traverse operation Support for 3- and 1-beam systems Support for double-speed playback Microcomputer serial interface Operating voltage 4.5 to 5.5V (TOP VIEW) Applications CD Players 22 21 20 19 18 17 16 15 14 13 12 TEST PLAY RFDET DO OFT ARF WVEL PBO TE FE VR2 Overview The MN6650A is a digital servo LSI for creating highprecision servo systems with completely self-adjusting focus, tracking, and traverse servos. QFP044-P-1010 KICK TRD FOOD TVD TRV VDD AVDD AVSS VSS LDON VR1 MN6650A For Audio Equipment Block Diagram FE TE PBO VR1 VR2 10 13 9 8 12 CPU A/D CONVERTER OUTPUT PORT 11 2 26 31 32 1 18 20 21 29 INPUT PORT PWM 19 43 16 17 15 14 33 23 AVDD VDD AVSS VSS RST TEST T0 to 3 T4 to 6 44 TRCRS 42 VDET 25 TRACK COUNTER CLVS RFDET 3 TIMING GENERATOR 4 28 MICROCOMPUTER INTERFACE DO 27 5 MLD 30 OFT MCLK 22 34 SENSE MDATA 7 XI WVEL LDON PLAY TRON FLOCK TLOCK TES KICK TRV FOD TRD TVD TBAL For Audio Equipment MN6650A Pin Descriptions Pin No. 1 Symbol TES I/O O Function Description Tracking error shunt signal. "H" level: shunt. 2 PLAY O Play signal output. "H" level: play. 3 RFDET I RF detection signal input. "L" level: detected. 4 DO I Dropout signal input. "H" level: dropout 5 OFT I Offtrack signal input. "H" level: offtrack. 6 ARF I RF signal input. 7 WVEL O Double-speed status signal output. "H" level: double-speed. 8 PBO I Potentiometer signal input. (analog input) 9 TE I Tracking error signal input. (analog input) 10 FE I Focus error signal input. (analog input) 11 VR2 I Reference voltage for A/D converter. "L" level. 12 VR1 I Reference voltage for A/D converter. "H" level. 13 LDON O Laser ON signal output. 14 VSS I Ground for digital circuits. (0 V) 15 AVSS I Ground for analog circuits. (0 V) 16 AVDD I Power supply for analog circuits. (+5 V) "H" level: ON. 17 VDD I Power supply for digital circuits. (+5 V) 18 TRV O Traverse forced feed output. 19 TVD O Traverse drive output. (tristate) 20 FOD O Focus drive output. (tristate) 21 TRD O Tracking drive output. (tristate) 22 KICK O Kick pulse output. (tristate) 23 TEST I Test pin. Keep this at "H" level. 24 VSS I Ground for digital circuits. (0 V) 25 CLVS I Spindle servo phase synchronization signal output. "H" level: CLV. (tristate) "L" level: rough servo. 26 TRON O Tracking servo ON signal. 27 MDATA I Microcomputer command data input. "L" level: ON. 28 MCLK I Microcomputer command clock input. 29 MLD I Microcomputer command load signal input. "L" level: load. 30 SENSE O Sense signal output. (OFT, FESL, NACEND, NAJEND, POSAD, and SFG) 31 FLOCK O Focus servo pull-in signal. "L" level: pull-in state. 32 TLOCK O Tracking servo pull-in signal. "L" level: pull-in state. 33 RST I Reset input. "L" level: reset. 34 XI I (Data is latched at rising edge.) Clock input. (fXI =16.9344 MHz) (Capacitor coupling requires a minimum of 1.0 Vpp.) 35 T0 O Test pin. Leave open. 36 T1 O Test pin. Leave open. 37 T2 O Test pin. Leave open. 38 T3 O Test pin. Leave open. MN6650A For Audio Equipment Pin Descriptions (continued) Pin No. 39 Symbol T4 I/O I Function Description Test pin. Keep this at "L" level. 40 T5 I Test pin. Keep this at "L" level. 41 T6 I Test pin. Keep this at "L" level. 42 VDET I Vibration detection signal input. "H" level: vibration detected. 43 TBAL O Tracking balance adjustment output. 44 TRCRS I Track cross signal input. (tristate) For Audio Equipment MN6650A Package Dimensions (Unit: mm) QFP044-P-1010 12.30 ±0.40 10.00±0.20 33 23 22 12.30±0.40 10.00±0.20 (1.00) 34 12 44 0.10 SEATING PLANE 0.10±0.10 0 to 10° 1.15±0.20 +0.10 2.00±0.20 11 0.35±0.10 0.15 -0.05 0.80 2.10±0.30 1 (1.00) 0.60±0.20