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• Pin function
Pin No.
Symbol
1
VCC
2
FNI
3
FPI
4
TPI
5
TNI
6
MDI
7
LDO
8
SEL
9
TEB
10
TEN
11
TEO
TE
L 13942296513
12
RFDC
13
GVSW
14
VRO
15
FEO
16
FEN
17
RFRP
18
REIS
19
RFGO
20
RFGC
21
AGCIN
22
RFO
www
23
RFI
24
GND
.
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I/O
-
3.3V power supply pin
I
Main-beam amp input pin
I
Main-beam amp input pin
I
Sub-beam amp input pin
I
Sub-beam amp input pin
I
Monitor photo diode amp input pin
O
Laser diode amp output pin
I
APC circuit ON/OFF control signal, laser diode (LDO) control signal input or bottom/peak detection
frequency change pin.
SEL
GND
Hiz
VCC
I
Tracking error balance adjustment signal input pin
Adjusts TE signal balance by eliminating carrier component from PWM signal (3-state output,
PWM carrier = 88.2kHz) output from TC94A14F/FA
TEBC pin using RC-LPF and inputting DC.
TEBC input voltage:GND~VCC
I
Tracking error signal generation amp negative-phase input pin
O
Tracking error signal generation amp output pin.
Combining TEO signal RFRP signal with TC94A14F/FA configures tracking search system.
O
RF signal peak detection output pin
I
AGC/FE/TE amp gain change pin
O
Reference voltage (VRO) output pin
*VRO=1/2VCC When VCC=3.3V
O
Focus error signal generation amp output pin
I
Focus error signal generation amp negative-phase input pin
O
Signal amp output pin for track count
Combining RFRP signal and TEO signal with TC94A14F/FA configures tracking search system.
I
O
RF signal amplitude adjustment amp output pin
I
RF amplitude adjustment control signal input pin
Adjusts RF signal amplitude by eliminating carrier component from PWM signal (3-state output,
PWM carrier=88.2kHz)output fromTC94A14F/14FA *RFGC pin using RC-LPF and inputting DC.
*RFGC input voltage:GND~VCC
I
RF signal amplitude adjustment amp input pin
O
RF signal generation amp output pin
I
RF signal generation amp input pin
x
ao
u163
y
-
GND pin
i
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2 9
8
Function
APC
LDO
circuit
OFF
Connected VCC through 1k resistor
ON
Control signal output
ON
Control signal output
Q Q
3
6 7
1 3
1 5
GVSW
Mode
GND
CD-RW
Hiz
Normal
VCC
co
.
9 4
2 8
0 5
8
2 9
9 4
2 8
m
(No.49843)1-49
9 9
9 9
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