PinNo.Mark I/ODivisionFunction19 RVDD 1 I Power supply to internalDRAM20 RVSS 2 — GND to internal DRAM21 FODP O Focus drive (+) PWM signaloutput terminal22 FODM O Focus drive (-) PWM signaloutput terminal23 SPDP O Spindle drive (+) PWMsignal output terminal24 SPDM O Spindle drive (-) PWMsignal output terminal25 LDON O Laser power control outputterminal (1:ON, 0:OFF)26 PVPPDRAM1— Monitor to internal DRAMoutput terminal (Not used,open)27 IVDD 0 — Power supply terminal for I/O pad28 DVDD 0 — Digital power supply29 XI I Crystal oscillator inputterminal (F=16.9344MHz)30 DVSS 0 — Digital GND31 XO O Crystal oscillator outputterminal (F=16.9344MHz)32~34STP10~STP12 I Stepping motor statusinput terminal (0~2)35~37STP00~STP02 O Stepping motor drivesignal output terminal (0~2)38 RFSWHL O Laser power control outputterminal (PIT/GRUVEswitching)39 RFSWPG O Laser power control outputterminal (Reflectanceswitching)40 PEFMS I EFM signal input terminal41 EFMPLLF O EFM PLL filter outputterminal42 PEFM1 O Loop filter terminal forEFM data slicing (Notused, open)43 EFMFIL O Input filter switching forEFM data slicing terminal44 EFMIREF I Reference current settingterminal for EFM PLL47