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IC DESCRIPTION-2/4 (TC9284BF)-2/3
QQ
3 7 63 1515 0
Pin No.
Pin Name
39
DMFC
40
DMPC
41
2VREF
42
SEL
43
FCSI
44
FKIC
TE
L 13942296513
45, 46
FEL1, FEL2
47
FEI
48
TESH
49
TEOF
50
SBAD
51
RFRP
52
VREF
53
RFI
54
GNDA
55
DTSC2
56
MONI T
57
DTSC 1
58
VDDA
59
PDCNT
60
PDO
www
61
TMAX
.
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I/O
Disc motor CLV servo AFC signal output.
Operation
Motor acceleration
O
CLV servo ON
Motor brake
CLV servo OFF
O
Disc motor CLV servo APC signal output.
—
Analog power supply. (twice the "VREF" voltage)
Servo mode select output. It turns ON/OFF the laser diode (LD) and focus servo.
SEL output
"L"
O
"HiZ"
"H"
Focus actuator drive signal output during focus search mode. "VDDA" to move the lens far from
O
disc. "L" to move the lens closer to disc. Normally "HiZ".
Focus actuator drive signal output during focus adjustment mode. "VDDA" to move the lens far
O
from disc. "L" to move the lens closer to disc. Normally "HiZ".
O
Focus gain adjustment analog switch output. "VREF" or "HiZ".
I
Focus error signal input.
I
Analog switch input to track error signal sample-and-hold.
O
Focus gain adjustment analog switch output."VREF" when tracking servo off.
I
Sub beam added signal input.
I
RF ripple signal input.
—
Analog power supply.
I
RF signal input.
—
Analog GND.
O
Data slice control EFM signal inverted output.
Internal signal monitored output. EFMO, PLCK or LOCK signals can be selected by command.
O
Can be muted. (Not used)
O
Date slice control EFM signal positive polarity output.
—
Analog power supply.
I
PDO output control signal input. "L" to fix to "HiZ" forcibly. "H" : normal output.
O
Phase error signal between EFM and PLCK signals is output.
TMAX detected result output.
TMAX detected result
Longer than specified cycle
O
x
ao
u163
Shorter than specified cycle
y
Within specified cycle
i
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2 9
8
Description
Command
DMFC output
DMFK
"2VREF"
DMSV
AFC signal (PWM)
DMBK
"L"
DMOFF
"VREF"
LD
Focus servo
OFF
OFF
ON
OFF
ON
ON
Q Q
3
6 7
1 3
1 5
TMAX output
"L"
co
"VREF"
"HiZ"
.
-26-
9 4
2 8
Operating mode
LD OFF
Focus search
Focus ON (normal play)
0 5
8
2 9
9 4
2 8
m
9 9
9 9
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