SC220 ZARLINK [Zarlink Semiconductor Inc], SC220 Datasheet - Page 3

• Manufacturer Part Number: SC220
• Description: XpressFlow 2020 Ethernet Routing Switch Chipset
• Manufacturer: ZARLINK [Zarlink Semiconductor Inc]

XpressFlow-2020 Series –
Ethernet Switch Chipset
© 1998 Vertex Networks, Inc.
1999
t Built-in address to port resolution
t Supports unicast, multicast, and broadcast
t Address Filtering
t VLAN classification & verification
t Supports Store-&-Forward Frame Forward-
t Collects statistics for RMON
Characteristics Continue
frames
ing Mode
Embedded 32-bit HISC™ (High density
Instruction Set Core) Processor
Optimized architecture for switch appli-
cations
Loadable firmware for easy upgrade
Destination & Source MAC address
matching & filtering
Up to 62 groups
Level 1 and 2 mapping
VLAN ID tagging & stripping
Auto padding if necessary after stripping
P
R
E
L
I
M
I
N
Typical Application
A
R
ADDRESS
CONTROL
MAPPING
SRAM
MEMORY
BUFFER
CAM
TABLE
A 16-port Ethernet Switch with 4-Fast Ethernet
Mapping
Address
Buffer
Buffer
Table
RAM
RAM
Y
16-Port Ethernet Switch with 4 Fast Ethernet Up-Links
16
32
8 Ethernet ports
I
Controller
XpressFlow
2
SC220
XpressFlow
Engine
EA208E
Ethernet
Access
8-Port
SC220
Engine
N
Interface
Interface
Memory
SC220 XpressFlow Engine
Control
Buffer
CAM
:
F
System Block Diagram --
Block Diagram –
O
16
32
32
Buffer
RAM
R
Registers
XpressFlow Bus
XpressFlow Bus
Management Bus
Flash
HISC
ROM
I/O
XpressFlow BUS
M
Interafce
32
32
8 Ethernet ports
Controller
Ethernet
EA208E
A
Access
8-Port
32
HISC Core
Control Console
T
32
XpressFlow Engine
RS232 Local
16
32
Manager
Switch
CPU
I
O
Buffer
RAM
Automatic
Interface
Manager
Mngmt
Buffer
N
Bus
Rev. 4.5 – February
Fast Ethernet ports
32
32
32
Four 100M
DRAM
Controller
Ethernet
Access
EA234
4-Port
32
SC220