描述 Description

IP175BLF integrates a 5-port switch controller, SSRAM, and 4 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.

IP175BLF operates in store and forward mode. IP175BLF 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, IP175BLF support port-based VLAN and IEEE 802.1Q tag-tagged VLAN (up to 16 VLAN groups).

IP175BLF 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, IP175BLF supports one MII/RMII ports for router application. The external MAC can monitor or configure IP175BLF 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 4+1 switch.

特性 Features

Built in 5 MAC and 4 PHY

Each port can be configured to be 10Based-T, 100Base-TX

Up to 2K MAC addresses

Support auto-polarity for 10Mbps

Broadcast storm protection

Auto MDI-MDIX

Support one MII/RMII port

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/Independent VLAN Learning

- Support insert, remove tag

- Support VLAN priority remarking

Support STP, RSTP and MSTP

Support port-based access control

Supports rate control(WFQ)

- In/Out port rate control

- Traffic Policy

Interrupt Pin

Support special tag and QinQ header

Support Link quality LED for 100Mbps

Support direct LED

Built in Linear regulator control register

Support auto power saving mode

0.16um, 68-pin QFN Lead Free package