Broadcom BCM5325EIQMG

The BCM5325E is a six-port 10/100BASE-T/TX integrated switch targeted at cost-sensitive Fast Ethernet managed switch systems. The device contains five fullduplex 10BASE-T/100BASE-TX Fast Ethernet transceivers, each of which performs all of the physical layer interface functions for 10BASE-T Ethernet on CAT 3, 4, or 5 unshielded twisted-pair (UTP) cable and 100BASE-TX Fast Ethernet on CAT 5 UTP cable. 100BASE-EFX is supported through the use of external fiber optic transceivers. The BCM5325E device provides a very highly integrated solution. It combines all of the functions of a high-speed switch system, including packet buffer, transceivers, media access controllers (MACs), address management and a non-blocking switch controller, into a single monolithic 0.18–μm CMOS device. It complies with the IEEE 802.3, 802.3u, and 802.3x specifications, including the MAC control Pause frame and auto-negotiation subsections, providing compatibility with all industrystandard Ethernet and Fast Ethernet devices. This function requires only a small low-cost microcontroller to initialize and configure the device.

• Six-port, 10/100 Mbps integrated switch controller— fully non-blocking configuration
• Five integrated 10/100BASE-T/TX/EFX IEEE 802.3u compliant transceivers.
• Integrated full-duplex capable IEEE 802.3x-compliant MACs
• 64 KB on-chip packet buffer
• Media Independent Interface (MII) provided for an additional TX/FX uplink to PHY or MAC.
• Integrated address management—supports up to 1K unicast addresses
• Port mirroring and Layer-3 IGMP snooping
• IEEE 802.1p QoS packet classification with four priority queues and DiffServ DSCP priorities in IPv4 and IPv6
• 16 entries IEEE 802.1q-based and Port-based VLAN
• Supports IEEE 802.1x EAPOL higher layer protocol
• EEPROM (93C46) allows further un-managed capabilities
• 25-MHz crystal or oscillator
• Low-power 3.3/1.8V, 0.18 μm CMOS technology
• HP auto-MDIX function hardware selectable
• 128-pin MQFP package. Ingress/egress rate control
• Pin compatible with BCM5325
• Protected port capability
• DTE/DPM power over Ethernet detection