82551QM datasheet(13/120 Pages) INTEL

13 / 120 page

Networking Silicon — 82551QM

Datasheet

4.0

Signal Descriptions

4.1

Signal Type Definitions

Table 2.

Signal Type Descriptions

Type

Name

Description

Input

The input pin is a standard input only signal.

OUT

Output

The output pin is a Totem Pole Output pin and is a standard

active driver.

Tri-State

The tri-state pin is a bidirectional, input/output pin.

STS

Sustained Tri-State

The sustained tri-state pin is an active low tri-state signal owned

and driven by one agent at a time. The agent asserting the STS

pin low must drive it high at least one clock cycle before floating

the pin. A new agent can only assert an STS signal low one

clock cycle after it has been tri-stated by the previous owner.

Open Drain

The open drain pin allows multiple devices to share this signal

as a wired-OR.

Analog Input

The analog input pin is used for analog input signals.

Analog Output

The analog output pin is used for analog output signals.

Bias

The bias pin is an input bias.

DPS

Digital Power

Supply

Digital power or ground for the device.

APS

Analog Power

Supply

Analog power or ground for the device.

82551QM Datasheet(PDF) 13 Page - Intel Corporation

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