82575EB Datasheet, PDF (39/62 Pages) Intel Corporation – Intel® 82575EB Gigabit Ethernet Controller Datasheet

Voltage Ramp and Sequencing Recommendations — Intel^® 82575EB Gigabit Ethernet Controller
Table 4.
1.8 V Supply Voltage Ramp
Parameter
Rise Time
Monotonicity
Slope
Operational
Range
Ripple
Overshoot
SettlingTime
Overshoot
Description
Time from 10% to 90% mark
Voltage dip allowed in ramp
Ramp rate at any time between 10% to 90%
Voltage range for normal operating
conditions
Maximum voltage ripple at a bandwidth
equal to 1 MHz
Overshoot time upon ramp²
Maximum voltage allowed^b
Min
0.1
N/A
14
1.71
N/A
N/A
N/A
Max
100¹
0
60000
1.89
40
0.1
100
1. Good design practices achieve voltage ramps to within the regulation bands in approximately 20 ms or less.
2. Excessive overshoot can affect long term reliability.
Unit
ms
mV
mV/ms
V
mV_peak-peak
ms
mV
Table 5.
1.0 V Supply Voltage Ramp
Parameter
Rise Time
Monotonicity
Slope
Operational
Range
Ripple
Overshoot
SettlingTime
Overshoot
Description
Time from 10% to 90% mark
Voltage dip allowed in ramp
Ramp rate at any time between 10% to
90%
Voltage range for normal operating
conditions
Maximum voltage ripple at a bandwidth
equal to 1 MHz
Overshoot time upon ramp²
Maximum voltage allowed^b
Min
0.1
N/A
7.6
0.95
N/A
N/A
N/A
Max
100¹
0
33600
1.05
40
0.05
100
1. Good design practices achieve voltage ramps to within the regulation bands in approximately 20 ms or less.
2. Excessive overshoot can affect long term reliability.
Unit
ms
mV
mV/ms
V
mV_peak-peak
ms
mV
317679-004
Revision: 2.11
January 2011
Intel^® 82575EB Gigabit Ethernet Controller
Datasheet
39