LG 3D Blu-ray LHB655, Service Manual

Page: 105 / 111

4-6
PIN NO. SYMBOL TYPE DESCRIPTION
R2 FEGIO10
3.3V LVTTL I/O,
5V-tolerance,
2, 4, 6, 8 mA PDR,
75K pull-down (3.3 V)
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. Line-in input master clock
5. Serial interface control line
6. Slave I2C clock
7. General IO
R3 FEGIO11
3.3V LVTTL I/O,
5V-tolerance,
2, 4, 6, 8mA PDR,
75K pull-down (3.3 V)
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. Line-in input bit clock
4. Serial interface control line
5. Slave I2C clock
6. General IO
N4 FEGIO3
3.3V LVTTL I/O,
5V-tolerance,
2, 4, 6, 8mA PDR,
75K pull-down (0 V)
LED Control Output. Initial 0 Output.
The pin is spike-free at power-on stage.
Alternate function :
1. Internal monitored signal output
2. General IO
P1 FEGIO4 Analog Output
Read gain switch 4
Alternate function :
1. LCD serial interface command enable.
2. LCD_DRV: Sqare wave output for LCD control.
3. Internal monitored signal output
4. Line-in input left-right clock
5. General IO.
J1 FEGIO5 Analog Output
Read gain switch 6
Alternate function :
1. SIDM
2. LCD serial interface command enable.
3. Internal monitored signal output
4. Line-in input data
5. General IO.
K7 FEGIO6 Analog Output
Read gain switch 6.
The pin is not allowed to pull-up in circuit layout
Alternate function :
1. SIDM
2. LCD serial interface command enable.
3. Internal monitored signal output
4. General IO.
K5 FEGIO7
3.3V LVTTL I/O,
5V-tolerance,
2, 4, 6, 8 mA PDR,
75K pull-down (0 V)
General IO.
The pin is spike-free at power-on stage.
The pin is not allowed to pull-up in circuit layout.
K6 FEGIO9
3.3V LVTTL I/O,
5V-tolerance,
2, 4, 6, 8 mA PDR,
75K pull-down (0 V)
General IO.
The pin is spike-free at power-on stage.
Alternate function :
1. Internal monitored signal output
2. Spoke input
3. Power on reset input, high active.
4. General IO.
D5 HAVC Analog Output Decoupling Pin for Reference Voltage of Main and Sub Beams
A1 INA Analog Input Input of Main Beam Signal (A)
B2 INB Analog Input Input of Main Beam Signal (B)
B1 INC Analog Input Input of Main Beam Signal (C)