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BCM5338M Datasheet(PDF) 2 Page - Broadcom Corporation. |
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BCM5338M Datasheet(HTML) 2 Page - Broadcom Corporation. |
2 / 2 page ![]() O V ERVI EW ® Phone: 949-450-8700 Fax: 949-450-8710 E-mail: info@broadcom.com Web: www.broadcom.com BROADCOM CORPORATION 16215 Alton Parkway, P.O. Box 57013 Irvine, California 92619-7013 © 2004 by BROADCOM CORPORATION. All rights reserved. 5338M-PB01-R 04/21/04 Broadcom®, the pulse logo, MIB Autocast® , DigiPHY™, and Connecting everything® are trademarks of Broadcom Corporation and/or its subsidiaries in the United States and certain other countries. All other trademarks mentioned are the property of their respective owners. The BCM5338M switch is a sixth-generation switch designed based on the field-proven industry-leaders, the BCM5328 and BCM5328M switches. This device combines all of the functions of a high-speed switch system—including packet buffers, PHY transceivers, MACs, address management, and a non-blocking switch fabric—into a single 0.18-micron CMOS device. The BCM5338M complies with IEEE 802.3, IEEE 802.3u, and IEEE 802.3x specifications, including the MAC control PAUSE frame and auto-negotiation subsections, providing compatibility with all industry-standard Ethernet and Fast Ethernet devices. The BCM5338M contains eight full-duplex 10BASE-T/100BASE-TX Fast Ethernet transceivers, each of which performs all of the physical layer interface functions for 10BASE-T Ethernet on Category 3, 4, or 5 Unshielded Twisted-Pair (UTP) cable and performs 100BASE-TX Fast Ethernet functions on Category 5 UTP cable. In addition to the robust 10/100 Ethernet DigiPHY™, MIB Autocast, and management functions, the eight-port switch in the BCM5338M has a rich feature set suitable for voice over IP and video and data traffic for multimedia applications. The four-level priority queues mapped to IEEE 802.1p, Diffserv, ToS, and CoS, 512 entries IEEE 802.1Q VLAN, IEEE 802.1x EAPOL protocol filtering, MAC based trunking with link fail-over, per-port bandwidth/rate control, MAC address locking, IGMP snooping at layer2/3, and port protection function, allow system vendors to build advanced L2+ switch systems for the multitenant/multidweller unit (MDU/MTU) markets. The proprietary MIB Autocast function encapsulates the on-chip MIB statistics and sends them out automatically on a predefined port (or ports) at programmed intervals. The BCM5338M periodically transmits a legal Ethernet frame on a designated port. The frames can be intercepted by an external management probe or a dedicated network management application resident on any node within the network. This function requires only a small, low-cost microcontroller to initialize and configure the device. The BCM5338M provides an on-chip MIB statistics register to collect, receive, and transmit statistics for each port. Additionally it provides direct hardware support for the Ether-like MIB, Bridge MIB, MIB II (interfaces) and the first four groups of the RMON MIB. All nine groups of RMON can be supported by using additional capabilities, such as port mirroring/snooping, together with an external microcontroller to process some MIB attributes. The MIB registers can be accessed through the serial management port by an external microcontroller. DMA Interface MAC 256-KB Packet Buffer LED Interface Switch Fabric 512 Tag IEEE 802.1Q VLAN SPI/CPU Interface Priority Map Register IEEE 802.1p Internal Osc.Circuit Auto MDI/MDIX Auto MDI/MDIX Auto MDI/MDIX Auto MDI/MDIX Auto MDI/MDIX Auto MDI/MDIX Auto MDI/MDIX Auto MDI/MDIX MII/Reversed MII Interface Inter-Chip Expansion CPU Interface LEDs 10/100 PHY 10/100 PHY 10/100 PHY 10/100 PHY 10/100 PHY 10/100 PHY 10/100 PHY 10/100 PHY MAC MAC MAC MAC MAC MAC MAC MAC MIB Registers ARL Table Block Diagram |