LG BD550 Manual De Servicio página 104

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