Major Ic Internal Block Diagram And Pin Description; Mt8553/ Mt8563 Pin Description - LG BPM55 Service Manual

MAJOR IC INTERNAL BLOCK DIAGRAM AND PIN DESCRIPTION

1. MT8553/ MT8563 PIN DESCRIPTION

1-1. Pin Function
PIN NO.
E4
F6
D6 AVDD33_1
E7 AVDD33_3
K1 FECFREQ
K3
L6
L2 FEEJECT_
P4
N2
N3
L5
L4
H3
A4
B4 FPDODVD
J2 FEGAINSW1
J3 FEGAINSW2
P2 FEGAINSW3
M2
K4
SYMBOL TYPE
AUX1 Analog I/O
AVDD12 Analog Power(1.2V)
Analog Power(3.3V)
Analog Power(3.3V)
3.3V LVTTL I/O,
5V-tolerance,
Slow slew,
2, 4, 6, 8 mA PDR,
75K pull-up (3.3 V)
3.3V LVTTL I/O,
5V-tolerance,
FECMOD Slow slew,
2, 4, 6, 8 mA PDR,
75K pull-up (0 V)
FEDMO Analog Output
3.3V LVTTL I/O,
5V-tolerance,
6 mA driving,
75K pull-up (3.3 V)
3.3V LVTTL I/O,
5V-tolerance,
FEFG
6 mA PDR,
75K pull-up (3.3 V)
FEFMO Analog Output
FEFMO2 Analog Output
FEFMO3 Analog I/O
FEFMO4 Analog I/O
FOO Analog Output
FPDOCD Analog Input
Analog Input
Analog Output
Analog Output
Analog Output
3.3V LVTTL I/O,
5V-tolerance,
FEGIO0
2, 4, 6, 8mA PDR,
75K pull-down (0 V)
3.3V LVTTL I/O,
5V-tolerance,
FEGIO1
2, 4, 6, 8 mA PDR,
75K pull-down (0 V)
SERVO
Auxiliary Input. Alternateive Function : Signal Monitoring
Power Pin
Power Pin
Power Pin
Frequency selection signal output, or LDD serial interface data
or 12C SDA.
The pin is spike-free at power-on stage.
High frequency modulation mode selection signal output,
or LDO serial interface command enable.
The pin is spike-free at power-on stage.
Multifunction: Line-in input data
Disk motor control output. DAC output.
Eject/stop key input, active low.
The pin is spike-free at power-on stage.
Alternate function : General IO.
Motor Hall sensor input.
The pin is spike-free at power-on stage.
Feed motor 1 control. DAC output.
Feed motor 2 control. DAC output.
Feed motor 3 control. DAC output.
Alternative Function : Auxiliary servo input.
Feed motor 4 control. DAC output.
Alternative Function : Auxiliary servo input.
Focus servo output.
PDM output of focus servo compensator.
Laser Power Monitor Input for CD APC / Differential negative
input
Laser Power Monitor Input for DVD APC / Differential positive
input
Read gain switch 1.
Read gain switch 2.
Read gain switch 3.
LDD serial interface data.
The pin is spike-free at power-on stage.
The pin is not allowed to pull-up in circuit layout.
Alternate function :
1. Internal monitored signal output
2. General IO
LDD serial interface CLK.
The pin is spike-free at power-on stage.
The pin is not allowed to pull-up in circuit layout.
Alternate function :
1. Internal monitored signal output
2. General IO
4-5
DESCRIPTION