52
HCD-GNX80
7-25. IC Pin Function Descriptions
• IC101 CXD3059AR (RF AMP) (CD BOARD)
Pin No.
Pin Name
I/O
Description
1
MIRR
I/O
Not used (Open)
2
DFCT
I/O
Not used (Open)
3
FOK
I/O
Not used (Open)
4
VSS
—
Ground
5
LOCK
I/O
Not used (Open)
6
MDP
O
Spindle motor servo control output
7
SSTP
I
Disk innermost detection signal input
8
IOVSS1
—
Ground
9
SFDR
O
Sled drive signal output
10
SRDR
O
Sled drive signal output
11
TFDR
O
Tracking drive signal output
12
TRDR
O
Tracking drive signal output
13
FFDR
O
Focus drive signal output
14
FRDR
O
Focus drive signal output
15
IOVDD1
—
Power supply (+3.3V)
16
AVDD0
—
Power supply (+3.3V)
17
AVSS0
—
Ground
18
NC
—
Not used (Open)
19
E
I
E signal input
20
F
I
F signal input
21
TEI
I
Tracking error signal input
22
TEO
O
Tracking error signal output
23
FEI
I
Focus error signal input
24
FEO
O
Focus error signal output
25
VC
I/O
Center voltage output from RF amplifier block
26
A
I
A signal input
27
B
I
B signal input
28
C
I
C signal input
29
D
I
D signal input
30
NC
—
Not used (Open)
31
AVDD4
—
Power supply (+3.3V)
32
RFDCO
O
RFDC signal output (Not used)
33
PDSENS
I
Reference voltage pin
34
AC_SUM
O
RFAC summing amplifier output
35
EG_IN
I
Equalizer circuit input
36
LD
O
APC LD drive signal output
37
PD
I
APC PD signal input
38
NC
—
Not used (Open)
39
RFC
I
Equalizer cut-off frequency adjustment pin
40
AVSS4
—
Ground
41
RFACO
O
RFAC signal output
42
RFACI
I
RFAC signal input or EFM signal input
43
AVDD3
—
Power supply (+3.3V)
44
BIAS
I
Asymmetry circuit constant current input
45
ASYI
I
Asymmetry comparator voltage input
46
ASYO
O
EFM full-swing output
47
VPCO
O
Not used (Open)
48
VCTL
I
Wide-band EFM PLL VCO2 control voltage input
