Sharp CD-DVD500

CD-DVD500
– 64 –
Figure 64 BLOCK DIAGRAM OF IC
153 RFRP Input RFRP signal input.
154 AVSS Input Power supply for 3.3 V analog system.
155 TESM10 — Test terminal.
156 EXTAD Input General-purpose external ADC input.
157 VREF Input Reference power supply for analog system: 1.65 V.
158 FOO Output Focus EQ output.
159 TRO Output Tracking EQ output.
160 AVDD Input Power supply for 3.3 V analog system.
161 AWCTL Output Active wide PLL control output.
162 FMO Output Feed EQ output.
163 DMO Output Disc EQ output.
164 TEBC Output Tracking balance control signal.
165* FEBC Output Focus balance control signal.
166 DPDC Output Pit depth adjustment signal of DPD error signal.
167 EQBC Output Boost adjustment signal for RF wide area.
168 ANMON Output General-purpose PWM output.
169 /DFCT Output Black dot detection signal.
170 VRCK Output RF EQ characteristics control clock.
171 VSS3 — 3.3 V digital ground.
172 SCD Output Head amp serial data.
173 SCL Output Head amp serial latch pulse.
174 SCB Output Head amp serial data clock.
175* FGIN Input Disc FG signal input. (with self-bias circuit).
176 ASLCP Output Data slice positive output.
IC3701 VHiTC94A03F-1: Servo ECC (TC94A03F) (3/3)
Pin No.
Function
Terminal Name
Input/Output
The terminal whose name starts with “/” is activated in “L”.
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Servo signal
from RF amp
RF signal
from RF amp
ADC DEQ
Servo
Control
DAC I/F DAC
to Driver, RF amp
Digital
in
Analog
out
1bit DAC
for
CD-DA
Clock
PLL
Micom BUS
Micom
I/F
to Micom
to DECORDER
Output
I/F
ECC
DRAM
I/F
to DRAM
Syndrome
operation
SYNC Dat.
Demodulation
Slice
level
Gen.
Data
Slicer
PLL
to RF amp
Digital Servo