Microsemi makes no warranty, representation, or guarantee regarding the information contained herein or the suitability of its products and services for any particular purpose, nor does Microsemi assume any liability

whatsoever arising out of the application or use of any product or circuit. The products sold hereunder and any other products sold by Microsemi have been subject to limited testing and should not be used in conjunction

with mission-critical equipment or applications. Any performance specifications are believed to be reliable but are not verified, and Buyer must conduct and complete all performance and other testing of the products, alone

and together with, or installed in, any end-products. Buyer shall not rely on any data and performance specifications or parameters provided by Microsemi. It is the Buyer’s responsibility to independently determine suitability

of any products and to test and verify the same. The information provided by Microsemi hereunder is provided “as is, where is” and with all faults, and the entire risk associated with such information is entirely with the Buyer.

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PHYs

SPI Flash

Copper or Fiber

• Lowest BOM solution requires only two ICs

• One QSGMII MAC interface and up to four

SGMII ports with 100 Mbps and 1 Gbps

fiber support

• Unmanaged and Lightly Managed Ethernet

• Industrial switches and routers

• Customer premises equipment (CPE) and

outdoor equipment

devices, a 17-port switch can be designed using only two ICs.

The device leverages Microsemi’s 65 nm technology, resulting in one

of the most cost-effective and lowest power consumption solutions in

the industry. It includes the most advanced Ethernet energy efficiency

features for bringing green technology solutions to market.

A rich set of Ethernet switching features, such as Layer 2 forwarding

with VLAN and QoS processing, enables the delivery of differentiated

services. The VSC7421-04 device contains an 8051 CPU for light

management of the switch.

A comprehensive application software package is provided for LED

Best-In-Class Power Consumption

• Lowest power 17-port Gigabit Ethernet switch available in the

• Green energy efficiency modes including ActiPHY™, Perfect-

Reach™, and Draft IEEE 802.3az

• Two ICs reduce overall power requirements

• Optimal power consumption for all link speeds

Features

• Integrated 250 MHz 8051 CPU with 64 KB internal storage

• Serial interface for external CPU register access

• Device overheat protection

• Hardware loop detection

• Integrated fan controller

• 8K MAC addresses and 4K VLAN support

• Push/pop VLAN tag

• Supports IEEE 1149.1 JTAG boundary scan, IEEE 1149.6

JTAG, 1 Gbps SGMII, and 100BASE-FX and 1000BASE-X

Layer 2 Switching

• Independent and shared VLAN learning

• Jumbo frame support up to 12.2 kilobytes with per-port pro-

grammable MTU

• Provider Bridging (VLAN Q-in-Q) support (IEEE 802.1ad)

• 4 megabits of integrated shared packet memory

• Eight QoS queues per port with strict or deficit-weighted round

robin scheduling

• QoS classification based on IEEE 802.1p and IPv4/IPv6 DSCP

• Data rate shaper and policer per-queue, per-port for both