bcm53242m Broadcom Corp., bcm53242m Datasheet - Page 2

• Manufacturer Part Number: bcm53242m
• Description: Managed Switch With 24-fe Ports 2-gbe Interface
• Manufacturer: Broadcom Corp.

The BCM53242M is a ninth generation RoboSwitch™ design based on
the field-proven BCM5324 device. This integrated 0.13µ-CMOS device
combines all the functions of a high-speed switch system including
packet buffers, PHY transceivers, Media Access Controllers (MACs),
address management, and a non-blocking switch fabric. It is designed to
be fully compliant with the IEEE 802.3 and IEEE 802.3x specifications,
including the MAC control pause frame, auto-negotiation and with all
industry standard Ethernet and Fast Ethernet devices.
The BCM53242M contains 24 full-duplex 10BASE-T/100BASE-TX
Fast Ethernet transceivers with advanced cable diagnostics support. Each
performs all of the physical layer interface functions for 10BASE-T
Ethernet on Category 3, 4, or 5 Unshielded Twisted Pair (UTP) cable and
100BASE-TX Fast Ethernet on category 5 UTP cable. In addition, the
BCM53242M has two GMII/RGMII/TBI interfaces that provide flexible
Broadcom
RoboSwitch™ are among the trademarks of Broadcom Corporation and/or its affiliates in the United
States, certain other countries and/or the EU. Any other trademarks or trade names mentioned are the
property of their respective owners.
BROADCOM CORPORATION
5300 California Avenue,
Irvine, California 92617
© 2008 by BROADCOM CORPORATION. All rights reserved.
53242M-PB00-R
®
, the pulse logo, Connecting everything
GMII(0:1)_TXD[7:0]
GMII(0:1)_RXD[7:0]
GMII(0:1)_GTXCLK
GMII(0:1)_TX_EN
GMII(0:1)_TX_ER
GMII(0:1)_RXDV
TBI(0:1)RBC[1:0]
GMII(0:1)_RXER
GMII(0:1)_RXC
GMII(0:1)_COL
GMII(0:1)_CRS
GMII(0:1)_SD
04/09/08
RD+/-{23:0}
TD+/-{23:0}
TXD[3:0]
RXD(3:0)
MDIO
RXDV
TXEN
TXER
RXER
MDC
RDAC
TXC
COL
RXC
CRS
®
Bais
100BASE-TX
Transceivers
G
10BASE-T/
®
, the Connecting everything logo, and
BCM53242M Block Diagram
GMII/RGMII/TBI
Controllers
Controller
O V E R V I E W
MACS
GMAC
MAC/
MII
10/100/1000BASE-TX/FX connectivity. An additional MAC is
included for CPU connection via RvMII or MII interface.
The BCM53242M has a rich feature set suitable for streaming VoIP,
video and data traffic for multimedia applications. The BCM53242M
supports up to four QoS queues per port. Traffic QoS can be assigned
based on Port-ID, MAC address, 802.1p or DiffServ. Together with 4K
entries, 802.1Q VLAN, 802.1x EAPOL protocol filtering, MAC-based
link aggregation with dynamic failover, per-port bandwidth/rate control,
MAC address locking, and IGMP/MLD snooping at Layer 3 allow
system vendors to build advanced L2+ switch systems for the Multi-
Tenant/Multi-Dweller Unit (MTU/MDU) markets. The BCM53242M
provides 70+ on-chip MIB counters to collect receive and transmit
statistics for each port.
LED Controller
Control Buffer
Management
MIB Counters
3 MB Shared
Regulators
Functions
Interface
EEPROM
Address
Internal
Packet/
Global
SPI/
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Web: www.broadcom.com
5
SCK
SS#
MOSI
MISO
LEDCLK
LEDDATA
JTAG
CK25
RST#