VSC8257
Overview
Quad Channel 1G/10GBASE-KR to SFI Ethernet WIS PHY with VeriTime™
VSC8257 is a quad 1G/10G serial-to-serial Ethernet PHY featuring VeriTime™, Microsemi’s IEEE 1588v2 network timing technology. It also supports dual-sided 10GBASE-KR functionality including auto-negotiation and training in a small form factor, low-power FCBGA ideal for a wide array of board-level signal integrity designs and system-level IEEE standard compliant Ethernet connectivity.
VeriTime™ is Microsemi’s patent-pending network timing technology that delivers the industry’s most accurate IEEE 1588v2 implementation. It is the only IEEE 1588v2 solution to be validated by major OEMs in real-world tests, and it has already been adopted as the preferred low-cost upgrade for meeting emerging requirements in 4G/LTE-Advanced (LTE-A). The VSC8257 device supports both 1-step and 2-step PTP frames for ordinary clock, boundary clock, and transparent clock modes of operation, along with complete Y.1731 OAM performance monitoring capabilities.
Target applications for the VSC8257 device include switching, IP edge router connectivity, rack mount server access through backplane, fiber and copper cable connectivity, and standalone server access (in LAN on motherboard designs or separate network adapters).
The device delivers excellent jitter attenuation with low power. It is also well-suited for SFP+ and QSFP+ based optical modules and direct attach copper cabling as well as challenging backplane interface applications.
Key Features
- Standards supported include IEEE 1588v2/Y.1731 OAM (4 ns), IEEE 802.3ae, IEEE 802.3ap, SFF-8431, ITU-T G.8261, and ITU-T G.8262
- Support for 10G LAN, 10G WAN, and 1G modes
- Support for SFP+/QSFP+ line modules and 10GBASE-KR backplanes between 1.25 Gbps and 10.3125 Gbps (including auto-negotiation and training)
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Ordering
| Distributor | SKU | Stock | MOQ | Pkg | |
|---|---|---|---|---|---|
| Microchip Technology Inc. | .. | .. | .. | .. | Buy Now |
| DigiKey | VSC8257YMR-01-ND | 90 | 1 | Tray | Buy Now |
| Future Electronics | 9125921 | 90 | Tray | No Stock | |
| Mouser | 494-VSC8257YMR-01 | 90 | 1 | Tray | Buy Now |
| Richardson RFPD | VSC8257YMR-01 | 90 | .. | No Stock |
