6
1.4.
Digital (Front End Section) Block Diagram
RFB
RFA
INA
INB
INC
IND
INE
INF
ING
INH
LASER
DETECTOR
LASER
DETECTOR
LASER
DETECTOR
BD
CD
DVD
FO/TR
ACTUATOR
SPINDLE
MOTOR
OPTICAL PICK-UP/TRAVERSE
P55001
BD/DVD
RF SIGNAL
DVD FOCUS AND TRACKING SIGNAL
BD FOCUS AND TRACKING SIGNAL
CD MAIN AND SUB SIGNAL
P55003
FOCUS/TRACKING ACTUATOR
STEPPING
MOTOR
SPINDLE MOTOR DRIVE
STEPPING MOTOR DRIVE
DIGITAL BLOCK
BACK END
SECTION
IC51001
(OPTICAL DISC CONTROLLER)
SODC
RF SIGNAL
MOTOR DRIVE SIGNAL
TRACKING ERROR SIGNAL
FOCUS ERROR SIGNAL
SERVO BLOCK DIAGRAM
Absolute/
PWM Control
Circuit
IC55004
(MOTOR/PWM/DRIVER)
VSLED1
VREF
VLOAD
VTRK
VFCS
VTLT
Pre-Driver
NF
NF
Power MOS FET
Absolute/
PWM Control
Circuit
BEMF detect
Comparator
Pre-Driver
Power MOS FET
Absolute/
PWM Control
Circuit
Pre-Driver
Power MOS FET
Absolute/
PWM Control
Circuit
Pre-Driver
Power MOS FET
Absolute/
PWM Control
Circuit
Pre-Driver
Power MOS FET
Absolute/
PWM Control
Circuit
Pre-Driver
Power MOS FET
IC55005
STP1 Control
Circuit
P30
PWM5A
PWM6A
P30
PWM5A
PWM6A
(MOTOR/PWM/DRIVER)
NF
A5V
AGND
NF
NF
NF
NF
Gain
Control
NF
Matrix
Circuit
Start-up
Circuit
SLED END
Detection
Pre-Driver
Current Linmit
TSD Circuit
Charge
Pump
Power MOS FET
12V
SLED1_P
SLED1_N
SLED2_P
SLED2_N
MCOM
16
VSLED2
VSPIN
XMUTE1
XMUTE2
XFG
GC
MONITOR
17
22
21
PWM2A
PWM0A
PWM1A
20
PWM7
VHALFIN
19
PWM3A
PWM3B
6
18
PWM4
13
PWM0B
PWM1B
14
11
FG
PWM2A
PWM0A
PWM1A
PWM7
VHALFIN
PWM3A
PWM3B
PWM4
PWM0B
PWM1B
FG
15
52
53
55
56
49
TRVA+
TRVA-
TRVB+
TRVB-
G_TR+
U
V
W
U
V
W
CP1
CP2
LOAD_P
LOAD_N
TRK_P
TRK_N
TLT_P
TLT_N
FCS_P
P5V_1
FCS_N
42
44
46
3
2
31
16
17
18
19
26
12V
P5V12L
5V
LDM-
LDM+
LDM-
LDM+
32
33
13
14
G_SB+
G_SB-
G_SA+
G_SA-
P55003
LOADING
MOTOR
29
G_TR-
30
G_FO2+
27
G_FO2-
28
G_FO1+
24
G_FO1-
25
Pre-Driver
Power MOS FET
STP1+
STP1-
STEP_ENA
STP1_IN
STP2_IN
CONLLIENDZ
STP2+
STP2-
Power MOS FET
Pre-Driver
STP2 Control
Circuit
Collimator END
Detectin
A5V
AGND
7
8
9
12
IC55003
LDOUT1
G_LD1_DVD
G_LD1_CD
G_LD1_BD
LDOUT2
LDOUT3
IMON
17
6
VMON
18
7
LDEN
19
8
P1
9
(Laser Diode Drive)
P2
10
B22
PAD0
A22
PAD3
K23
P10
L24
P11
B21
G26
G25
F25
F26
E25
D26
D25
C26
B26
C25
A20
D19
E19
SGIO0
PAD0
PAD3
P10
P11
SGIO0
LDIN
4
PDOUT
5
A23
LPCO3
B23
LPC3
LPC3
LPCO3
Q55009
3.3V
F18
F19
C19
B19
A19
A17
B17
C17
C18
D18
B20
DMP-BDT210PX
DMP-BDT110PX/PU
