EA218EC6B 데이터 시트보기 (PDF) - Zarlink Semiconductor Inc

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EA218EC6B

EA218E – 8-Port Ethernet Access Controller XpressFlow 2020 Ethernet Routing Switch Chipset

Zarlink Semiconductor Inc 

PRELIMINARY

XpressFlow-2020 Series –

Ethernet Switch Chipset

INFORMATION

EA218E

8-Port 10Mb Ethernet Access Controller

ing mode

XPRESSFLOW BUS

Characteristics Continue

9 Automatically selects the opti-

mized mode for forwarding

9 Allows manual frame forwarding

mode selection override

Multi-Media ready with QoS supports

9 Four frame transmission priority

queues

Complies with IEEE 802.1 Bridge

Standard

9 Assigns one unique MAC Address

for each port

VLAN ID Tagging & Stripping

9 Auto padding if necessary after

stripping

Automatic retry frame transmission

9 Transmit collision

9 Transmit buffer under-run

Automatic receive filtering for bad

frames for Store & Forward Mode

9 Bad FCS

9 Short events or frames under 64

bytes

9 Long events or frames over

1518/1522 bytes

Automatic statistic collection for

RMON

Local

Buffer

Memory

MANAGEMENT BUS

32

16

EA-218E

XpressFlow

Bus Interafce

Local

Buffer

Memory

Interface

Management

Bus Interafce

MAC Interface

32

Automatic

Buffer

Manager

MAC Port #0 to #7

Port 0 1 2 3 4 5 6 7

8-Port

10BaseT PHY

Port 0 1 2 3 4 5 6 7

Block Diagram –

EA218E 8-Port Ethernet Access Controller

Typical Application:

9 A 16-port Ethernet Switch with 4-Fast Ethernet

Address

Mapping

Table

Buffer

RAM

SC220

XpressFlow

Engine

Flash

ROM

RS232 Local

Control Console

Switch

Manager

CPU

DRAM

Management Bus

XpressFlow Bus

Buffer

RAM

EA218E

8-Port

Ethernet

Access

Controller

Buffer

RAM

EA218E

8-Port

Ethernet

Access

Controller

Buffer

RAM

EA234

4-Port

Ethernet

Access

Controller

8 Ethernet ports

8 Ethernet ports

Four 100M

Fast Ethernet ports

System Block Diagram --

16-Port Ethernet Switch with 4 Fast Ethernet Up-Links

© 1998 Zarlink Semiconductor, Inc.

2

Rev.2.1 – February, 1999

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