Sharp DV-NC55U Service Manual page 68

DV-NC55U/C/M
Pin No. Terminal Name In/Output
156 EXTAD
157 VREF
158 FOO
159 TRO
160 AVDD
161 AWCTL
162 FMO
163 DMO
164 TEBC
165 FEBC
166 DPDC
167 EQBC
168 ANMON
169 /DFCT
170 VRCK
171 VSS3
172 SCD
173 SCL
174 SCB
175 FGIN
176 ASLCP
Note) Terminals with "/" at the beginning of their names are active "L" ones.
• Block Diagram
Servo signal
from RFamp
RF signal
from RFamp
Input General-purpose external ADC input
– Reference power supply for analog system
only: 1.65V
Output Focus EQ output
Output Tracking EQ output
– Power supply for 3.3V analog system only
Output Active wide PLL control output
Output Feed EQ output
Output Disc EQ output
Output Tracking balance control signal
Output Focus balance control signal
Output DPD error signal/pit depth adjustment signal 3V system
Output RF wide boost adjustment signal
Output General-purpose PWM output
Output Black dot detection signal
Output RF EQ property control clock
– 3.3V digital ground
Output Head amplifier serial data
Output Head amplifier serial data latch pulse
Output Head amplifier serial data clock
Input Disc FG signal input
(with self-bias circuit)
Output Data slice positive pole output
DAC I/F
ADC DEQ
Digital Servo
Slice
Data
level
Slicer
Gen.
PLL
to RFamp
Operation function
to Driver, RFamp
DAC
Servo
Control
Micom BUS
Syndrome
operation
SYNC Det.
Demodulation
68
3/5V system Remarks
3V system Analog input terminal
3V system
3V system Analog output terminal
3V system Analog output terminal
–
3V system Analog output terminal
3V system Analog output terminal
3V system Analog output terminal
3V system Analog output terminal
3V system Analog output terminal
Analog output terminal
3V system Analog output terminal
3V system Analog output terminal
3V system
3V system
–
3V system
3V system
3V system Feedback resistor
Analog input terminal
3V system Analog output terminal
Digital
Analog
in out
1bit DAC
for
CD-DA
Clock
PLL
Micom
I/F
Output
ECC
I/F
DRAM
I/F
to DRAM
to Micom
to DECORDER