32 × 311 Mbps
XGMII
4 × 3.125 Gbps
XGXS
Decode
X AU I
PCS / ePCS
Encode
eWIS
Generator
VSC8486
XGXS
Encode
PCS / ePCS
Decode
eWIS
Monitor
XGMII
32 × 311 Mbps
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
and router to WAN intercon
10 Gbps Ethernet network i
10 Gbps Fibre Channel hos
switches
S P E C I F I C AT I O N S :
Total power: 750 mW
Supply voltage: 1.2 V
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.
VSC8486
WAN mode.
The PCS outputs data to the WAN interface subl
bypassed in LAN mode.) The WIS optionally tak
9.953 Gbps and frames data in a SONET STS-
in IEEE 802.3ae clause 50. Additionally, the WIS
SONET and SDH processing capabilities that a
leverage valuable performance monitoring data.
to the physical media attachment (PMA) block.
internal parallel data bus into a 10 Gbps data stre
The 10 Gbps to XAUI data channel performs
above in reverse. Notable features in this path
LOS detector and a 10 Gbps receiver that is
specifications, including stressed eye criteria.
The device operates using a 1.2 V supply dissipa
mode and 750 mW in WAN mode. The VSC848
and lead(Pb)-free (second-level interconnect on
17 mm × 17 mm with 256 pins and 1.0 mm pin pi
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
Swi
Ca
Trademarks
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 © 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.
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