BCM54380C1KFBG

BCM5338MKQMG is a sixth-generation switch chip that builds upon the proven success of its predecessors, such as the BCM5328 and BCM5328M. This device combines all the functionalities of a high-speed switch system into a single, compact package. It includes packet buffers, PHY transceivers, MACs (Media Access Controllers), address management, and a non-blocking switch fabric, all integrated into a 0.18-micron CMOS device.

Key features of BCM5338MKQMG include:

1. Compliance with Standards: The chip complies with IEEE 802.3, IEEE 802.3u, and IEEE 802.3x specifications, ensuring compatibility with all industry-standard Ethernet and Fast Ethernet devices. This includes support for MAC control PAUSE frames and auto-negotiation subsections.
2. High-Speed Transceivers: BCM5338MKQMG contains eight full-duplex 10BASE-T/100BASE-TX Fast Ethernet transceivers. Each transceiver performs all 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 functions on Category 5 UTP cable.
3. Advanced Management Functions: In addition to robust 10/100 Ethernet DigiPHY™ and MIBAutocast™ functions, BCM5338MKQMG offers a rich feature set suitable for voice over IP, video, and data traffic for multimedia applications. It supports four-level priority queues mapped to IEEE 802.1p, Diffserv, ToS, and CoS, as well as 512-entry IEEE 802.1Q VLAN and IEEE 802.1xEAPOL.
4. Protocol Filtering and Security: The chip provides protocol filtering, MAC-based trunking with link failover, per-port bandwidth/rate control, MAC address locking, IGMP snooping at layers 2/3, and port protection functions. These features allow system vendors to build advanced L2+ switch systems for the multi-tenant/multi-dweller unit (MDU/MTU) markets.
5. MIBAutocast™ Function: The proprietary MIBAutocast™ function encapsulates the on-chip MIB statistics and sends them out automatically on a predefined port (or ports) at programmed intervals. This function requires only a small, low-cost microcontroller to initialize and configure the device.
6. Management and Monitoring: BCM5338MKQMG provides an off-chip MIB statistics register to collect, receive, and transmit statistics for each port. It also offers 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.

In summary, BCM5338MKQMG is a highly integrated, feature-rich switch chip designed for advanced networking applications. Its compliance with industry standards, high-speed transceivers, advanced management functions, protocol filtering and security features, MIBAutocast™ function, and management and monitoring capabilities make it an ideal choice for system vendors building advanced L2+ switch systems.