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VSC8256

4 Port 10Gbps SFI to XFI Repeater

Status: In Production

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Device Overview

Summary

VSC8256 is a quad 1G/10G serial-to-serial, protocol-agnostic repeater/retimer that integrates hardware-based host-side only 10GBASE-KR auto-negotiation and training in a small form factor, low-power FCBGA ideal for a wide array of board-level signal integrity applications. The quad channel VSC8256 device operates as a 10 GbE LAN, 10G WAN, 40 GbE (4 x 10G), as well as 1G legacy KR repeater with integrated cross-point switching enabling configurable line ordering for protection and broadcasting flexibility. Target applications for the VSC8256 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 VSC8256 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. Its highly flexible clocking options support LAN and WAN operation using a single 156.25 MHz reference clock rate. Support for Synchronous Ethernet (SyncE) is also included.

Additional Features
    • Standards supported include IEEE 802.3ae, IEEE 802.3ap, SFF-8431, ITU-T G.8261, and ITU-T G.8262
    • Data rates supported include 10.3125 Gbps LAN mode, 9.95328 Gbps WAN mode, and 1.25 Gbps mode
    • Signal conditioner mode supports protocol agnostic data rates
    • Support for SFP+/QSFP+ line modules and 10GBASE-KR backplanes between 1.25 Gbps and 10.3125 Gbps (including host-side auto-negotiation and training)
    • Multi-port serial-to-serial signal conditioning
    • 10GBASE-KR-compliant backplane transceivers
    • Multi-port XFI/KR to SFI/SFP+ 10 GbE switch cards, router cards, and network adapters
    • Compliant with IEEE 802.3-2012 and SFF-8431 electrical (SFI) specifications
    • 9.95 Gbps WAN and 10.3 Gbps LAN operation, as well as 1.25 Gbps Ethernet support
    • Standard SFP+ and QSFP+ applications
    • 10GBASE-KR (IEEE 802.3-2012) for 10G backplanes, including 1.25 Gbps and 10.3 Gbps auto-negotiation (host-side)
    • Adaptive equalization receiver and programmable multi-tap transmitter pre-emphasis
    • SPI, MDIO, and two-wire serial slave management interfaces
    • 950 mW, typical, for each bidirectional channel
    • 1.2 V and 1.0 V core power supplies (2.5 V TTL supply)
Parametrics
Name
Value
Ethernet Bandwidth
10Gbps
LEDs
4
# of Ethernet Ports
4
Interface
XFI/SFI/KR
Temp. Range Min. (°C)
-40
Temp. Range Max. (°C)
110
Wake-on-LAN
No
Automotive
No
Interface1
XFI/SFI
Fiber Support
Yes
SyncE
Yes
MAC I/O Voltage
1 (differential)
Cable Diagnostics
Yes

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
VSC8256YMR-01
2.045200
3.444444
256
HFCBGA
17x17mm
SAC305
e1
VSC8256YMR
2.045200
3.444444
256
HFCBGA
17x17mm
SAC305
e1
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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