Major Ic Internal Block Diagram And Pin Description; Ic501 (Mt8550L) - LG BD630N Service Manual

MAJOR IC INTERNAL BLOCK DIAGRAM AND PIN DESCRIPTION

1. IC501 (MT8550L)

1-1. Pin Function
Pin Symbol
J6 AGND33_1
J5 AGND33_2
L5 AGND33_3
F5 AGND12_1
L6 AGND12_2
D3 AUX1
E5 AVDD12_1
K3 AVDD12_2
H5 AVDD33_1
K4 AVDD33_3
P2 FECFREQ
R3 FECMOD
M1 FEDMO
T4 FEEJECT_
K5 EQBIAS
V3 FEFG
L3 FEFMO
Type
Analog Ground Analog Ground
Analog Ground Analog Ground
Analog Ground Analog Ground
Analog Ground Analog Ground
Analog Ground Analog Ground
Auxiliary Input
Analog I/O Alternateive Function :
Signal Monitoring
Analog
Power Pin
Power(1.2V)
Analog
Power Pin
Power(1.2V)
Analog
Power Pin
Power(3.3V)
Analog
Power Pin
Power(3.3V)
3.3V LVTTL
I/O,
5V-tolerance,
Frequency selection signal output, or LDD serial interface data or
Slow slew,
12C SDA. The pin is spike-free at power-on stage.
2, 4, 6, 8mA
PDR,
75K pull-up
3.3V LVTTL
I/O,
5V-tolerance, High frequency modulation mode selection signal output, or LDO
Slow slew, serial interface command enable. The pin is spike-free at power-
2, 4, 6, 8mA on stage.
PDR,
75K pull-up
Analog Disk motor control output.
Output PWM output.
3.3V LVTTL
I/O, Eject/stop key input, active low.
5V-tolerance, The pin is spike-free at power-on stage.
12mA driving, Alternate function : General IO.
75K pull-up
Exter Bias Connection for Circuits in EQRF Block & SATA Block.
Analog The external resitor need meet the precision for SATA require-
Output ment. (23.1K, 1%)
3.3V LVTTL
I/O,
5V-tolerance,
Motor Hall sensor input. The pin is spike-free at power-on stage.
12mA
PDR, 75K
pull-up
Analog
Feed motor control. PWM output.
Output
4-7
Description