LG BD550 Manual De Servicio página 101

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