Major Ic Internal Block Diagram And Pin Description; Ic501 (Mt8580) - LG BH9530TW Service Manual

MAJOR IC INTERNAL BLOCK DIAGRAM AND PIN DESCRIPTION

1. IC501 (MT8580)

1-1. Pin Function
PIN NO.
F20 AGND33_1
G18 AGND33_2
F17 AGND33_3
G21 AGND12_1
F19 AGND12_2
E23 AVDD12_1
C15 AVDD12_2
F18 AVDD33_1
E18 AVDD33_3
E17
E14 FECFREQ
F14
A11
D10 FEEJECT_
C9
B11
A12
B12
C12
A14
D21
E21 FPDODVD
D15 FEGAINSW1
C13 FEGAINSW2
D13 FEGAINSW3
C10
SYMBOL TYPE
Analog Ground
Analog Ground
Analog Ground
Analog Ground
Analog Ground
Analog Power (1.2 V)
Analog Power (1.2 V)
Analog Power (3.3 V)
Analog Power (3.3 V)
AUX1 Analog I/O
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 PDR,
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, 8 mA PDR,
75K pull-down (0 V)
Analog Ground
Analog Ground
Analog Ground
Analog Ground
Analog Ground
Power Pin
Power Pin
Power Pin
Power Pin
Auxiliary Input. Alternateive Function : Signal Monitoring
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 LDD serial interface command enable.
The pin is spike-free at power-on stage.
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
4-7
DESCRIPTION