Sharp CDC2900 Service Manual - Page 49

VHiLC78622N-1: Servo/Signal Control LC78622NE 1/2

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CD-C622/C2900 IC2 VHiLC78622N-1: Servo/Signal Control (LC78622NE) (1/2) Pin No. 1 2 Terminal Name Input/Output Function DEFI TAI Input Input Defect detection signal (DFF) input terminal. (When this terminal is not used, connect it to 0V.) For PLL Input terminal for test. Pull-down resistor built in. Be sure to connect this terminal to 0V. 3 PDO Output Phase comparison output terminal for external VCO control. 4 VVSS - Grounding terminal for built-in VCO. Be sure to connect this terminal to 0V. 5 ISET Input Resistor connection terminal for adjustment of PDO output current. 6 VVDD - Power terminal for built-in VCO. 7 FR Input For VCO frequency range adjustment. 8 VSS - Digital system grounding terminal. Be sure to connect this terminal to 0V. 9 EFMO Output For slice level control EFM signal output terminal. 10 EFMIN Input EFM signal input terminal. 11 TEST2 Input Input terminal for test. Pull-down resistor built-in. Be sure to connect this terminal to 0V. 12 CLV+ Outout Output for disc motor control. 3-value output is enabled according to command. 13 CLV- Output Output for disc motor control. 3-value output is enabled according to command. 14 V/P Output Rough servo/phase control automatic selection monitor output terminal. "H": Rough servo, "L": Phase servo 15 HLF Intput Track detection signal input terminal. Schmidt input. 16 TES Input Tracking error signal input terminal. Schmidt input. 17 TOFF Output Tracking OFF output terminal. 18 TGL Output Output terminal for tracking gain selection. "L": Gain raising. 19 JP+ Output Output for track jump control. 3-value output is enabled according to command. 20 JP- Output Output for track jump control. 3-value output is enabled according to command. 21* PCK Output Clock monitor terminal for EFM data play-back. Phase lock: 4.3218 MHz. 22* FSEQ Output Sync signal detection output terminal. When the sync signal detected from the EFM signal coincides with the internally generated sync signal: "H" 23 VDD - Digital system power terminal. 24 CONT1 25 CONT2 26 CONT3 27 CONT4 Input/Output General-use input/output terminal 1. Input/Output General-use input/output terminal 2. Input/Output General-use input/output terminal 3. Input/Output General-use input/output terminal 4. Control with serial data command from microcomputer. When this terminal is not used, set it as an input terminal and connect to 0V or set it as an output terminal and open. 28* CONT5 Input/Output General-use input/output terminal 5. 29* EMPH/CONT6 Output Deemphasis monitor terminal. "H": Deemphasis disc play-back. General-use output terminal 6. 30* C2F Output C2 flag output terminal. 31 DOUT Output Digital OUT output terminal. (EIAJ format) 32* TEST3 Input Input terminal for test. Pull-down resistor built-in. Be sure to connect this terminal to 0V. 33 TEST4 Input Input terminal for test. Pull-down resistor built-in. Be sure to connect this terminal to 0V. 34 PCCL Input General-use input/output command recognition terminal. Pull-down resistor built in. When this terminal is used for the same function as that of LC78622E, open or connect this terminal to 0V. H: Only the general-use input/output port command is controllable. L: All command controls are enabled. 35* MUTEL/CONT7 Output L channel 1-bit DAC Mute output terminal for L channel. General-use output terminal 7. 36 LVDD - Power terminal for L channel. 37 LCHO Output L channel output terminal. 38 LVSS - Grounding terminal for L channel. Be sure to connect this terminal to 0V. 39 RVSS - R channel 1-bit DAC Grounding terminal for R channel. Be sure to connect this terminal to 0V. 40 RCHO Output R channel output terminal. 41 RVDD - Power terminal for R channel. 42* MUTER/CONT8 Output Mute output terminal for R channel. General-use output terminal 8. 43 XVDD - Power terminal for crystal oscillation. 44 XOUT Output 16.9344 MHz crystal oscillator connection terminal. 45 XIN Input 16.9344 MHz crystal oscillator connection terminal. 46 XVSS - Grounding terminal for crystal oscillation. Be sure to connect this terminal to 0V. In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside. - 49 -

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CD-C622/C2900
1
DEFI
Input
Defect detection signal (DFF) input terminal. (When this terminal is not used, connect it to 0V.)
2
TAI
Input
For PLL
Input terminal for test. Pull-down resistor built in. Be sure to connect this terminal to 0V.
3
PDO
Output
Phase comparison output terminal for external VCO control.
4
VVSS
—
Grounding terminal for built-in VCO. Be sure to connect this terminal to 0V.
5
ISET
Input
Resistor connection terminal for adjustment of PDO output current.
6
VVDD
—
Power terminal for built-in VCO.
7
FR
Input
For VCO frequency range adjustment.
8
VSS
—
Digital system grounding terminal. Be sure to connect this terminal to 0V.
9
EFMO
Output
For slice level control
EFM signal output terminal.
10
EFMIN
Input
EFM signal input terminal.
11
TEST2
Input
Input terminal for test. Pull-down resistor built-in. Be sure to connect this terminal to 0V.
12
CLV+
Outout
Output for disc motor control. 3-value output is enabled according to command.
13
CLV-
Output
Output for disc motor control. 3-value output is enabled according to command.
14
V/P
Output
Rough servo/phase control automatic selection monitor output terminal.
"H": Rough servo, "L": Phase servo
15
HLF
Intput
Track detection signal input terminal. Schmidt
input.
16
TES
Input
Tracking error signal input terminal. Schmidt input.
17
TOFF
Output
Tracking OFF output terminal.
18
TGL
Output
Output terminal for tracking gain selection. "L": Gain raising.
19
JP+
Output
Output for track jump control. 3-value output is enabled according to command.
20
JP-
Output
Output for track jump control. 3-value output is enabled according to command.
21*
PCK
Output
Clock monitor terminal for EFM data play-back. Phase lock: 4.3218 MHz.
22*
FSEQ
Output
Sync signal detection output terminal.
When the sync signal detected from the EFM signal coincides with the internally generated sync
signal: "H"
23
VDD
—
Digital system power terminal.
24
CONT1
Input/Output
General-use input/output terminal 1.
25
CONT2
Input/Output
General-use input/output terminal 2.
26
CONT3
Input/Output
General-use input/output terminal 3.
27
CONT4
Input/Output
General-use input/output terminal 4.
28*
CONT5
Input/Output
General-use input/output terminal 5.
29*
EMPH/CONT6
Output
Deemphasis monitor terminal. "H":
Deemphasis disc play-back. General-use output terminal 6.
30*
C2F
Output
C2 flag output terminal.
31
DOUT
Output
Digital OUT output terminal. (EIAJ format)
32*
TEST3
Input
Input terminal for test. Pull-down resistor built-in. Be sure to connect this terminal to 0V.
33
TEST4
Input
Input terminal for test. Pull-down resistor built-in. Be sure to connect this terminal to 0V.
34
PCCL
Input
General-use input/output command recognition terminal. Pull-down resistor built in.
When this terminal is used for the same function as that of LC78622E, open or connect this
terminal to 0V.
H:
Only the general-use input/output port command is controllable.
L:
All command controls are enabled.
35*
MUTEL/CONT7
Output
L channel 1-bit DAC
Mute output terminal for L channel. General-use output terminal 7.
36
LVDD
—
Power terminal for L channel.
37
LCHO
Output
L channel output terminal.
38
LVSS
—
Grounding terminal for L channel. Be sure to connect this terminal to 0V.
39
RVSS
—
R channel 1-bit DAC
Grounding terminal for R channel. Be sure to connect this terminal to 0V.
40
RCHO
Output
R channel output terminal.
41
RVDD
—
Power terminal for R channel.
42*
MUTER/CONT8
Output
Mute output terminal for R channel. General-use output terminal 8.
43
XVDD
—
Power terminal for crystal oscillation.
44
XOUT
Output
16.9344 MHz crystal oscillator connection terminal.
45
XIN
Input
16.9344 MHz crystal oscillator connection terminal.
46
XVSS
—
Grounding terminal for crystal oscillation. Be sure to connect this terminal to 0V.
IC2
VHiLC78622N-1: Servo/Signal Control (LC78622NE) (1/2)
Pin
No.
Function
Terminal Name
Input/Output
Control with serial data command from microcomputer.
When this terminal is not used, set it as an input terminal
and connect to 0V or set it as an output terminal and
open.
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.