Hitachi DV-P303U, Service Manual

Page: 22 / 106

Reference Information
2-15
41
PVDD
P
PLL
logic
block
VDD
power
supply
pin
42
PLCK
O
P
LCK
43
PLLLOCK
O
Frequency lock detect output (H: lock, L: unlock)
44
EFMR
TD
O
L
atched EFM output signal
45
PVSS
P
PLL
logic block VSS power supply pin
46
R
VCO
I
R
esistor pin for VCO gain
47
RFD
I
Gain adjust resister for frequency detector
48
RPD
I
Gain adjust resister for phase detector
49
VCTL
I
control voltage for VCO
50
MAGIC0
I
Input for controlling hysteresis of the FD output (for testing)
51
EFMOA
I
E
FM of
fset
adjustment pin
52
TZCO
O
T
racking zero
cross
output
pin
53
SVDD
P
Servo CPU VDD power supply pin
54
EQCTL
O
EQ control signal
55
EFMI
I
EFM signal for test
56
EFMO
O
E
FM signal
57
LPFDVD
I
A
symmetric input signal for DVD
58
LPFCD
I
A
symmetric input signal for CD
59
RFI
I
Rf input signal
60
SVSS
P
Servo CPU VSS power supply pin
61
A
V
S
S
P
A
nalog block VSS power supply pin
62
SME
I
Spindle error input pin
63
VREF
I
R
eference voltage input pin
64
TE
I
T
racking error
signal
input
pin
65
FE
I
Focus error signal input pin
66
ENV
I
RF envelope input pin
No
Name
I/O
Description
6
7
TI
LT
I
I
TI
L
T
in
(reserved)
68
A
V
D
D
P
Analog block VDD power supply pin
6
9
TI
LT
O
O
TI
L
T
out
(reserved)
70
DVCTL
O
Depth variation control signal output pin
71
TBAL
O
T
racking balance
signal
output
pin
72
FBAL
O
Focus balance signal output pin
73
SLD
O
S
led motor drive signal output pin
74
SPD
O
Spindle motor drive signal output pin
75
FOD
O
F
ocus actuator drive signal output pin
76
TRD
O
T
racking actuator
drive
signal
output
pin
77
TZCA
I
TE signal for tracking zero cross input pin
78
MDOUT0
O
Mode data0 out controlled by micom
79
MDOUT1
O
Mode data1 out controlled by micom
80
MDOUT2
O
Mode data2 out controlled by micom
No
Name
I/O
Description
1
MDOUT3
O
Mode data3 out controlled by micom
2
SST
OP/PS0PS1
I
L
imit switch/sled position sensor input pin0
3
P
S1
I
S
led motor position sensor input pin1
4
TEST
I
T
est pin (L: normal H: test)
5
COUT
O
Counter clock
6
FLKB
O
Focus servo lock signal output pin
7
TLKB
O
T
racking
servo lock signal output pin
8
PSB
I
0
: 1 Bit, 1: 8 Bit
9
RSTB
I
S
ystem reset signal input pin
10
CSB
I
M
ICOM chip select pin
11
DAB
I
M
ICOM data/addrs select pin
12
MWRB
I
M
ICOM write clock signal input pin
13
MRDB
I
M
ICOM read clock signal input pin
14
MDA
T
A0
I/O
MICOM data pin0
15
MDA
T
A1
I/O
MICOM data pin1
16
MDA
T
A2
I/O
MICOM data pin2
17
MDA
T
A3
I/O
MICOM data pin3
18
MDA
T
A4
I/O
MICOM data pin4
19
MDA
T
A5
I/O
MICOM data pin5
20
MDA
T
A6
I/O
MICOM data pin6
21
MDA
T
A7
I/O
MICOM data pin7
22
SENSE
O
Internal status monitor pin
23
DVDD
P
Servo logic & ROM VDD power supply pin
24
XI
I
S
ystem clock signal input pin
25
XO
O
S
ystem clock signal output pin
26
XOUT
O
C
lock out (33.9688MHz) to DSP
27
DVSS
P
Servo logic & ROM VSS power supply pin
28
SQCK
O
C
lock output pin for subcode data read
29
SQSI
I
Subcode data input pin
30
SCOR
I
T
iming
detection input pin for subcode data read
31
SMON
I
M
otor ON signal input pin
32
LOCK
I
Lock signal input pin
33
DIRC
I
Direct jump control (for 1 track jump)
34
FOKB
I
Focus OK signal input pin
35
FDCTL
I
PLL
frequency detect control input pin
36
LDONB
O
Laser diode ON signal output pin
37
DFCT
I
D
efect detection signal input pin
38
MIRR
I
M
irror signal input pin
39
PLLHD
I
PLL
hold
signal
from
micom
40
INT0_224
O
Servo interrupt monitor pin