IP1726-LF

Product Summary

The IP1726-LF is a 26-port 10/100m smart switch controller. The IP1726-LF embeds 1.5Mb internal packet buffer and stores up to 4K MAC address entries, making it suitable for the generic switch application. In addition, the IP1726-LF supports a wide range of data rate for both egress and ingress, which is useful in the ETTH(Ethernet to the Home) application. The higher layer data packet such as BPDU, IGMP, OSPF can be forwarded to either the 25th or 26th (CPU) port. The flexible trunk configuration allows the user to scale the switch interconnection bandwidth. When the port mirroring function is enabled, the data traffic on the source port will be forwarded to a specified destination port, making the switch administration easier. Supporting up to 26 port based VLAN groups, the IP1726-LF can be configured to fit various traffic partitions. The CoS function is accomplished by configuring the priority of the physical port, the 802.1Q VLAN tag and IP DSCP(Differentiated Service Code Point). In order to fit the application of some special environment, the address learning and the MAC address table aging can be disabled.

Parametrics

IP1726-LF absolute maximum ratings: (1)Supply Voltage I/O VDDI/O: –0.5, +3.6V; (2)Supply Voltage Core VDDCore: –0.5, +1.9V; (3)Input Voltage VI: –0.5, VDDI/O V; (4)Output Voltage VO: –0.5, VDDI/O V; (5)Storage Temperature TSTG: -65, +150 °C; (6)Operation Temperature TOPT: 0, +70 °C.

Features

IP1726-LF features: (1) Embeds 1.5 Mb packet buffer; (2) Handles up to 4K MAC address entries; (3) Supports non-blocking wire speed operation; (4) Provides 24-port SS-SMII and 2-port MII; (5) Supports 2 ports selectable normal MII, reverse MII; (6) All I/O signals can operate at 3.3V or 1.8V.; (7) Supports up to 26 port based VLAN group; (8) Supports 256 levels of data rate control; (9) 128 pin QFP package; (10) Adjustable I/O driving capability; (11) Support packet length up to 1536 Bytes; (12) Spanning Tree state support.; (13) Supports 3 kinds of port mirrioring methods; (14) HOL blocking prevention; (15) Only one 25MHz crystal needed; (16) Broadcast storm control support; (17) Programmable MAC address table through 2 serial pins.; (18) Support Lead Free package (Please referto the Order Information).

Diagrams