Sharp CD-E700 Service Manual - Page 41

CD-E700/CD-E77 FUNCTION TABLE OF IC IC1 VHiLC78646E-1: CD Servo (LC78646E) (1/2) Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13* 14 15* 16* 17 18 19 20 21 22 23 24* 25* 26 27* 28 29* 30* 31* 32* 33* 34* 35* 36* 37 38 39* 40 41 42 43 Terminal Name Input/Output Setting in Reset SLCO Output - SLCIST Input - EFMIN Input - RF Output - RFVDD Input - RFVSS - - FIN1 Input - FIN2 Input - TIN1 Input - TIN2 Input - VREF Output RFVDD/2 REF1 Input - FE Output ZHI TEC Output - TE Output ZHI RFMON Output ZHI JITTC - - ADAVDD Input - ADAVSS - - TDO Output ADAVDD/2 FDO Output ADAVDD/2 SPDO Output ADAVDD/2 SLDO Output ADAVDD/2 GPDAC Output ADAVDD/2 CONT4 Input/Output Input Mode CONT5 Input/Output Input Mode SBCK/CONT6 Input/Output Input Mode SBCK/FG Input - DEFECT V/*P FSEQ Output L Output H Output L MONI1 MONI2 MONI3 MONI4 MONI5 VSS VDD DOUT TEST LVDD LCHO LVSS Output Output Output Output Output - Input Output Input Input Output - L L L L L - - L L - LVDD/2 - Function For slice level control. Control output. Resistor connection terminal for SLCO output current setting. RF signal input terminal. RF signal monitor terminal. RF power terminal. RF earth terminal. To be connected to 0 V. A+C signal input terminal. B+D signal input terminal. E signal input terminal. F signal input terminal. VREF voltage output terminal. Reference supply setting terminal. FE signal monitor terminal. LPF capacitor connection terminal for TE signal. TE signal monitor terminal. RF internal signal monitor terminal. Capacitor connection terminal for jitter detection. Power terminal for servo A/D, D/A. Earth terminal for serve A/D, D/A. To be connected to 0 V. Output terminal for tracking control. D/A output. Output terminal for focus control. D/A output. Output terminal for spindle control. D/A output. Output terminal for sled control. D/A output. Servo D/A general-purpose output terminal. General-purpose I/O terminal 4. General-purpose I/O terminal 5. Controlled by commands from the microcomputer. When not used, set them as input terminals and connect General-purpose I/O terminal 6 or to 0 V, or set them as output Subcode reading clock input terminal. terminals and leave open. Subcode reading clock input terminal/FG signal input terminal/external emphasis setting terminal. Terminal functions are set by commands. When not used, connect to 0 V. Defect terminal. Auto switching monitor output terminal for rough servo phase control. "H": rough servo, "L": phase servo. Sync signal detection output terminal. The status changes to "H" when the sync signal detected in EFM and the sync signal of internal generation are identified. Internal signal monitor terminal 1. Internal signal monitor terminal 2. Internal signal monitor terminal 3. Internal signal monitor terminal 4. Internal signal monitor terminal 5. Digital system earth terminal. To be connected to 0 V. Digital system power terminal. Digital OUT output terminal. (EIAJ format) Input terminal for test. To be connected to 0 V. Left channel D/A converter Power supply for Left channel. Left channel output. GND for Left channel. Must be connected to 0 V. In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside. - 41 -