AMD-K6-2ESLASH233AMZ datasheet(282/332 Pages) AMD

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264

Electrical Data

Chapter 14

AMD-K6™-2E Processor Data Sheet

22529B/0—January 2000

Preliminary Information

Pin Connection

Requirements

For proper operation, the following requirements for signal pin

connections must be met:

Do not drive address and data signals into large capacitive

loads at high frequencies. If necessary, use buffer chips to

drive large capacitive loads.

Leave all NC (no-connect) pins unconnected.

Unused

inputs

should

always

connected

appropriate signal level.

•

Active Low inputs that are not being used should be

connected to VCC3 through a 20-kW pullup resistor.

•

Active High inputs that are not being used should be

connected to GND through a pulldown resistor.

Reserved signals can be treated in one of the following ways:

•

As no-connect (NC) pins, in which case these pins are left

unconnected

•

As pins connected to the system logic as defined by the

industry-standard Socket 7 and Super7 interfaces

•

Any combination of NC and Socket 7 pins

Keep trace lengths to a minimum.

14.7

I/O Buffer Characteristics

All of the AMD-K6-2 E process o r inputs , outputs, and

bidirectional buffers are implemented using a 3.3 V buffer

design. AMD has developed a model that represents the

characteristics of the actual I/O buffer to allow system

designers to perform analog simulations of AMD-K6-2E

processor signals that interface with the system logic. Analog

simulations are used to determine a signal’s time of flight from

source to destination and to ensure that the system’s signal

quality requirements are met. Signal quality measurements

include overshoot, undershoot, slope reversal, and ringing.

I/O Buffer Model

AMD provides a model of the AMD-K6-2E processor I/O buffer

for system designers to use in board-level simulations. This I/O

buf f er m o del conform s to the I/O Buffe r In forma t ion

Specification (IBIS). The I/O model contains voltage versus

current (V/I) and voltage versus time (V/T) data tables for

accurate modeling of I/O buffer behavior.

AMD-K6-2E/233AMZ Datasheet(PDF) 282 Page - Advanced Micro Devices

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