Broadcom BCM5488SA7KPBG

The BCM5488S consists of eight complete 10/100/1000BASE-T Gigabit Ethernet transceivers integrated on a single monolithic CMOS chip. The BCM5488S is optimized for low power and small footprint size to enable high-port density applications. By lowering system cost and reducing power dissipation by nearly 30 percent, the BCM5488S enables a new class of cost-effective Gigabit Ethernet equipment, driving the delivery of Gigabit Ethernet bandwidth to the desktop. The BCM5488S DSP-based architecture and advanced power management techniques combine to achieve robust and low-power operation over existing Category 5 twisted-pair wiring. The BCM5488S architecture not only meets the requirements of IEEE 802.3, IEEE 802.3u, and IEEE 802.3ab but also maintains the industry's highest level of margin over IEEE requirements for echo, near-end crosstalk (NEXT), and far-end crosstalk (FEXT). Low power is the key to implementing high-density Gigabit Ethernet switches, and the BCM5488S has the lowest power in the industry at less than 625 mW per port. In addition, the BCM5488S has extremely low EMI emissions, which reduces the design constraints required to meet EMI radiation specifications. The BCM5488S supports the SGMII and SerDes MAC interfaces. The SGMII and serial SerDes interfaces are reduced pin-count (6 and 4, respectively, versus 25) versions of the GMII. These reduced pin-count interfaces simplify design and lower system cost by reducing the number of layers required to route high density solutions. In addition, these interfaces allow fewer pins at the MAC/switch, which reduces the MAC/ switch cost by enabling smaller die sizes than would be possible with full GMII. Each BCM5488S port is fully independent and has individual interface, control, and status registers, and incorporates a number of advanced features. A link-quality indicator LED gives installers an instant visual indication if there are any problems with the wiring plant supporting operation at the preferred speed. This includes physical wiring defects that the BCM5488S cannot automatically correct for and channel conditions such as excessive cable length and return loss, crosstalk, echo, and noise. Broadcom's CableChecker software can be used with the device to provide remote management of the cable and a first level of diagnostics and fault isolation. The BCM5488S has the industry's highest tolerance to electrostatic discharge (ESD). This prevents ESD damage not only during manufacturing but also during CESD events in the field. CESD is an ESD event that occurs when an electrically charged network cable is plugged into a network port. This is an issue that has become more prevalent with contemporary cable installations, and the BCM5488S can tolerate well over 3 kV of CESD.

• Eight fully-integrated 10BASE-T/100BASE-TX/1000BASE-T Gigabit Ethernet transceivers
• SGMII and SerDes MAC interface options
• Ethernet WirespeedTM and super isolate mode support
• Fully compliant with IEEE 802.3, IEEE 802.3u, and IEEE 802.3ab standards
• 0.13-micron CMOs--low power and cost
• Supports line side copper or 100BASE-FX fiber mode
• Low power <625 mW per port
• Advanced power management
• Trace-matched output impedance
• Line-side loopback
• Low EMI emissions
• CableCheckerTM diagnostics
• CableChecker detection of cable plant impairments
• Link quality indication LED
• Automatic detection and correction of wiring pair swaps, pair skew, and pair polarity
• Automatic MDI/MDIX crossover at all speeds
• Robust cable-sourced electrostatic discharge (CESD) tolerance
• Support for jumbo packets up to 10 KB
• IEEE 1149.1 (JTAG) and 1149.6 (AC-JTAG) boundary scan
• Package: 484-nin PRGA