82563EB datasheet(24/52 Pages) INTEL

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82563EB/82564EB Gigabit Platform LAN Connect Networking Silicon

4.4

Power Supply Connections

There are two options in providing power to the 82563EB/82564EB:

• Connecting the 82563EB/82564EB to three external power supplies with nominal voltages of

3.3V, 1.9V, and 1.2V covered in Section 4.4.1.

• Powering the 82563EB/82564EB with only an external 3.3V supply, and using internal power

regulators from the 82563EB/82564EB combined with external PNP transistors to supply the

1.9V and 1.2V levels. covered in Section 4.4.3.

4.4.1

External LVR Power Delivery

The following power supply requirements apply to designs in which the 82563EB/82564EB is

supplied by external voltage regulators. These systems do not use the internal regulator logic built

into the 82563EB/82564EB as described in Section 4.4.3.

IOL

Output current LOW

3mA drivers (TTL3)

6mA drivers (TTL6)

12mA drivers (TTL12)

VOL

IOH

Output current HIGH

3mA drivers (TTL3)

6mA drivers (TTL6)

12mA drivers (TTL12)

VOH

-3

-6

-12

IIN

Input Current

TTL inputs

Inputs with pull-down resistors

TTL inputs with pull-up resistors

VIN = VDD or VSS

VIN = VDD

VIN = VSS

-10

-23

±1

-72

µA

IOZ

3-state output leakage current

VOH = VDD or VSS

-10

±110

µA

CIN

Input capacitance

Any input and bi-

directional buffer

-2.5

COUT

Output capacitance

Any output buffer

2.0

RPUD

Internal Pull-up/down Resistor

value

130

Ω

Table 17. DC and AC Characteristics (Sheet 2 of 2)

Symbol

Parameter

Condition

Min

Typ

Max

Unit

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