CD-BA250H/CD-BA2600H
– 46 –
44
RVSS
–
–
GND for Right channel. Must be connected to 0 V.
45
RCHO
Output
LVDD /2
Right channel output.
46
RVDD
Input
–
Power supply for Right channel.
47
XVDD
Input
–
Power supply for crystal oscillator.
48
XOUT
Output
–
Connected for the 33.8688 MHz crystal oscillator cement.
49
XIN
Input
–
50
FSX/16MIN
Input/Output
Input
7.35 kHz Synchronization signal monitor port.
or Clock input port for Digital filter & D/A
51
XVSS
–
–
Crystal
GND for crystal oscillator. Must be connected to 0 V.
Oscillator
52*
C2F
Output
H
C2 FLAG monitor port.
53*
EFLG
Output
L
C1, C2 error corrected monitor port.
54*
16MOUT
Output
Clock
16.9344 MHz output port.
55
ASLRCK
Input
–
Word clock input port.
(If this port does not use, must be connect to 0 V.)
56
ASDACK
Input
–
Bit clock input port.
(If this port does not use, must be connect to 0 V.)
57
ASDFIN
Input
–
Left/Right channel data input port.
(If this port does not use, must be connect to 0 V.)
58*
LRSY
Output
L
Word clock output port.
59*
DATACK
Output
L
Digital data
Bit clock output port.
60*
DATA
Output
L
Left/Right channel data output port.
61
CE
Input
–
Chip enable signal input port.
62
CL
Input
–
Microcomputer
Data transfer clock input port.
63
DI
Input
–
Interface
Data input port.
64
DO
Output
(H)
Data output port. (N-ch. open drain output.)
65
*WRQ
Output
H
Interruption signal output.
66
*RES
Input
–
Chip reset signal input port.
This port must be set LOW after first applied power on.
67
DRF
Output
L
Focus detection output port.
68
VDD5
Input
—
Power supply for Microprocessor.
69
VSS
–
–
GND for digital circuit. Must be connected to 0 V.
70
CONT3
Input/Output
Input
General purpose port 1.
71
CONT2
Input/Output
Input
General purpose port 2.
72*
CONT1
Input/Output
Input
General purpose port 3.
73
PDO1
Output
—
Internal VCO control phase comparator output port 1.
74
PDO2
Output
Input
Internal VCO control phase comparator output port 2.
75
VVSS
—
—
GND for internal VCO. Must be connected to 0 V.
76
PCKIST
Input
—
PDO output current adjustment resistor connection port.
77
VVDD
Input
—
Power supply for internal VCO.
78
FR
Input
—
VCO frequency range adjustment port.
79
LDS
Input
—
LASER power detected signal input port.
80
LDD
Output
—
LASER power control signal output port.
IC1 VHiLC78645E-1: CD Servo (LC78645E) (2/2)
Pin No.
Function
Terminal Name Input/Output Setting in Reset
Right channel
D/A converter
Crystal
Oscillator
Anti-shock
Controlled with serial data command from micro-
computer. When not used, General purpose input/
output terminal 7. Set it as the input terminal and open
it by connecting to 0 V, or set it as the output terminal
and open it.
PLL
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Be sure to supply the same potential to each power terminal. (VVDD, ADAVDD, VDD, LVDD, RVDD, XVDD)
Terminal witch is controlled by the power terminal (VDD5 V) for a microcomputer interface :
CE (61pin), CL (62pin), DI (63pin), DO (64pin), WRQ (65pin), RES (66pin), DRF (67pin), CONT2 (71pin), CONT3 (70pin).
