AM79C940 datasheet(82/122 Pages) AMD

82 / 122 page

AMD

Am79C940

NETWORK INTERFACES

External Address Detection Interface

(EADI)

The External Address Detection Interface can be used

to implement alternative address recognition schemes

outside the MACE device, to complement the physical,

logical and promiscuous detection supported internally.

The address matching, and the support logic necessary

to capture and present the relevant data to the external

table of address is application specific. Note that since

the entire 802.3 packet after SFD is made available, rec-

ognition is not limited to the destination address and/or

type fields (Ethernet only). Inter-networking protocol

recognition can be performed on specific header or LLC

information fields.

QH’

74LS595

74LS245

SER

SRCK

RCK

QH’

QH–A

A8–A1

B8–B1

EADI

Pins

SER

SRCK

RCK

A8–A1

B8–B1

SRD

SRDCLK

SF/BD

Logic

Block

EAM/R

Am99C10

D15–D0

MTCH

CAM

Programming

Interface

Databus

16235C-13

QH–A

EADI Feature – Simple External CAM Interface

AM79C940 Datasheet(PDF) 82 Page - Advanced Micro Devices

AM79C940 Datasheet(HTML) 82 Page - Advanced Micro Devices

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