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AM79C970A

PCnet™-PCI II Single-Chip Full-Duplex Ethernet Controller for PCI Local Bus Product

Advanced Micro Devices 

PIN DESIGNATIONS

Listed By Driver Type

The next table describes the various types of drivers

that are used in the PCnet-PCI II controller:

Name

LED

O6

OD6

STS6

TS3

TS6

Type

LED

Totem Pole

Open Drain

Sustained Tri-State™

Tri-State

Tri-State

IOL (mA)

12

6

6

6

3

6

IOH (mA)

-0.4

-0.4

N/A

-2

-2

-2

Load (pF)

50

50

50

50

50

50

All IOL and IOH values shown in the table above apply

to 5 V signaling. See the section ‘‘DC Characteristics’’

for the values applying to 3.3 V signaling.

A sustained tri-state signal is a low active signal that is

driven high for one clock period before it is left floating.

DO, TDO and TPO are differential output drivers. The

characteristic of these and the XTAL output are de-

scribed in the section ‘‘DC Characteristics’’.

Am79C970A

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