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5-2. IC PIN FUNCTIONS
• IC101 FOCUS/TRACKING/SLED SERVO/EFM COMPARATOR (CXD2515AQ)
Pin Name
SRON
SRDR
SFON
TFDR
TRON
TRDR
TFON
FFDR
FRON
FRDR
FFON
VCOO
VCOI
TEST
DVss
TES2
TES3
PDO
VPCO
VCKI
AVD2
IGEN
AVS2
ADII
ADIO
RFDC
TE
SE
FE
VC
FILO
FILI
PCO
CLTV
AVS1
RFAC
BIAS
ASYI
ASYO
AVD1
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
I/O
O
O
O
O
O
O
O
O
O
O
O
O
I
I
–
I
I
O
O
I
–
I
–
I
O
I
I
I
I
I
O
I
O
I
–
I
I
I
O
–
Function
Sled drive output (Open)
Sled drive output
Sled drive output (Open)
Tracking drive output
Tracking drive output (Open)
Tracking drive output
Tracking drive output (Not used)
Focus drive output
Focus drive output (Open)
Focus drive output
Focus drive output (Open)
VCO output for analog EFM PLL (Open)
VCO output for analog EFM PLL (Connected to Ground)
TEST pin connected normally to Ground (Connected to Ground)
Digital Ground
TEST pin connected normally to Ground
TEST pin connected normally to Ground
Charge-pump output for analog EFM PLL (Open)
Charge-pump output for variable pitch PLL (Open)
Clock input from variable pitch external VCO (Connected to Ground)
Analog power supply
Power supply pin for operational amplifiers
Analog Ground
A/D converter input pin
OP amplifier output pin
RF signal input
Tracking error signal input
Sled error signal input
Focus error signal input
Center voltage input pin
Filter output for master PLL
Filter input for master PLL
Charge-pump output for master PLL
Control voltage input for master VCO
Analog Ground
EFM signal input
Asymmetry circuit constant current input
Asymmetry comparate voltage input
EFM full swing output
Analog power supply
• Abbreviation
EFM: Eight to Fourteen Modulation
PLL: Phase Locked Loop
