SD-SH111 (serv.man21). Function table of IC - Sharp Audio Service Manual (repair manual). Page 3

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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.

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