BCM84844A1KFSBG

Broadcom B CM 8 48 4 4 Q u ad 10 GBAS E- T Trans ce i ve r FOUR-PORT 10GBASE-T TRANSCEIVER Overview Highlights • The BCM84844 offers low power in a second-generation 40 nm 10GBASE-T device which is pin compatible with the earlier BCM84834 device. • Energy Efficient Ethernet™ (EEE) is now delivered on all network speeds: 10GBASE-T, 1000BASET, and 100BASE-TX. EEE provides significant power reduction, and AutogrEEEn® enables EEE with legacy MACs. • Quad 10GBASE-T PHYs are ideal for 48-port, top of rack (ToR) switches, and 4x 10GbE adapters. • Simplified system design with only two power supplies and no external MDI components. • Broadcom-enhanced cable diagnostics estimates cable length and detects cable or termination anomalies. • 1588 Precision Time Protocol (PTP) provides precise and accurate synchronization of nodes in the network. Features The Broadcom® BCM84844 is a complete quad 100BASE-TX, 1000BASE-T and 10GBASE-T solution operating at 100m over CAT6a UTP cable. The BCM84844 is pin-compatible with the earlier BCM84834 device, offering lower power while adding Energy Efficient Ethernet (EEE) for 1000BASE-T and 100BASE-TX, in addition to 10GBASE-T. Optional Adaptive Voltage Scaling (AVS) delivers a low power solution while enabling a low cost implementation. The BCM84844 is based on a highly advanced digital signal processor architecture to enable robust operations over worst case UTP cables. Summary of Benefits • Robust operation over 100m Cat6a cables with industry-standard 4-pair magnetics. • Auto-negotiation lowers system administration cost. • EEE on GbE delivers lower power for legacy interconnections. • IEEE standard device interoperability: 100 Mbps, 1000 Mbps, and 10 Gbps. • Cuts design constraints to meet EMI standards. • Cable diagnostics identifies cable plant condition to immediately trace cabling issues. • 1588v2 with one-step timestamp insertion provides high accuracy timing. • 802.1ae MACsec provides link layer security. • Highly integrated four-port 10GBASE-T Ethernet transceiver. • Supports multiple speeds: 10GBASE-T as well as 100BASE-TX and 1000BASE-T. • XFI and SGMII MAC interface options. • Compliant with IEEE 802.3™, IEEE 802.3an, IEEE 802.3ab, IEEE 802.3u, and IEEE 802.3az standards. • AutogrEEEn technology permits legacy MACs to receive the power savings of EEE in periods of reduced link utilization. • Reduced number of power supplies with standard voltages: 1.0V and 2.5V. • AVS for the creation of a local DVdd supply from a 2.5V or 3.3V global supply. • Synchronous Ethernet (SyncE) support. • Cable plant diagnostics. • IEEE standard 1588-2008 (version 2) support. • Detection and correction of pair swaps (MDI crossover), pair skew, and pair polarity. • Support for jumbo packets up to 18 KB. • Super-Isolate mode to completely disable a selected port. • IEEE 1149.1 (JTAG) boundary scan. • Extensive selection of both line and network side loopbacks. • 676-pin FBGA 27 mm x 27 mm package. XFI • 802.1ae MACsec Security. MDI Transformer RJ-45 MDI Transformer RJ-45 MDI Transformer RJ-45 MDI Transformer RJ-45 BCM84844 Service Provider XFI MAC Controller or Switch OTN/PTN Data Centers XFI BCM84844 Enterprise XFI Supported Best Choice BCM84844 [Port 1] BCM84844 [Port 2] BCM84844 [Port 3] SYNC_IN0 IEEE 1588/SyncE SYNC_IN1_OUT INTERR_MLC RD[1] + XFI Frame Frame Scramble Scramble LDPC LDPC Encode Encode 4D 4DDSQ DSQ 128 Map 4D Pre-H Decode Decode 4D DAC TD[1] + XAUI ™ /SGMII /SGMII XFI SGMII MAC interface MAC Interface Deframe Deframe and and Descramble LDPC LDPC Decode Decode 4D 4DDSQ DSQ 128 128Soft Soft Decisions Decisions Matrix Matrix Xtalk Xtalk Canceler Canceller and and Equalizer Equalizer 4D Clock Recovery TRD[1][0:3] 4D ADC BCM84844 [Port 4] MDC MDIO MDIO MDIO Management Interface Interface LED LED Controller Controller MII Registers 10 LEDs SI SCK CSb Clock Clock Generator Generator SPI SO + XTALN + XTALP Shared Functions BCM84844 Block Diagram for Each Port The BCM84844 quad-port PHY enables customers to design high-density ToR switches, modular line cards, and 4x 10GbE server adapters. The BCM84844 is a second-generation 40 nm device that adds important features such as EEE, on 1000BASE-T and AVS, which can reduce implementation cost and power. The MAC interface for the BCM84844 is a high-performance XFI I/O, which is able to support virtually all switch/PHY connections for ToR switches. Support for EEE is provided both through LPI commands over the XFI interface and via Broadcom's AutogrEEEn feature. EEE is supported for all three speeds: 10GBASET, 1000BASE-T, and 100BASE-TX. Support for 1588v2 in the BCM84844 is part of Broadcom's broad offering of PTP devices. The IEEE 802.1ae MACsec Ordering Information implementation is part of Broadcom's broad offering of security devices. The BCM984844_EVAL is available and provides a reference design platform suitable for evaluation of the device. A design guide is provided as part of the device support information. Contact your Broadcom sales representative for information. Part Number 676-pin FBGA (RoHS-compliant) BCM84844A0KKFSBG About Broadcom Broadcom Corporation (NASDAQ: BRCM), a FORTUNE 500® company, is a global leader and innovator in semiconductor solutions for wired and wireless communications. Broadcom® products seamlessly deliver voice, video, data, and multimedia connectivity in the home, office, and mobile environments. With the industry's broadest portfolio of state-of-the-art system-on-a-chip and embedded software solutions, Broadcom is changing the world by Connecting everything®. For more information, go to www.broadcom.com. Broadcom, the pulse logo, Connecting everything, and the Connecting everything logo, and AutogrEEEn® 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. April 16, 2012 • 84844-PB01-R