The highest level of silicon integration achieved for an
8-Port 10/100 Ethernet switch device

The world's first single-chip switch

The BCM5317 integrates:

ˇ Eight transceivers (802.3u compliant)
ˇ Nine media access controllers (802.x compliant)
ˇ 256 KB packet buffer
ˇ Non-blocking switch fabric

MII interface supports an additional 100FX or 100TX
connection enabling a ninth user port

Supports up to 4K MAC addresses

Flow control: full-duplex (802.3x) and half-duplex
options supported

Supports automatic address learning and aging

Typical power consumption: 2.7W

208-pin PQFP package

Optional management features:

ˇ Low-cost MIB Autocast

function

ˇ Hardware support for Simple Network Management

Protocol (SNMP), Remote Network Monitoring (RMON)
and Spanning Tree

B C M 5 3 1 7 F E A T U R E S

8-Port Stand-Alone Unmanaged 10/100 Switch

Enables a new generation of lower cost 10/100

switches in much smaller form factors.

Utilizes field-proven industry-standard

10BASE-T/100BASE-TX Fast Ethernet

Transceiverslowering overall system

interoperability and reliability risks.

Flexible interfaces support a wider variety of

application needsfiber for long distances or an

additional 100TX port.

Sufficient address range handles all remote office,

branch office and home office needs.

Flexible architecture enables high engineering leverage

when designing multiple platforms.

CPUs are not required to initialize and run in cost-

sensitive unmanaged applicationsproviding true

Plug and Play connectivity.

Very low power and small footprint enables more cost-

effective system options.

Ability to gather and support basic management

statistics using a very low-cost microcontroller.

Low-cost management using the on-chip MIB registers

allows the collection and transmission of statistics for

each port and allows an upward migration path for

corporate users.

On-chip HP auto-MDI/MDIX feature automatically

detects and corrects for crossover cables and allows

direct switch-to-switch connection.

S U M M A R Y O F B E N E F I T S

8 - P O RT 1 0 / 1 0 0 S W I T C H W I T H O N - C H I P PA C K E T B U F F E R

BROADCOM PROPRIETARY & CONFIDENTIAL

PRODUCT

Brief

B C M 5 3 1 7

Part Number BCM5317