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ZL50409 Datasheet(PDF) 3 Page - Zarlink Semiconductor Inc

Part # ZL50409
Description  Managed 9-Port 10/100M Ethernet Switch
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Manufacturer  ZARLINK [Zarlink Semiconductor Inc]
Direct Link  http://www.zarlink.com
Logo ZARLINK - Zarlink Semiconductor Inc

ZL50409 Datasheet(HTML) 3 Page - Zarlink Semiconductor Inc

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ZL50409
Data Sheet
3
Zarlink Semiconductor Inc.
Description
The ZL50409 is a low density, low cost, high performance, non-blocking Ethernet switch chip. A single chip
provides 8 ports at 10/100 Mbps, 1 uplink port at 10/100 Mbps, and a CPU interface for managed, lightly managed
and unmanaged switch applications. The chip supports up to 4 K MAC addresses and up to 4 K tagged-based
Virtual LANs (VLANs).
With strict priority and/or WFQ transmission scheduling and WRED dropping schemes, the ZL50409 provides
powerful QoS functions for various multimedia and mission-critical applications. The chip provides 2 transmission
priorities (4 priorities for uplink port) and 2 levels of dropping precedence. Each packet is assigned a transmission
priority and dropping precedence based on the VLAN priority field in a VLAN tagged frame, or the DS/TOS field, or
the UDP/TCP logical port fields in IP packets. The ZL50409 recognizes a total of 16 UDP/TCP logical ports, 8
hard-wired and 8 programmable (including one programmable range).
The ZL50409 provides the ability to monitor a link, detect a simple link failure, and provide notification of the failure
to the CPU. The CPU can then failover that link to an alternate link.
The ZL50409 supports up to 8 groups of port trunking/load sharing. Each group can contain up to 8 ports. Port
trunking/load sharing can be used to group ports between interlinked switches to increase the effective network
bandwidth.
In half-duplex mode, all ports support backpressure flow control, to minimize the risk of losing data during long
activity bursts. In full-duplex mode, IEEE 802.3x flow control is provided. The ZL50409 also supports a per-system
option to enable flow control for best effort frames, even on QoS-enabled ports.
Statistical information for SNMP and the Remote Monitoring Management Information Base (RMON MIB) are
collected independently for all ports. Access to these statistical counters/registers is provided via the CPU interface.
SNMP Management frames can be received and transmitted via the CPU interface, creating a complete network
management solution.
The ZL50409 is fabricated using 0.18 micron technology. The ZL50409 is packaged in a 208-pin Ball Grid Array
package.


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