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with mission-critical equipment or applications. Any performance specifi cations are believed to be reliable but are not verifi ed, and Buyer must conduct and complete all performance and other testing of the products, alone
and together with, or installed in, any end-products. Buyer shall not rely on any data and performance specifi cations or parameters provided by Microsemi. It is the Buyer’s responsibility to independently determine suitability
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Switch Module
Dual
10 GbE
MAC/NIC
10 GbE Line Card or NIC
VSC8490
10GBASE-KR
Backplane
2 × 10G
2 × 1G
RXAUI/XAUI
10 GbE
RXAUI/
XAUI
Switch
Module
Module
2/4
2/4 2 × 10G/
2 × 1G
RXAUI/
XAUI
2/4
2/4
VSC8490
Highlights
• IEEE 1588v2 compliant
• 128/256-bit MACsec support
• RXAUI/XAUI support
• SFP+ I/O with KR support
• 1 GbE support
Applications
• Multiple-port RXAUI/XAUI to SFI/ SFP+ line
cards or NICs
• 10GBASE-KR compliant backplane
transceivers
• Carrier Ethernet networks requiring
IEEE1588v2 timing
• Secure data center-to-data center
interconnects
• 10 GbE switch cards, router cards, and
NICs
Microsemi's dual 10G/1G SerDes PHY provides MACsec, IEEE 1588v2,
and hardware-based KR support for timing-critical applications,
including all industry-standard protocol encapsulations.
The full dual-channel VSC8490 device offers a seamless integration
between IEEE 1588v2 and the MACsec engine with no loss of precision.
VeriTime™ is Microsemi's patent-pending timing technology
that delivers the industry’s most accurate IEEE 1588v2 timing
implementation. IEEE 1588v2 timing integrated in the PHY is the
quickest, lowest cost method of implementing the timing accuracy that
is critical to maintaining existing timing-critical capabilities during the
migration from TDM to packet-based architectures.
The VSC8490 device supports 1-step and 2-step PTP frames for
ordinary clock, boundary clock, and transparent clock applications,
along with complete Y.1731 OAM performance monitoring capabilities.
MACsec (IEEE 802.1AE) defi nes a set of protocols to meet the security
requirements for protecting data traversing Ethernet LANs, such as
input classifi cation, frame encryption/decryption, and performance and
latency monitoring.
The VSC8490 device meets the SFP+ SR/LR/ER/ZR/220MMF host
requirements in accordance with the SFF-8431 specifi cations. It also
compensates for optical impairments in SFP+ applications, along with
degradations of the PCB.
The VSC8490 device provides full KR support, including KR state
machine, for autonegotiation and link optimization. The transmit
path incorporates a multitap output driver to provide fl exibility to
meet the demanding 10GBASE-KR (IEEE 802.3ap) Tx output launch
requirements.
A complete suite of BIST functionality includes line and client loopbacks
along with pattern generation and error detection. Highly fl exible
clocking options support LAN and WAN operation using single
156.25MHz reference clock rate inputs for seamless Synchronous
Ethernet support. The VSC8490 device includes a failover switching
capability for protection routing, along with selectable lane ordering.
VSC8490
Dual Channel WAN/LAN/Backplane RXAUI/XAUI to SFP+/KR 10 GbE SerDes PHY with VeriTime™ and MACsec