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51
HCD-CPX11
6-16. IC PIN FUNCTION DESCRIPTION
• BD81A BOARD IC101 CXD3059AR (RF AMP)
Pin No.
Pin Name
I/O
Description
1
MIRR
I/O
Mirror signal input/output (Not used)
2
DFCT
I/O
Defect signal input/output (Not used)
3
FOK
I/O
Focus OK signal input/output (Not used)
4
VSS
—
Internal digital ground
5
LOCK
I/O
GFS is sampled at 460Hz; when GFS is high , this pin outputs a high signal
If GFS is low eight consecutive
6
MDP
O
Spindle motor servo control output
7
SSTP
I
Disk innermost detection signal input
8
IOVSS1
—
I/O digital ground
9
SFDR
O
Sled drive output
10
SRDR
O
Sled drive output
11
TFDR
O
Tracking drive output
12
TRDR
O
Tracking drive output
13
FFDR
O
Focus drive output
14
FRDR
O
Focus drive output
15
IOVDD1
—
I/O digital power supply
16
AVDD0
—
Analog power supply
17
AVSS0
—
Analog ground
18
NC
—
Not used
19
E
I
E signal input
20
F
I
F signal input
21
TEI
I
Tracking error signal input to DSSP block
22
TEO
O
Tracking error signal output from RF amplifier block
23
FEI
I
Focus error signal input to DSSP block
24
FEO
O
Focus error signal output from RF amplifier block
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
31
AVDD4
—
Analog power supply
32
RFDCO
O
RFDC signal output (Not used)
33
PDSENS
I
Reference voltage pin for PD
34
AC_SUM
O
RFAC summing amplifier output
35
EQ_IN
I
Equalizer circuit input
36
LD
O
APC amplifier output
37
PD
I
APC amplifier input
38
NC
—
Not used
39
RFC
I
Equalizer cut-off frequency adjustment pin
40
AVSS4
—
Analog ground
41
RFACO
O
RFAC signal output
42
RFACI
I
RFAC signal input or EFM signal input
43
AVDD3
—
Analog power supply
44
BIAS
I
Asymmetry circuit constant current input
45
ASYI
I
Asymmetry comparator voltage input
46
ASYO
O
EFM full-swing output (Low = VSS, High = VDD)
Summary of Contents for HCD-CPX11
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