LG BPM55 Service Manual page 78

PIN NO. SYMBOL
C3 IND
D2 INE
D3 INF
C2 ING
C1 INH
G6 MPXOUT1
G5 MPXOUT2
F4 MPXOUT3
K2 FEOSCEN
G1 RFIN
G2 RFIP
G3 TLO
M1 FETRAYIN_
L3 FETRAYOUT_
P3 FETRAYPWM
E1 TRINA
E2 TRINB
F3 TRINC
F2 TRIND
H4 TRO
E3 V14
A2 VDAC0
A3 FVREF
C4 VWDC2O
B3 VWDC3O
TYPE
Analog Input Input of Main Beam Signal (D)
Analog Input Input of Sub-Beam Signal (E)
Analog Input Input of Sub-Beam Signal (F)
Analog Input Input of Sub-Beam Signal (G)
Analog Input Input of Sub-Beam Signal (H)
Multiplexer Output 1 for Signal Monitoring.
The pin is not allowed to pull-up in circuit layout.
Analog Output
Alternate function : Internal monitored signal output / General
output.
Multiplexer Output 2 for Signal Monitoring. T
he pin is not allowed to pull-up in circuit layout.
Analog Output
Alternate function : Internal monitored signal output / General
output.
Multiplexer Output 3 for Signal Monitoring.
The pin is not allowed to pull-up in circuit layout.
Analog Output
Alternate function : Internal monitored signal output / General
output.
3.3V LVTTL I/O,
5V-tolerance, High frequency modulation enable signal output, or LDD serial
Slow slew, interface CLK or 12C SCL.
2, 4, 6, 8 mA PDR, The pin is spike-free at power-on stage.
75K pull-up (3.3 V)
Analog Input Differential Input of AC Coupling RF SUM Signal (Negative)
Analog Input Differential Input of AC Coupling RF SUM Signal (Positive)
Analog Output Tilt servo output
3.3V LVTTL I/O, Tray_is_in Input. A Logical Low Indicates the Tray is IN. Feed-
5V-tolerance, back Flag is from Tray Connector.
6 mA, The pin is spike-free at power-on stage.
75K pull-up (3.3 V) Alternate function : General IO.
3.3V LVTTL I/O, Tray_is_out Input. A Logical Low Indicates the Tray is OUT.
5V-tolerance, Feedback Flag is from Tray Connector.
6 mA, The pin is spike-free at power-on stage.
75K pull-up (3.3 V) Alternate function : General IO.
Analog Output Tray DAC / PWM control output. Controlled by microP
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)
Tracking servo output.
Analog Output
PDM output of tracking servo compensator.
Analog Output Output of voltage eference (1.4V)
Analog Output Output of General DAC
Analog Output Output of Voltage Reference
Analog Output Output Voltage 2 of Laser Diode Control in APC
Analog Output Output Voltage 3 of Laser Diode Control in APC
4-7
DESCRIPTION