Table of Contents
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E
Market
Service Manual
SD-EX220H
Audio
CHAPTER 8.
OTHER
[1] Function table of IC
IC1 VHiLC78646E-1: CD Servo (LC78646E) (1/2)
Pin No.
Terminal Name
1
SLCO
2
SLCIST
3
EFMIN
4
RF
5
RFVDD
6
RFVSS
7
FIN1
8
FIN2
9
TIN1
10
TIN2
11
VREF
12
REF1
13*
FE
14
TEC
15*
TE
16*
RFMON
17
JITTC
18
ADAVDD
19
ADAVSS
20
TDO
21
FDO
22
SPDO
23
SLDO
24*
GPDAC
25
CONT4
26
CONT5
27*
SBCK/CONT6
28
SBCK/FG
29*
DEFECT
30*
V/*P
31*
FSEQ
32*
MONI1
33*
MONI2
34
DE_EMPH
35*
MONI4
36*
MONI5
37
VSS
38
VDD
39
DOUT
40
TEST
41
LVDD
42*
LCHO
43
LVSS
44
RVSS
45*
RCHO
46
RVDD
47
XVDD
48
XOUT
49
XIN
In this unit, the terminal with asterisk mark (*) is (open) terminal whitch is not connected to the outside.
Input/Output
Setting in Reset
Output
—
Input
—
Input
—
Output
—
Input
—
—
—
Input
—
Input
—
Input
—
Input
—
Output
RFVDD/2
Input
—
Output
ZHI
Output
—
Output
ZHI
Output
ZHI
—
—
Input
—
—
—
Output
ADAVDD/2
Output
ADAVDD/2
Output
ADAVDD/2
Output
ADAVDD/2
Output
ADAVDD/2
Input/Output
Input Mode
Input/Output
Input Mode
Input/Output
Input Mode
Input
—
Output
L
Output
H
Output
L
Output
L
Output
L
Output
L
Output
L
Output
L
—
—
Input
—
Output
L
Input
L
Input
—
Output
LVDD/2
—
—
—
—
Output
LVDD/2
Input
—
Input
—
Output
—
Input
—
Control output.
For slice level
Resistor connection terminal for SLCO output current setting.
control.
RF signal input terminal.
RF signal monitor terminal.
RF power terminal.
RF earth terminal. To be connected to 0 V.
A+C signal input terminal.
B+D signal input terminal.
E signal input terminal.
F signal input terminal.
VREF voltage output terminal.
Reference supply setting terminal.
FE signal monitor terminal.
LPF capacitor connection terminal for TE signal.
TE signal monitor terminal.
RF internal signal monitor terminal.
Capacitor connection terminal for jitter detection.
Power terminal for servo A/D, D/A.
Earth terminal for serve A/D, D/A. To be connected to 0 V.
Output terminal for tracking control. D/A output.
Output terminal for focus control. D/A output.
Output terminal for spindle control. D/A output.
Output terminal for sled control. D/A output.
Servo D/A general-purpose output terminal.
General-purpose I/O terminal 4.
General-purpose I/O terminal 5.
General-purpose I/O terminal 6 or
Subcode reading clock input ter-
minal.
Subcode reading clock input terminal/FG signal input terminal/external emphsis
setting terminal.
Terminal functions are set by commands.
When not used, conect to 0 V.
Defect terminal.
Auto switching monitor output terminal for rough servo phase control.
"H": rough servo, "L": phase servo.
Sync signal detection output terminal.
The status changes to "H" when the sync signal detected in EFM and the sync
signal of internal generation are identified.
Internal signal monitor terminal 1.
Internal signal monitor terminal 2.
Internal signal monitor terminal 3.
Internal signal monitor terminal 4.
Internal signal monitor terminal 5.
Digital system earth terminal. To be connected to 0 V.
Digital system power terminal.
Digital OUT output terminal. (EIAJ format)
Input terminal for test. To be connected to 0 V.
Power supply for Left channel.
Left channel
Left channel output.
D/A converter
GND for Left channel. Must be connected to 0 V.
GND for Right channel. Must be connected to 0 V.
Right channel
Right channel output.
D/A converter
Power supply for Right channel.
Power supply for crystal oscillator.
Crystal
Connected for the 33.8688 MHz crystal oscillator cement.
Oscillator
8 – 1
SD-EX220H
Function
Controlled by commands from the micrcom-
puter.
When not used, set them as input terminals
and connect to 0 V, or set them as output
terminals and leave open.
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