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• Pin function
Pin No.
Symbol
I/O
1
VCC
-
2
FNI
I
3
FPI
I
4
TPI
I
5
TNI
I
6
MDI
I
7
LDO
O
8
SEL
I
9
TEB
I
10
TEN
I
11
TEO
O
12
RFDC
O
13
GVSW
I
14
VRO
O
15
FEO
O
16
FEN
I
17
RFRP
O
18
REIS
I
19
RFGO
O
20
RFGC
I
21
AGCIN
I
22
RFO
O
23
RFI
I
24
GND
-
3.3V power supply pin
Main-beam amp input pin
Main-beam amp input pin
Sub-beam amp input pin
Sub-beam amp input pin
Monitor photo diode amp input pin
Laser diode amp output pin
APC circuit ON/OFF control signal, laser diode (LDO) control signal input
or bottom/peak detection frequency change pin.
SEL
GND
Hiz
VCC
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
Tracking error signal generation amp negative-phase input pin
Tracking error signal generation amp output pin.
Combining TEO signal RFRP signal with TC94A14F/FA configures tracking search system.
RF signal peak detection output pin
AGC/FE/TE amp gain change pin
Reference voltage (VRO) output pin
*VRO=1/2VCC When VCC=3.3V
Focus error signal generation amp output pin
Focus error signal generation amp negative-phase input pin
Signal amp output pin for track count
Combining RFRP signal and TEO signal with TC94A14F/FA configures tracking search system.
RF signal amplitude adjustment amp output pin
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
RF signal amplitude adjustment amp input pin
RF signal generation amp output pin
RF signal generation amp input pin
GND pin
Function
APC
LDO
circuit
OFF
Connected VCC through 1k resistor
ON
Control signal output
ON
Control signal output
GVSW
Mode
GND
CD-RW
Hiz
Normal
VCC
KD-SX995
(No.49792)1-45
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