59
HCD-U1BT
Pin No.
Pin Name
I/O
Description
47
IOVDD1
—
Power supply terminal (+3.3V)
48
AVDD0
—
Power supply terminal (+3.3V)
49
AVSS0
—
Ground terminal
50
E
I
E signal input from the optical pick-up block
51
F
I
F signal input from the optical pick-up block
52
TEI
I
Tracking error signal input terminal
53
TEO
O
Tracking error signal output terminal
54
FEI
I
Focus error signal input terminal
55
FEO
O
Focus error signal output terminal
56
VC
O
Middle point voltage output terminal
57
A
I
A signal input from the optical pick-up block
58
B
I
B signal input from the optical pick-up block
59
C
I
C signal input from the optical pick-up block
60
D
I
D signal input from the optical pick-up block
61
AVDD4
—
Power supply terminal (+3.3V)
62
RFDCO
O
RFDC signal output (Not used)
63
PDSENS
I
Reference voltage pin (Connected to ground)
64
AC_SUM
O
RFAC summing amplifier signal output terminal
65
EQ_IN
I
RF equalizer circuit input terminal
66
LD
O
Laser diode on/off control signal output to the automatic power control circuit
“L”: laser off, “H”: laser on
67
PD
I
Light amount monitor input from the optical pick-up block laser diode
68
RFC
I
Equalizer cut off frequency adjustment terminal
69
AVSS4
—
Ground terminal
70
RFACO
O
EFM signal output terminal
71
RFACI
I
EFM signal input terminal
72
AVDD3
—
Power supply terminal (+3.3V)
73
BIAS
I
Asymmetry circuit constant current input terminal
74
ASYI
I
Playback EFM asymmetry comparator voltage input terminal
75
ASYO
O
Playback EFM full-swing output terminal
76
VPCO
O
Charge pump output terminal for broad-band EFM PLL (Not used)
I
VCO2 control voltage input terminal for broad-band EFM PLL
—
Ground terminal
I
VCO1 control voltage input terminal for multiplier
O
Filter output terminal for master PLL
I
Filter input terminal for master PLL
O
Charge pump output terminal for master PLL
—
Ground terminal
—
Power supply terminal (+1.8V)
I
MP3 standby control signal input terminal “L”: standby (Connected to ground)
86
VDD
—
Power supply terminal (+1.8V)
87
VSS
—
Ground terminal
88
TEST1
I
Test terminal (Connected to ground)
89
DATA
I
CD serial data input from the system controller
90
CLK2
I
MP3 serial data transfer clock signal input from the system controller
91
SVSS
—
Ground terminal
92
SVDD
—
Power supply terminal (+1.8V)
93
JTAGTCK
—
Connected to ground
94
JTAGTDI
—
Connected to ground
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