EA218E Datasheet, PDF (3/28 Pages) Zarlink Semiconductor Inc – EA218E 8-Port Ethernet Access Controller XpressFlow 2020 Ethernet Routing Switch Chipset

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