Read LG 42LH50YD (CHASSIS:LJ91C) Service Manual online
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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
levels
Power-Up Sequence
either 1.2V, 1.8V, 2.5V, 3.3V
either 1.2V, 1.8V, 2.5V, 3.3V
Reset Input
Min 100us
Min 10ms
1.2V rail at 1.14V
1.8V rail at 1.71V
2.5V rail at 2.375V
3.3V rail at 3.135V
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
minimum operating voltage
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