MEA-208 Zarlink Semiconductor, Inc., MEA-208 Datasheet - Page 2

• Manufacturer Part Number: MEA-208
• Description: 6+2 Ports Ethernet Access Controller
• Manufacturer: Zarlink Semiconductor, Inc.

XpressFlow-2020 Series –
Ethernet Switch Chipset
© 1998 Vertex Networks, Inc.
1999
Characteristics Continue
t Works together with SC-220 Xpress-
Forwards frames at full line-rate
t Half and Full Duplex operation
t Programmable Flow Control
t Supports Store-&-Forward frame for-
t Multi-Media ready with QoS supports
t Complies with IEEE 802.1 Bridge
t VLAN ID Tagging & Stripping
t Automatic retry frame transmission
t Automatic receive filtering for bad
t Automatic statistic collection for
Flow Engine
warding mode
Standard
frames for Store & Forward Mode
RMON
Distributed Flow Caching™ to re-
duce frame forwarding latency
Jam Collision for Half Duplex
Mode
Transmit Flow Control Frame for
IEEE 802.3x Full Duplex Mode
Four frame transmission priority
queues
Assigns one unique MAC Address
for each port
Auto padding if necessary after
stripping
Transmit collision
Transmit buffer under-run
Bad FCS
Short events or frames under 64
bytes
Long events or frames over
1518/1522 bytes
P
R
E
L
I
M
Typical Application
I
N
A
A 22-port Ethernet Switch with 2-Fast Ethernet
R
Memory
Buffer
Address
Mapping
Local
Buffer
Buffer
Table
RAM
RAM
Y
22-Ports Ethernet Switch with 2 Fast Ethernet Up-Links
8 Ethernet ports
:
6+2 Ports 10Mb Ethernet Access Controller
Controller
EA218E 8-Port Ethernet Access Controller
XpressFlow
EA218E
Ethernet
Access
I
8-Port
SC220
Engine
EA-218
2
N
Interface
Memory
Buffer
Local
Port 0
Port 0
100Base-Tx
2-Port
F
PHY
System Block Diagram --
O
Block Diagram –
Buffer
1
1
RAM
Management Bus
Bus Interafce
XpressFlow Bus
XpressFlow
Flash
ROM
R
MAC Port #0 to #7
2
2
8 Ethernet ports
XPRESSFLOW BUS
MANAGEMENT BUS
32
Controller
M
EA218E
Ethernet
Access
MAC Interface
8-Port
3
3
Control Console
A
RS232 Local
Manager
10BaseT PHY
32
Switch
4
4
CPU
Bus Interafce
Management
T
6-Port
I
5
5
Buffer
RAM
16
100M Fast Ethernet ports
Six 10M Ethernet + two
O
6
6
N
DRAM
Controller
Automatic
Ethernet
Manager
Access
EA218
8-Port
Buffer
Rev. 2.1- February,
7
7
EA218