LG 50PK550 Service Manual page 30

Power-Up Sequence
BCM3556 (Main Chip)
There are no power sequence requirements. Any sequence will be acceptable
All supplies have a minimum ramp up time of 100us. There is no maximum ramp up time restriction
RESET should be held active during ramp up and at least 10ms after all voltages are above 95% of their
specified nominal levels
either 1.2V, 1.8V, 2.5V, 3.3V
either 1.2V, 1.8V, 2.5V, 3.3V
Reset Input
Customer Oriented R&D
Min 100us
1.2V rail at 1.14V
1.8V rail at 1.71V
2.5V rail at 2.375V
3.3V rail at 3.135V
95%
All power rails above
minimum operating voltage
Min 10ms
Breakthrough