82573 Datasheet, PDF (17/39 Pages) Intel Corporation – GbE Controllers

Datasheet—82573
3.0
3.1
Table 1.
3.2
Voltage, Temperature, and Timing Specifications
Absolute Maximum Ratings
Absolute Maximum Ratings¹
Symbol
Parameter
Min
Max
Unit
Tstg
Storage temperature
-40
125
°C
VCC (3.3)
DC supply voltage on 3.3V pins
with respect to VSS
-0.3
6.6
V
VCC (2.5)
DC supply voltage on 2.5V pins
with respect to VSS²
-0.3
5.0
V
VCC (1.2)
DC supply voltage on 1.2V pins
with respect to VSS^b
-0.3
2.4
V
Vin
Input voltage (digital inputs)
-1.0
VCC (3.3) + 0.3
(less than 6.6 V)
V
AVin
Analog input voltage (digital
inputs)
-1.0
VCC (2.5) + 0.3
(less than 5.0 V)
V
R_PUD
Pull-up/pull-down Resistor Value
15
50
KΩ
1. Maximum ratings are referenced to ground (VSS). Permanent device damage is likely to occur if the ratings
in this table are exceeded for an indefinite duration. These values should not be used as the limits for normal
device operations. This specification is not guaranteed by design or simulations.
2. During normal device power up and power down, the 2.5V and 1.2V supplies must not ramp before the 3.3V.
Recommended Operating Conditions
Table 2.
3.3
Recommended Operating Conditions
Symbol
T_OP
V_PERIF
V_D
V_A
Parameter
Operating Temperature with
external regulators
Operating temperature with
on-die 2.5V regulator
Periphery Voltage Range
Core Digital Voltage Range
Analog VDD Range
Condition
3.3 V ± 3%
1.2 V ± 5%
2.5 V ± 5%
Min
0
0
3.0
1.14
2.375
Typical
3.3
1.2
2.5
Max
70
55
3.6
1.26
2.625
Units
°C
°C
V
V
V
Power Supply Connections
There are three options in providing power to the 82573:
• Connecting the 82573 to three external power supplies with nominal voltages of
3.3V, 2.5V, and 1.2V. This is covered in Section 3.3.1.
• Powering the 82573 with only an external 3.3V supply and using internal power
regulators from the 82573 combined with external PNP transistors to supply the
2.5V and 1.2V levels. This is covered in Section 3.3.3.
• Using the 2.5V internal (on-die) regulator combined with an external PNP transistor
to supply the 1.2V level. This is covered in Section 3.3.3.
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