Pin No. Mark I/O Function1 A11 O DRAM address signal O/P 112 A9 O DRAM address signal O/P 93 A8 O DRAM address signal O/P 84 A7 O DRAM address signal O/P 75 A6 O DRAM address signal O/P 66 A5 O DRAM address signal O/P 57 A4 O DRAM address signal O/P 48 NWE O Write Enable Signal (DRAM)9 NCAS O DRAM CAS Control Signal10 NRAS O DRAM ARS Control Signal11 A3 O DRAM address Signal O/P 312 A2 O DRAM address Signal O/P 213 A1 O DRAM address Signal O/P 114 A0 O DRAM address Signal O/P 015 A10 O DRAM address Signal O/P 1016 BA0 N.C. Motor O/P (0);/Serial I/P17 BA1 N.C. Motor O/P (1);/Serial I/P18 PRAMVSS33 - GND (DRAM)19 PRAMVDD15 - Power Supply Voltage (DRAM)20 PRAMVDD33 - Power Supply Voltage (+1.6V)21 SPOUT O Spindle Drive O/P22 PC I/O Spindle motor drive O/P signalserial data/Monitoring I/P23 TRVP O Traverse Drive O/P (+ve)24 TRP O Tracking Drive O/P (+ve)25 FOP O Focusing Drive O/P (+ve)26 DVSS1 - GND27 IOVDD2 I Digital Power Supply Voltage 2(I/O)28 DVDD1 - Digital Power Supply Voltage 1(Built-In)29 SRVMON0 N.C. Servo Monitor (0) O/P30 SRVMON1 N.C. Servo Monitor (1) O/P31 AVSS2 - GND32 OSCIN I Oscillating Input33 CTRCRS N.C. Tracking Cross Comparator34 VREF - +Vref Supply Voltage35 E I Tracking Input Signal 136 F I Tracking Input Signal 237 D I Focusing Input Signal 438 B I Focusing Input Signal 239 C I Focusing Input Signal 340 A I Focusing Input Signal 141 PD I APC Amp I/P42 LD O Laser Drive Current O/P43 CENV I Detection CapacitanceConnection terminal44 RFENV O RF Envelope O/P45 RFOUT O RF Summing Amp O/P46 RFIN I SGC I/P47 AVDD2 I Analog Power Supply voltage 2(For DSL/PLL)48 ARFDC O AGC Capacitive ConnectionTerminal49 ARFOUT O AGC Output50 ARFFB I ARF Feedback Signal I/P51 ARFIN I Audio RF Signal I/P52 DSLF I Loop Filter Terminal (For DSL)Pin No. Mark I/O Function53 IREF I Reference I/P54 PLLF I PLL Loop Filter Terminal (PhaseCompare)55 PLLF0 O PLL Loop Filter Terminal (SpeedCompare)56 OUTL O Audio O/P (LCH)57 AVSS1 - GND58 AVDD1 I Analog Power Supply Voltage 159 OUTR O Audio O/P (RCH)60 DVSS3 - GND3 (Digital Circuit)61 NSRVMONON I Servo Motor O/P Enabling62 EXT0 N.C. Expansion O/P Port 063 EXT1 N.C. Expansion O/P Port 164 EXT2 N.C. Expansion O/P Port 265 FLAG N.C. Flag Signal O/P66 TX N.C. Digital Audio Interface O/Psignal67 MCLK I Micro-Computer CommandClock I/P68 MDATA I Micro-Computer Data I/P69 MLD I Micro-Computer Load I/P70 STAT O Status Signal O/P71 BLKCK O Subcode Blk Clock72 NRST O LSI Reset Signal73 DQSYTXT N.C. Pack Signal O/P for CD-Textdata74 SMCK N.C. Micro-Computer Clock O/P75 PMCK N.C. IOCNT Serial data O/P(Synchronous O/P)76 DVDD2 - Digital Power Supply Voltage 2(+1.5V)77 IOVDD1 - Digital Power Supply Voltage 1(For I/O)78 DVSS2 - GND2 (For Digital Circuit)79 NTEST2 I Test Mode Setting (ON:H)80 X2 O Crystal Oscillating Circuit O/P81 X1 I Crystal Oscillating Circuit I/P82 NTEST I Test Mode Setting I/P (ON:H)83 D2 I/O Data Signal O/P 284 D1 I/O Data Signal O/P 185 D0 I/O Data Signal O/P 086 D3 I/O Data Signal O/P 387 D4 I/O Data Signal O/P 488 D5 I/O Data Signal O/P 589 D6 I/O Data Signal O/P 690 D7 I/O Data Signal O/P 791 D15 I/O Data Signal O/P 1592 D14 I/O Data Signal O/P 1493 DRVDD I I/O Power Supply Voltage(DRAM)94 D13 I/O Data Signal O/P 1395 D12 I/O Data Signal O/P 1296 D11 I/O Data Signal O/P 1197 D10 I/O Data Signal O/P 1098 D9 I/O Data Signal O/P 999 D8 I/O Data Signal O/P 8100 SDRCK O Clock Signal O/P20 Terminal Function of IC's20.1. IC7001 (MN6627954MA) Servo Processor,Digital SignalProcessor/Digital filter and D/A Converter86SA-AK640PL