BCM8752 Brief ® DUAL-CHANNEL 10 GBE SFI-TO-XFI PHY WITH EDC SUMMARY OF BENEFITS FEATURES • Dual-channel SFI-to-XFI Physical Layer (PHY) developed in • Single-reference clock input, enables use of a low-cost 156.25 low-power 65 nm CMOS process technology MHz oscillator • Supports SFP+ SR, LR, and LRM optical interfaces • 1 GbE mode, with support for IEEE 802.3™ Clause 37 AN • Supports SFP+ copper twin-ax cable • Transmit preemphasis for flexible placement of PHY • Programmable amplitude control on 10G serial transmitter • Link Alarm Status Interrupt (LASI) output for both channels interface • Advanced diagnostics on SFP+ interface, including eye- • MDIO interface-compliant with IEEE 802.3ae Clause 45 with mapping, SNR, and BER extended indirect address register access • Standard two-wire serial interface (BSC) support for external • Support for XFP/XFI interfaces E2, XFP, SFP, SFP+ • SFI and XFI interface: Serial 10.3125 Gbps CML • PCS 64B/66B scrambler/descrambler • SFI receive equalization APPLICATIONS • Integrated microcontroller and AGC with a wide dynamic range • High-density 10 GbE SFP+ line cards • Loopback modes supporting IEEE standard modes • SFP+ optical SR, LR, and LRM modules • Built-In Self-Test (BIST) on SFI and XFI serial interfaces • SFP+ copper twin-ax • Low-power dissipation: 1W/10 GbE port • Core supply—1.0V, I/O—3.3V • 12 mm x 12 mm BGA package, 1-mm ball pitch BCM8752 Functional Block Diagram BCM8752 10.3125 Gbps XFI Interface 1 XFI MDC Management Interface 10.3125 Gbps SFI 2 SFP+ 10.3125 Gbps PCS/PMA XFI Interface 2 MAC/ Switch SFP+ LRM EDC RS XFI 10.3125 Gbps SFI 1 MDIO LRM EDC 64/66B Encoder Scrambler 64/66B Synchronizer Descrambler Decoder CDR, MMF EDC DSP Core 322.26 MHz Deser ializer AGC SFI_IP SFI_IN 10.3125 Gbps M U X Gearbox CMU and Serializer Elastic FIFO XFI_OP XFI_ON Gearbox 10.3125 Gbps OVERVIEW 322.26 MHz 312.5 MHz 312.5 MHz 156.25 MHz 125 MHz Elastic FIFO 312.5 MHz CL36 TX PCS CL36 RX PCS 32K ROM 125 MHz 125 MHz 125 MHz uC MDIO 16K RAM Serial 26 MHz REFCLKP RefClk Block REFCLKN 156.25 MHz 156.25 MHz CL37 Auto Neg Force 10G/1G Select 125 MHz CL36 RX PCS Elastic FIFO 156.25 MHz 125 MHz CL36 TX PCS 125 MHz 125 MHz 312.5 MHz MDIO MDC PRTAD[4:1] RESET_L LASI_ Management and Control Interface Shown with only one channel; the other channel is identical. JTAG SFI_OP M U X XFI BIST Generator PMD BIST Generator XFI BIST Checker PMD BIST Checker PRBS Generator and Checker CMU and Serializer SFI_ON Optics Control and Status 10.3125 Gbps 322.26 MHz 64/66B Encoder Scrambler Gearbox XFI_IN 64/66B Synchronizer Descrambler Decoder Elastic FIFO CDR and Deserializer XFI_IP Gearbox 10.3125 Gbps 312.5 MHz 322.26 MHz OPRXLOS BCM8752 Block Diagram The BCM8752 is a dual-channel 10 GbE SFI-to-XFI (10-Gigabit serial electrical interface) PHY that incorporates an Electronic Dispersion Compensation (EDC) equalizer supporting SFP+ line-card applications. The BCM8752 is a multirate PHY targeted for optical fiber and copper twin-ax applications. It interfaces with both limiting- and linear-based SFP+ and SFP modules, and SFP+ copper twin-ax cable. The BCM8752 is fully compliant with the 10 GbE SFP+ standard and also supports 1000BASE-X for 1 GbE operation. The BCM8752 is developed using an all-DSP high-speed front end, providing the highest performance and most flexibility for line-card designers. An on-chip microcontroller implements the control algorithm for the DSP core. On-chip clock synthesis is performed by the high-frequency, low-jitter, Phase-Locked Loops (PLLs). Individual clock recovery is performed on the device by synchronizing directly to the respective incoming data streams. A single 156.25 MHz reference clock input is required for the device. The BCM8752 Ethernet PHY is a fully integrated 10-Gigabit serial Ethernet retimer interface. The SFI, XFI, PCS, and PMA functions include 64B/66B coding, Clock Multiplication Unit (CMU), and Clock and Data Recovery (CDR). The BCM8752 is available in a 12 mm x 12 mm, 1 mm pitch, 121-pin BGA, 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 5300 California Avenue Irvine, California 92617 © 2009 by BROADCOM CORPORATION. All rights reserved. 8752-PB00-R 09/24/09 Phone: 949-926-5000 Fax: 949-926-5203 E-mail: [email protected] Web: www.broadcom.com