PC82573E Intel, PC82573E Datasheet - Page 20

• Manufacturer Part Number: PC82573E
• Description: Ethernet CTLR Single Chip 10Mbps/100Mbps/1000Mbps 1.2V/2.5V/3.3V 196-Pin TFBGA
• Manufacturer: Intel

Specifications of PC82573E

• Package: 196TFBGA
• Standard Supported: IEEE 1149.1|IEEE 802.3|IEEE 802.3ab|IEEE 802.3q1|IEEE 802.3x
• Communication Mode: Full Duplex|Half Duplex
• Data Rate: 10|100|1000 Mbps
• Host Interface: PCI
• Operating Supply Voltage: 1.2|2.5|3.3 V
• Dma Support: Yes
• Maximum Power Dissipation: 1.35 W

Figure 2.
3.3.2.2
3.3.3
Table 6.
20
Minimum Requirements for Power Supply Sequencing
External LVR Power Down Sequencing
There are no specific power down sequencing and tracking requirements for the 82573
silicon. The risk of latch-up or electrical overstress is small since the only charge storing
in decoupling capacitors is left in the system.
Internally Generated Power Delivery
The 82573 has two internal linear voltage regulator controllers. The controllers use
external transistors to generate 2 of the 3 required voltages: 2.5V (nominal) and 1.2V
(nominal). These two voltages are stepped down from a 3.3V source.
3.3V Internal Power Supply Parameters
1. The peak to peak output rippled is measured at 20 MHz bandwidth within the operational range.
Rise Time
Monotonicity
Slope
Operational Range
Ripple
Overshoot
Overshoot Settling
Time
Max Difference
≤ 0.3 V
• If the 1.2V and 2.5V rails power up before 3.3V, they should never exceed the 3.3V
• At power down, all three supplies should be turned off simultaneously. If the 3.3V
Parameter
supply by more than 0.3 V.
supply powers down first, the 1.2V and 2.5V supplies must never exceed the 3.3V
supply by more than 0.3 V.
1
Time from 10% to 90% mark
Voltage dip allowed in ramp
Ramp rate at any given time between
10% and 90%
Min: 0.8*V(min)/Rise time (max)
Max: 0.8*V(max)/Rise time (min)
Voltage range for normal operating
conditions
Maximum voltage ripple (peak to peak)
Maximum overshoot allowed
Maximum overshoot allowed duration.
(At that time delta voltage should be
lower than 5 mV from steady state
voltage)
Max Difference ≤ 0.3 V
Description
1.2V (Core Supply)
3.3V
2.5V
Max Difference ≤ 0.3 V
1.2V (Core Supply)
3.3V
2.5V
Min
3.0
5
-
-
-
-
-
1500
Max
300
100
660
3.6
3
82573—Datasheet
mV/ms
Units
mV
mV
mV
ms
ms
V
Max Difference
≤ 0.3 V