Panasonic SJ-MJ88, Service Manual

Page: 47 / 62

Pin
No.
Mark I/O
Division
Function
19 RVDD 1 I Power supply to internal
DRAM
20 RVSS 2 — GND to internal DRAM
21 FODP O Focus drive (+) PWM signal
output terminal
22 FODM O Focus drive (-) PWM signal
output terminal
23 SPDP O Spindle drive (+) PWM
signal output terminal
24 SPDM O Spindle drive (-) PWM
signal output terminal
25 LDON O Laser power control output
terminal (1:ON, 0:OFF)
26 PVPP
DRAM1
— Monitor to internal DRAM
output terminal (Not used,
open)
27 IVDD 0 — Power supply terminal for I/
O pad
28 DVDD 0 — Digital power supply
29 XI I Crystal oscillator input
terminal (F=16.9344MHz)
30 DVSS 0 — Digital GND
31 XO O Crystal oscillator output
terminal (F=16.9344MHz)
32~34 STP10~STP12 I
Stepping motor status
input terminal (0~2)
35~37 STP00~STP02 O
Stepping motor drive
signal output terminal (0~2)
38 RFSWHL O Laser power control output
terminal (PIT/GRUVE
switching)
39 RFSWPG O Laser power control output
terminal (Reflectance
switching)
40 PEFMS I EFM signal input terminal
41 EFMPLLF O EFM PLL filter output
terminal
42 PEFM1 O Loop filter terminal for
EFM data slicing (Not
used, open)
43 EFMFIL O Input filter switching for
EFM data slicing terminal
44 EFMIREF I Reference current setting
terminal for EFM PLL
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