BCM8706BIFBG

BCM8706 ® XAUI™ TO SERIAL 10G BASE-LRM TRANSCEIVER SUMMARY OF BENEFITS FEATURES • Meets and exceeds industry standard • IEEE 802.3ae • IEEE802.3aq • MDIO interface compliant to IEEE 802.3ae Clause 45 with extended indirect address register access • High-performance mode supports 300m of MMF fiber. • Single reference clock input, enables use of low-cost 25-MHz crystal or 156.25-MHz oscillator. • Low-power mode supports 220m of MMF, as specified in the 802.3aq standard. • Integrated micro-controller, no external memory required • Integrated AGC with a dynamic range of 60 mV–700 mV • Support for XENPAK/X2 3.0 and XPAK MSA Optical Module standards and the emerging SFP+ standard • Multiple interface support • 4 Lane XAUI™ (3.125 Gbps) • XFP/XFI • Programmable amplitude control on 10G serial transmitter • PMD - Serial 10.3125-Gbps CML • Simplifies manufacturability with integrated built-in self test (BIST) and loopback modes on the 10-G serial and XAUI interfaces. • Standard I2C serial interface support for external E2 and XFP. • XAUI link synchronization/deskew • Receive equalization on XAUI and 10G serial interfaces • XGXS 8B/10B error detection ENDEC • Power dissipation: < 1.5W (Low-power mode) • PCS 64B/66B scrambler/descrambler • Core Supply: 1.0V; I/O: 3.3V • Reference clock output for XFP module reference clock APPLICATIONS • Loss-of-signal detection • Link activity indicator outputs • XENPAK, X2 Modules for LRM • XAUI transmit pre-emphasis for transmission over backplanes • Direct attach to SFP+ modules • Network interface cards (NICs) BCM8706 Functional Block Diagram XAUI OTX RS Media Access Controller Interface XGXS 10.3125 Gbps BCM8706 MAC MMF EDC ORX REFCLK 25M or 156.25M MDC MDIO I 2C Optical PMD Management Interface E2 OVERVIEW Serializer 8B/10B Encoder CDR and Deserializer PDIP MMF EDC DSP Core AGC PDIN 10.3125 Gbps XDOP XDON 64/66B Synchronizer Descrambler Decoder Gearbox 8B/10B Encoder 3.125 Gbps Serializer Elastic FIFO XAOP XAON Randomizer BCM8706 322.26M 312.5M CMU 25 MHz, 156.25 MHz REFCLKP REFCLKN 8K ROM uC 8K RAM SPI 156.25M SPI RefClk Block 312.5M 312.5M MDIO MDC PRTAD[4:0] RSTB LASI Sync. Detect Lane Sync 8B/10B Decoder Lane Alignment FIFO 64/66B Synchronizer Descrambler Decoder Gearbox 3.125 Gbps DLL and De-serializer XDIP XDIN Sync. Detect Lane Sync 8B/10B Decoder 322.26M Elastic FIFO DLL and De-serializer XAIP XAIN Lane Alignment FIFO PDOP PDON CMUR and Serializer Management and Control Interface SDA SCL I2C Serial Interface JTAG XAUI BIST Generator PMD BIST Generator XAUI BIST Checker PMD BIST Checker PRBS Genertor and Checker Optics Control and Status OPRXLOS OPTMPFLT OPBIASFLT OPPWFLT OPTXENB OPRSTB BCM8706 Reference Design The BCM8706 incorporates a receive equalizer that supports Electronic Dispersion Compensation (EDC) over multimode fiber (MMF). The EDC equalizer is designed for applications over MMF covering distances up to 220m of OM1, OM2, OM3 fiber as per the IEEE standard. The BCM8706 will be fully compliant with the IEEE802.3aq standard. In enhanced performance mode, the BCM8706 is capable of supporting up to 300m over OM1, OM2, and OM3 fiber. PMD and XAUI clock recovery is performed on the device by synchronizing directly to the respective incoming data streams. An external 25-MHz or 156.25-MHz oscillator is required for the reference clock input. An onboard microcontroller implements the control algorithm for the MMF EDC DSP Core. The BCM8706 Ethernet LRM PHY is a fully integrated SerDes (10.3125 Gbps) interface device performing the extension functions for a 10-GbE Reconciliation Sublayer (RS) interface. The XGXS, PCS, and PMA functions include 8B/10B coding, 64B/66B coding, SerDes, Clock Multiplication Unit (CMU), and Clock and Data Recovery (CDR). On-chip clock synthesis is performed by the high-frequency low-jitter phase-locked loops for the PMD and XAUI output retimers. Individual The BCM8706 is available in a 13 mm × 13 mm, 256-pin FBGA, RoHS compliant package. Broadcom®, the pulse logo, Connecting everything®, and the Connecting everything logo 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. ® BROADCOM CORPORATION 16215 Alton Parkway, P.O. Box 57013 Irvine, California 92619-7013 © 2006 by BROADCOM CORPORATION. All rights reserved. 8706-PB00-R 05/16/06 Phone: 949-450-8700 Fax: 949-450-8710 E-mail: info@broadcom.com Web: www.broadcom.com