描述 Description

IP175LLF 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.

IP175LLF operates in store and forward mode. IP175LLF have a lot of rich feature for a different application, include router application, firewall, IEEE 802.1Q, IGMP snooping, policy-based QoS. It provides powerful QoS function, includes traffic policy, traffic meter, and flexible queue scheduling (WRR/WFQ/SP). In virtual LAN, IP175LLF support port-based VLAN and IEEE 802.1Q tag-tagged VLAN (up to 16 VLAN groups).

IP175LLF 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 a 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, IP175LLF supports one MII/RMII ports for router application. The external MAC can monitor or configure IP175LLF 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 a 4+1 switch.

特性 Features

? Wide operating temperature range
? IP175LLF (0°C to 70°C)
? IP175LLFI?(-40°C to 85°C)

? Built-in?5 MAC and 4 PHY
? Each port can be configured to be 10Base-T and 100Base-TX
? Up to 2K MAC addresses
? Support auto-polarity for 10Mbps
? Broadcast storm protection
? Auto MDI-MDIX
? Support one MII/RMII port
? Layer 2-4 Multi-Field classifier
? Support 8 Multi-Field 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 removed 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