描述 Description

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

特性 Features

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 in Linear regulator control register
Low power consumption
0.16um, 128-pin PQFP Lead Free package