供应IP175D/IP175C 5口百兆以太网交换机芯片与方案（IP175D 5Port 10/100 Ethernet Integrated Switch

IP175D integrates a 6-port switch controller, SSRAM, and 5 10/100 Ethernet transceivers. Each of the transceivers compliers with the IEEE802.3, IEEE802.3u, and IEEE802.3x specifications. The DSP approach is utilized for designing transceivers with 0.16um technology; they have high noise immunity and robust performance.
IP175D operates in store and forward mode. IP175D have a lot of rich feature for different application, include router application, firewall, IEEE 802.1Q, IGMP snooping, policy-based QoS. It provides powerful QoS function, include traffic policy, traffic meter, and flexible queue scheduling (WRR/WFQ/SP). In virtual LAN, IP175D support port-based VLAN and IEEE 802.1Q tag-tagged VLAN (up to 16 VLAN groups).
IP175D support up to 2K MAC addresses, up to 16 VLANs and up to 8 Multi-Field entries. These tables are accessible through MII register. The address table can configure either “2K unicast addresses” or “1K unicast addresses and 1K multicast addresses“. The Multi-Field classification is powerful classifier (layer2 to layer 4 packet headers) in packet classification. The classifier divides incoming packets into multiple classes based on prescribed rules. Each traffic class from classifier can drop out-of-profile packets, monitor traffic, specify forwarding behavior, and specify output queue.
Beside a 5-port switch application, IP175D supports three MII/RMII ports for router application, one WAN port and one HOME/PNA or Access point. The external MAC can monitor or configure IP175D by accessing MII registers through SMI0.
MII/RMII port also can be configured to be MAC mode. It is used to interface an external PHY to work as 5+1 switch. Through SMI1 IP175D can monitor and configure external PHY
Feature :
Built in 6 MAC and 5 PHY
Each port can be configured to be 10Base-T, 100Base-TX
Up to 2K MAC address
Support auto-polarity for 10Mbps
Broadcast storm protection
Auto MDI-MDIX
Support three MII/RMII ports
Layer2-4 Multi-Field classifier
- Support 8-MultiField entry 
- Support traffic policy 
- Support Multi-Filed filter 
- Support copy to mirror port 
- Support trap to CPU port
Class of Service
- Port based, MAC address, VID, VLAN priority, IPv4 ToS, IPv6 DSCP,TCP/UDP 
  logical port and Multi-Field
QoS
- Support policy-based QoS 
- Support 4-level priority queues per port 
- WRR/WFQ/SP
Support hardware IGMP v1,v2 snooping
Support Port mirror
Support 16 VLAN (IEEE Std 802.1q)
- Port-based/tagged-based VLAN 
- Shared VLAN Learning/Independent VLAN Learning (SVL/IVL) 
- Support insert, remove tag 
- Support VLAN priority remarking
Support STP, RSTP and MSTP
Support port-based access control
Supports rate control
- In/Out port rate control 
- Traffic Policy 
- WFQ
Interrupt Pin
Support special tag
Support double tag header
Support Link quality LED for 100Mbps
Support direct, serial and dual color LED
Built i

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