DM9003EP Datasheet, PDF (1/2 Pages) Davicom Semiconductor, Inc. – Two Port Ethernet Switch Controller with 16-bit Processor

DM9003EP Product Brief
Two Port Ethernet Switch Controller with 16-bit Processor
Interface
Dec. 2006 Rev.1.0
The DM9003EP is a fully integrated, high performance and cost-effective fast
Ethernet switch controller with one general processor bus interface, two ports
10/100Mb PHY. Each port of the DM9003EP provides four priorities transmit queues
that can be defined by port-based, 802.1p VLAN, or IP packet ToS field
automatically, to fit the various bandwidth and latency requirement of data, voice, and
video application. Each port also supports ingress and/or egress rate control to provide
proper bandwidth. And up to 16 groups of 802.1Q VLAN with Tag/Un-tag functions
are supported to provide efficient packet forwarding.
The TCP/UDP/IPv4 checksum generation and checking functions are also provided
by processor port to offload the processor compute loading. The integrated two ports
PHY are compliant with IEEE 802.3u standards and support HP auto-MDI/MDIX for
twisted pair cables transmit/receive direction switching automatically.
Block Diagram
Port 0
MDI/MDIX
10/100M
PHY
10/100M
MAC
Port 1
MDI/MDIX
10/100M
PHY
10/100M
MAC
Switch Fabric
Switch Engine
Embedded
Memory
Memory
BIST
Switch
Controller
Memory
Management
8 , 16 bit
Processor
Bus
Processor
Interface
host
MAC
Control
Registers
MIB
Counters
EEPROM
Interface
EEPROM