RU82566DC INTEL [Intel Corporation], RU82566DC Datasheet - Page 18

• Manufacturer Part Number: RU82566DC
• Description: 82566 Gigabit Platform LAN Connect
• Manufacturer: INTEL [Intel Corporation]

82566 Gigabit Platform LAN Connect Networking Silicon Datasheet
3.5.2.1
3.5.2.2
14
Figure 3. Internal LVR Power-up Sequence
In-Rush Current
To meet 375 mA in-rush current requirements, the ramp time should be 5 ms to 100 ms on the
3.3V DC power rail. For faster ramps (100 µs to 5 ms), higher in-rush current is expected due to the
high charging current of the decoupling capacitors on the 3.3V DC power rail.
82566 Power Up Sequence (Internal LVR)
The 82566 controls the power up sequence internally and automatically with the following
conditions:
The ramp is delayed internally, with T
power down, there is no requirement (only charge that remains is stored in the decoupling
capacitors).
•
•
•
3.3V must be the source for the internal LVR.
1.8V will never exceed the 3.3V.
1.0V will never exceed 3.3V or 1.8V.
delay
depending on the rising slope of the 3.3V ramp. For