DAVICOM DM9103EP

DM9103EP Product Brief
Three Port Ethernet Switch Controller with PCI Interface
Jan. 2007 Rev.1.0
The DM9103 is a fully integrated, high performance, and cost-effective fast Ethernet switch controller
with one general PCI bus interface, two ports 10/100Mbps PHY, and one port MII or RMII interface.
Each port of the DM9103 provides four priority 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 applications. 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 integrated two ports PHY are compliant with IEEE 802.3u standards. The MII interface provides
the flexibility to connect Ethernet PHY, and it can be configured as Reversed MII interface for SoC
with MII interface. An alternative interface, the RMII interface, is also provided to connect the lower
pin count Ethernet PHY or SoC with RMII interface
Block Diagram
Port 0
MDI/MDIX
Port 1
MDI/MDIX
10/100M
PHY
10/100M
MAC
10/100M
PHY
10/100M
MAC
Port 2
MII / RMII
PCI BUS
Switch
Fabric
Switch
Engine
Switch
Controller
Memory
BIST
Embedded
Memory
Memory
Management
10/100M
MAC
Processor
Interface
HOST
MAC
Control
Registers
MIB
Counters
EEPROM
Interface
EEPROM
Specifications
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Ethernet Switch with two 10/100Mb PHY, one MII/RMII, and PCI bus interface
Support Reverse-MII
PCI bus master architecture
EEPROM interface for power up configurations
Support TCP/UDP/IPv4 checksum offload
Support HP Auto-MDIX
Support IEEE 802.3x Flow Control in Full-duplex mode
Support Back Pressure Flow Control in Half-duplex mode
Per port support 4 priority queues by Port-based, 802.1P QoS, and IP TOS priority
Support 802.1Q VLAN up-to 16 VLAN group
Support VLAN ID tag/un-tag options
Per port support bandwidth, ingress and egress rate control
Support Broadcast Storming filter function
Support Store and Forward switching approach
Support up-to 1K Uni-cast MAC addresses
Automatic aging scheme
Support MIB counters for diagnostic
128-pin LQFP 1.8V internal core, 3.3V I/O with 5V tolerant
Application
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VoIP CPE (ATA, IP Phone)
IP STB
Industrial Control
Ordering Information
Part Number
Pin Count
Package
DM9103EP
128
LQFP (Pb-free)
DAVICOM Semiconductor, Inc.
No.6, Li-Hsin Rd.VI, Science Park, Hsin-Chu, Taiwan, R.O.C.
TEL: 886-3-5798797
FAX: 886-3-5646929
E-mail: sales@davicom.com.tw