LG BD530, Service Manual

Page: 101 / 109

4-8
Pin Symbol Type Description
M2 FEFMO2
Analog
Output
Feed motor 2 control. PWM output.
M4 FEFMO3 Analog I/O
Feed motor 3 control. PWM output.
Alternative Function : Auxiliary servo input.
N1 FEFMO4 Analog I/O
Feed motor 4 control. PWM output.
Alternative Function : Auxiliary servo input.
B3 FOIN Analog Input
Input of Focusing Signal (Negative)
Alternative Function : Write RF Sum
A2 FOIP Analog Input
Input of Focusing Signal (Positive)
Alternative Function : Read RF Sum
K2 FOO
Analog
Output
Focus servo output. PDM output of focus servo compensator.
C1 FPDOCD Analog Input Laser Power Monitor Input for CD APC / Differential negative input
D2 FPDODVD Analog Input
Laser Power Monitor Input for DVD APC / Differential negative
input
N2 FEGAINSW1
Analog
Output
Read/Write gain switch. 1
Synchronous with WLDON signal
The pin is not allowed to pull-up in circuit layout.
N3 FEGAINSW2
Analog
Output
Read/Write gain switch. 2
Synchronous with WLDON signal
The pin is not allowed to pull-up in circuit layout.
P3 FEGAINSW3
Analog
Output
Read/Write gain switch. 3
Synchronous with WLDON signal
The pin is not allowed to pull-up in circuit layout.
T1 FEGIO0
3.3V LVTTL
I/O,
5V-tolerance,
4, 8, 12, 16mA
PDR,
75K pull-down
LDD serial interface data. The pin is spike-free at power-on stage.
The pin is not allowed to pull-up in circuit layout.
Alternate function :
1. Internal monitored signal output
2. General IO
P4 FEGIO1
3.3V LVTTL
I/O,
5V-tolerance,
4, 8, 12, 16mA
PDR,
75K pull-down
LDD serial interface CLK. The pin is spike-free at power-on stage.
The pin is not allowed to pull-up in circuit layout.
Alternate function :
1. Internal monitored signal output
2. General IO
T6 FEGIO10
3.3V LVTTL
I/O,
5V-tolerance,
4, 8, 12, 16mA
PDR,
75K pull-down
PC RS232 serial receive data.
The pin is spike-free at power-on stage.
Alternate function :
1. High speed serial output port. (CLOCK)
2. Internal monitored signal output
3. LED Control Output. Initial “0” Output
4. General IO
T5 FEGIO11
3.3V LVTTL
I/O,
5V-tolerance,
4, 8, 12, 16mA
PDR,
75K pull-up
PC RS232 serial transmit data.
The pin is spike-free at power-on stage.
Alternate function :
1. High speed serial output port. (Data)
2. Internal monitored signal output
3. General IO