This verified reference design is a signal conditioning solution for front-port QSFP+ supporting two 40GbE ports compatible with 40G-CR4/SR4/LR4 and 10G SFF-8431 requirements. The design is applicable to optical and passive/active copper cables. It allows for reach extension between the Switch ASIC and the front-port QSFP+ which is often required for the outermost ports of a Top-of-Rack (ToR) switch or for add-in mezzanine implementations of QSFP+ line cards.
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
Download ready-to-use system files to speed your design process.
Detailed schematic diagram for design layout and components
Detailed schematic diagram for design layout and components
Complete listing of design components, reference designators, and manufacturers/part numbers
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | User guide | TIDA-00417 DS125B 40GbE/10GbE QSFP Reference Design User's Guide (Rev. A) | May 04, 2015 | |
| Technical article | Differential pairs: four things you need to know about vias | PDF | HTML | Jun. 10, 2015 | |
| Application note | DS125BR820 Linear Repeater Used in 40GbE nPPI / SFF-8431 Applications | Aug. 09, 2014 |
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