RU82566DC INTEL [Intel Corporation], RU82566DC Datasheet - Page 17

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

3.5.2
Figure 2. External LVR Power-up Sequence
Table 16. 3.3V DC External Power Supply Parameters
Internal Voltage Regulator (IVR) Power Delivery
The 82566 has two IVR controllers. One for the 1.8V supply and one for the 1.0V supply. There
are two IVR modes of operation known as IVRd and IVRi. IVRd uses two external transistors to
generate the 1.8V and 1.0V supplies. In this mode, these two voltages are stepped down from a
3.3V DC source. IVRi mode uses an external transistor to generate the 1.8V supply and an internal
transistor to generate the 1.0V supply. In this mode, the 1.8V supply is stepped down from a 3.3V
DC source, and the 1.0V supply is stepped down from the 1.8V DC supply.
Operational Range
Overshoot Settling
Monotonicity
Overshoot
Rise Time
Ripple
Slope
Time
Title
82566 Gigabit Platform LAN Connect Networking Silicon Datasheet
Ramp rate at any given time between
(At that time delta voltage should be
Voltage range for normal operating
lower than 5 mV from steady state
Max: 0.8*V(max)/Rise time (min)
Maximum voltage ripple (peak to
Min: 0.8*V(min)/Rise time (max)
Maximum overshoot allowed
Maximum overshoot allowed
Time from 10% to 90% mark
Voltage dip allowed in ramp
peak) @ f < 20 MHz
10% and 90%
Description
conditions
duration.
voltage)
Min
0.1
3.0
24
-
-
-
-
0.05
Max
100
100
100
9.5
3.6
0
mV/ms
Units
mV
mV
mV
ms
ms
V
13