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TA2109F (RF/DIGITAL SERVOR)
PIN No.
NAME
1
VCC
2
FNI
3
FPI
4
TPI
5
TNI
6
MDI
7
LDO
8
SEL
9
TEB
10
2VRO
11
TEN
12
TEO
13
SBAD
14
FEO
15
FEN
16
VRO
17
RFRP
18
RFIS
19
RFGO
20
RFGC
21
AGCI
22
RFO
23
GND
24
RFN
I/O
DESCRIPTION
Power supply input terminal
-
Main beam I-V amp input terminal
I
Main beam I-V amp input terminal
I
Sub beam I-V amp input termianl
I
Sub beam I-V amp input termianl
I
Monitor phono diode amp input terminal
I
Laser diode amp output terminal
O
Laser diode control signal input terminal and APC
I
circuit ON/OFF control signal input terminal
Tracking error balance adjustment signal input
I
terminal. Controlled by 3 PWM signal
(PWM carrier = 88.2 kHz)
Reference voltage (2 VREF) output terminal
O
2
= 4.2V when V
VREF
TE amp negative input terminal
I
TE error signal output terminal
O
Sub beam adder signal output terminal
O
Focus error signal output terminal
O
FE amp negative input terminal
I
Reference voltage (V
O
V
= 2.1V when V
REF
Track count signal output terminal
O
RFRP detect circuit input terminal
I
RF gain signal output terminal
O
RF amplitude adjustment control signal input
I
terminal. Controlled by 3 PWM signal
(PWM carrier = 88.2 kHz)
RF signal amplitude adjustment amp input terminal
I
RF signal output terminal
O
Ground terminal
-
RF amp negative input terminal
I
SERVICE MANUAL
= 5V
CC
) output terminal
REF
= 5V
CC
REMARK
-
Connected to pin diode A,C
Connected to pin diode B,D
Connected to pin diode F
Connected to pin diode E
Connected to monitor photo
diode
Connected to laser control circuit
3 signal input (V
, Hi-Z, GND)
CC
3 signal input (2 V
, VR, GND)
REF
-
Connected to TEO through
feedback register
-
-
-
Connected to FEO through
feedback register
-
-
Connected to RFO through
condenser
-
3 signal input (2
, VR, GND)
VREF
Connected to RFO through
condenser
-
-
-
11
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