LG BD630, Service Manual

Page: 104 / 109

4-11
Pin Symbol Type Description
U6 FEPLAY_
3.3V LVTTL
I/O,
5V-tolerance,
12mA,
75K pull-up
Play/pause key input, active low.
The pin is spike-free at power-on stage.
Alternate function : General IO.
J3 RFIN Analog Input Differential Input of AC Coupling RF SUM Signal (Negative)
J2 RFIN2 Analog Input Differential Input of AC Coupling RF SUM Signal (Negative)
J4 RFIP Analog Input Differential Input of AC Coupling RF SUM Signal (Positive)
J1 RFIP2 Analog Input Differential Input of AC Coupling RF SUM Signal (Positive)
L4 TLO
Analog
Output
Tilt servo output
W1 FETRAYIN_
3.3V LVTTL
I/O,
5V-tolerance,
12mA,
75K pull-up
Tray_is_in Input. A Logical Low Indicates the Tray is IN.
Feedback Flag is from Tray Connector.
The pin is spike-free at power-on stage.
Alternate function : General IO.
W2 FETRAYOUT_
3.3V LVTTL
I/O,
5V-tolerance,
12mA,
75K pull-up
Tray_is_out Input.
A Logical Low Indicates the Tray is OUT.
Feedback Flag is from Tray Connector.
The pin is spike-free at power-on stage.
Alternate function : General IO.
W3 FETRAYPWM
Analog
Output
Tray PWM control output. Controlled by μ P
F4 TRINA Analog Input Input of Tracking Signal (A)
G3 TRINB Analog Input Input of Tracking Signal (B)
G4 TRINC Analog Input Input of Tracking Signal (C)
G5 TRIND Analog Input Input of Tracking Signal (D)
K1 TRO
Analog
Output
Tracking servo output. PDM output of tracking servo compensa-
tor.
K6 V14
Analog
Output
Output of voltage eference (1.4V)
D1 VDAC0
Analog
Output
Output of General DAC
G6 FVREF
Analog
Output
Output of Voltage Reference
G2 VRDCO
Analog
Output
Output Voltage of Laser Diode Control in Read APC
E3 VWDC1O
Analog
Output
Output Voltage 1 of Laser Diode Control in Write APC
A1 VWDC2O
Analog
Output
Output Voltage 2 of Laser Diode Control in Write APC
B1 VWDC3O
Analog
Output
Output Voltage 3 of Laser Diode Control in Write APC