CXD3018Q/R
Pin No.
Output
values
I/O
Symbol
Description
CXD
CXD
3018R
3018Q
33
35
36
37
38
39
40
41
42
43
44
45
46
47
SSTP
FSTO
FSTI
I
O
I
Disc innermost track detection signal input.
2/3 frequency division output for XTAI pin.
2/3 frequency division input for XTAI pin.
Sled drive output.
34
1, 0
35
36
SFDR
SRDR
TFDR
TRDR
FFDR
FRDR
VSS
O
O
O
O
O
O
—
—
I
1, 0
1, 0
1, 0
1, 0
1, 0
1, 0
—
37
Sled drive output.
38
Tracking drive output.
39
Tracking drive output.
40
Focus drive output.
41
Focus drive output.
42
Digital GND.
43
VSS
—
Digital GND.
44
TEST
TES1
Test pin. Normally, GND.
Test pin. Normally, GND.
45
I
Crystal selection input. Low when the crystal is 16.9344MHz; high
when the crystal is 33.8688MHz.
46
48
XTSL
I
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
VC
I
I
I
Center voltage input.
Focus error signal input.
Sled error signal input.
FE
SE
NC
TE
I
I
Tracking error signal input.
Center servo analog input.
RF signal input.
CE
RFDC
ADIO
AVSS0
IGEN
AVDD0
ASYO
ASYI
BIAS
RFAC
AVSS3
CLTV
FILO
FILI
I
O
—
I
Analog Test pin. No connected.
—
Analog GND.
Operational amplifier constant current input.
Analog power supply.
—
O
I
—
1, 0
EFM full-swing output. (low = Vss, high = VDD)
Asymmetry comparator voltage input.
Asymmetry circuit constant current input.
EFM signal input.
I
I
—
I
—
Analog GND.
Multiplier VCO1 control voltage input.
O
I
Analog Master PLL filter output. (slave = digital PLL)
Master PLL filter input.
PCO
O
1, Z, 0 Master PLL charge pump output.
– 6 –
ETC [ ETC ]
