-43-
IC DESCRIPTION -1/2 (IC, LC78646E) -2/2
41
LVDD
–
Left channel power supply pin.
42
LCHO
O
Left channel output pin.
43
LVSS
–
Left channel ground pin. (Connected to 0V)
44
RVSS
–
Right channel ground pin. (Connected to 0V)
45
RCHO
O
Right channel output pin.
46
RVDD
–
Right channel power supply pin.
47
XVDD
–
Crystal oscillator power supply pin.
48
XOUT
O
Connections for a 16.9344MHz crystal oscillator pin.
49
XIN
I
50
FSX/16MIN
I/O
7.35kHz synchronization signal output pin / DF, DAC external clock input pin. (Not used)
51
XVSS
–
Crystal oscillator ground pin. (Connected to 0V)
52
C2F
O
C2 flag output pin. (Not used)
53
EFLG
O
C1, C2 error correction monitor pin. (Not used)
54
16MOUT
O
16.9344MHz output pin. (Not used)
55
ASLRCK
I
Left/Right clock input pin during anti-shock mode. (Connected to 0V)
56
ASDACK
I
Bit clock input pin during anti-shock mode. (Connected to 0V)
57
ASDFIN
I
Left/Right channel data input pin during anti-shock mode. (Connected to 0V)
58
LRSY
O
Left/Right clock output pin. (Not used)
59
DATACK
O
Bit clock output pin. (Not used)
60
DATA
O
Left/Right channel data output pin. (Not used)
61
CE
I
Chip enable signal input pin.
62
CL
I
Data transfer clock input pin.
63
DI
I
Data input pin.
64
DO
O
Data output pin. (Nch open drain output)
65
WRQ
O
Interruption signal output pin.
66
RES
I
Reset input pin. This pin must be set low briefly after power is first applied.
67
DRF
O
Focus ON detect pin.
68
VDD5
–
Microprocessor interface power supply pin.
69
VSS
–
Digital ground pin. (Connected to 0V)
70 ~ 72
CONT3 ~ CONT1
I/O
General purpose input/output pin 3 ~ 1. (Not used)
73
PDO1
O
Phase comparison output pin 1 to control built-in VCO.
74
PDO2
O
Phase comparison output pin 2 to control built-in VCO.
75
VVSS
–
Built-in VCO ground pin. (Connected to 0V)
76
PCKIST
I
Resistor connection pin to set current for PDO1 and PDO2 outputs.
77
VVDD
–
Built-in VCO power supply pin.
78
FR
I
Resistor connection pin to set the frequency range of built-in VCO.
79
LDS
I
Laser power detection signal input pin.
80
LDD
O
Laser power control signal output pin.
Pin No.
Pin Name
I/O
Description
