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ETHERNET PRODUCTS
VSC8486
10 Gbps XAUI or XGMII to XFI LAN/WAN Transceiver
BLOCK DIAGRAM:
32 x 311 Mbps XGMII LAN Mode: 1 x 10.3125 Gbps WAN Mode: 1 x 9.9533 Gbps 4 x 3.125 Gbps XGXS Decode X AU I PCS / ePCS Encode eWIS Generator PMA MUX XFI/SFI PMA DMUX eWIS Monitor XGMII 32 x 311 Mbps
VSC8486
XGXS Encode
PCS / ePCS Decode
LOW POWER: Exceptionally low power (700 mW LAN mode or 750 mW WAN mode) allows for higher port densities W I D E R A N G E O F S U P P O R T: Fully compatible with IEEE 802.3ae and T11 10 GFC Extended-WIS (E-WIS) provides full Clause 50 support and enables transport over existing SONET networks 10 Gbps serial interface exceeds all SONET and 10 GbE requirements 4 x 3.125 Gbps and 3.182 Gbps XAUI I/O enable interconnection with a wide range of Layer-2 devices Seamless connectivity to XFP and SFP+ modules 10 Gbps receiver exceeds all 10 GbE stressed eye requirements TOOLS FOR RAPID DESIGN: Multiple loopback modes and built-in self test (BIST) capabilities reduce system development costs, enable manufacturing tests, and improve time to market JTAG access port facilitates boundary scan for in-circuit test to improve board yield Single 1.2 voltage for the whole chip with optional power supply range (1.2 V, 1.8 V, and 3.3 V) for the TTL interface F L E X I B I L I T Y: XAUI I/O programmability for lane swap, invert, amplitude, pre-emphasis, and equalization KX4-compatible 3 Gbps I/O for long-reach copper interconnect provides additional margin to traverse connectors and the backplane up to 40 inches Extended-PCS (E-PCS) mode with forward error correction (FEC) auto-negotiation allows extended reach over single-mode and multimode fiber with 10-15 error floor Enhanced de-emphasis and equalization compensates for connector and channel losses and makes the device SFP+ compatible Accessibility of the recovered clock from high speed input and separate clock paths for CMU and CRU enable Layer 1 support for Synchronous Ethernet XGMII interface enables the device to be used in a roll-over redundant link application to provide fault tolerance
A P P L I C AT I O N S : 10 Gbps Ethernet LAN/WAN switches, routers, and router to WAN interconnects 10 Gbps Ethernet network interface cards 10 Gbps Fibre Channel host bus adapters and switches
S P E C I F I C AT I O N S : Total power: 750 mW Supply voltage: 1.2 V
VPPD-01396 Revision 1.1
VSC8486
10 Gbps XAUI or XGMII to XFI LAN/WAN Transceiver
GENERAL DESCRIPTION: The VSC8486 is a LAN/WAN XAUI or XGMII transceiver that converts 3 Gbps XAUI data to a 10 Gbps serial stream. At just 750 mW, the VSC8486 is ideal for applications requiring low power. The VSC8486 device is also equipped with an additional full-rate data port that can be utilized for bypass monitoring or channel monitoring applications. The device meets all specifications for 10 Gigabit Ethernet (GbE) Layer-1 processing, as defined in IEEE 802.3ae. The VSC8486 offers exceptional 10 Gbps mixed-signal performance with a data output that features programmable pre-emphasis to enable longer traces of copper. The VSC8486 high-speed serial I/O supports 9.9 Gbps, 10.3 Gbps, and 10.5 Gbps, as defined by IEEE 802.3ae and T11 10 GFC, and is fully compliant with the SONET jitter specification defined by Bellcore GR253. There are four main data processing blocks in the device: XGXS, PCS, WIS, and PMA. The 10 GbE extender sublayer (XGXS) accepts 8b/10b data running at 3.125 Gbps and decodes it for transmission to the physical coding sublayer (PCS). The XGXS is capable of deskewing more than 60 bit times between lanes. The PCS receives data from the XGXS at 10 Gbps and encodes data according to the 64b/66b algorithm described in IEEE 802.3ae clause 49. The PCS features an optional extended mode (E-PCS) that also runs at the 64b/66b rate. This extended mode uses an alternative framing algorithm that adds forward error correction (FEC) to provide ~2.5 dB of net electrical coding gain. The E-PCS is available for LAN mode but not WAN mode. The PCS outputs data to the WAN interface sublayer (WIS). (This mode is bypassed in LAN mode.) The WIS optionally takes data from the PCS at 9.953 Gbps and frames data in a SONET STS-192c frame, as described in IEEE 802.3ae clause 50. Additionally, the WIS block contains extended SONET and SDH processing capabilities that allow system operators to leverage valuable performance monitoring data. Finally, data is delivered to the physical media attachment (PMA) block. The PMA multiplexes the internal parallel data bus into a 10 Gbps data stream. The 10 Gbps to XAUI data channel performs the operations described above in reverse. Notable features in this path are a SONET-compliant LOS detector and a 10 Gbps receiver that is fully compliant with XFI specifications, including stressed eye criteria. The device operates using a 1.2 V supply dissipating only 700 mW in LAN mode and 750 mW in WAN mode. The VSC8486 is available in standard and lead(Pb)-free (second-level interconnect only) packages, measuring 17 mm x 17 mm with 256 pins and 1.0 mm pin pitch.
A P P L I C AT I O N D I A G R A M : T R A F F I C - S H A P I N G / S E C U R I T Y A P P L I A N C E
XFP VSC7978 TIA VSC7980 VCSEL Driver VSC8239 Dual CDR VSC8486
LAN
XAUI
XFP VSC7978 TIA VSC7982 EML Driver VSC8239 Dual CDR
Bypass (XGMII)
ASIC
WAN
VSC8486 XAUI
A P P L I C AT I O N D I A G R A M : 1 0 G I G A B I T E T H E R N E T O V E R S O N E T L I N E C A R D
XFP VSC7978 TIA VSC7980 VCSEL Driver VSC8239 Dual CDR VSC8486 LAN/WAN PHY XAUI Meigs IIe VSC7323 MAC SPI-4
LAN
VSC9138 EoS VCAT/LCAS GFP TFI-5
Switch Card
Trademarks TM Vitesse, ASIC-Friendly, FibreTimer, TimeStream, Snoop Loop, Super FEC, FOCUSConnect, Meigs-II, Meigs-IIe, Lansing, Campbell-I, Barrington, PaceMaker, HOVCAT48, HOVCAT48e, HOVCAT192, HOVCAT192e, Micro PHY, FOCUS32, FOCUS16, IQ2200, NexSAS, VersaCAT, GigaStream, HawX, SparX, StaX, VstaX, SimpliPHY,VeriPHY, ActiPHY, XFP PRO, SFP PRO, Smart-LINK, OctalMAC, EQ Technology are trademarks in the United States and/or other jurisdictions of Vitesse Semiconductor Corporation. All other trademarks or registered trademarks mentioned herein are the property of their respective holders. Copyright (c) 2006-2007 Vitesse Semiconductor Corporation ("Vitesse") retains the right to make changes to its products or specifications to improve performance, reliability or manufacturability. All information in this document, including descriptions of features, functions, performance, technical specifications and availability, is subject to change without notice at any time. While the information furnished herein is held to be accurate and reliable, no responsibility will be assumed by Vitesse for its use. Furthermore, the information contained herein does not convey to the purchaser of microelectronic devices any license under the patent right of any manufacturer.
741 Calle Plano Camarillo, CA 93012, USA Tel: +1 805.388.3700 Fax: +1 805.987.5896 www.vitesse.com sales@vitesse.com

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