Pc ie extender customer presentation sept 2012

3M Electronic Solutions Division

© 2012 3M. All Rights Reserved. www.3Mconnectors.com

3M™ Twin Axial Cable Assembly for PCI Express Extender Card Applications

2© 2012 3M. All Rights Reserved. www.3Mconnectors.com

Food Safety Division3M Electronic Solutions Division

Risers Cards and Extender Cables Sometimes system mechanical configurations force add-

in cards to be mounted in a different location Riser cards and extender cables help with that One PCI Express slot can also manage multiple PCI

Express cards



Internal 3M™ Cable Assemblies for PCI Express Applications with Flat Ribbon 3M™ Twin Axial Cable

• Supports Gen 1 - Gen 3 PCIe• 85 ohm construction• Target performance to support

PCIe Gen 4• Space-saving, high-density design• Folded 3D assemblies for advanced

packaging - custom• Potential cost savings via FR4 and

re-driver elimination• Other similar applications possible



3M™ Twin Axial Cable Assembly for PCI Express Extender Card Applications

X4

X8 X16



Available Options Six standard parts

Other lengths available Shortest possible length: 120 mm Longest length: Undetermined – depends on application

X4 .25m 8KJ1-0727-0250X4 .5m 8KJ1-0727-0500x8 .25m 8KH2-0723-0250x8 .5m 8KH2-0723-0500x16 .25m 8KC3-0726-0250x16 .5m 8KC3-0726-0500



Signal Integrity We have a full SI report on .25, .5 and 1 m assemblies Everything in signal path consumes budget

― PCB trace, connectors, cable

― The more PCB trace used, the less budget for cable length

― Every system is different

3M has generated a loss function to determine attenuation at given length and frequency― Determine channel loss budget

― Determine cable length

― Calculate cable estimated loss

― Figure into budget



Loss Function

Data for 0.25 m through 1 m is average measured data at each length Data beyond 1 m length is projected with loss function generated from 0.25 m to 1 m

data:― IL (dB) = (a0 + a1*length)*f2 + (b0 + b1*length)*f + (c0 + c1*length)― Where:

PCIe Differential IL

-40

-35

-30

-25

-20

-15

-10

-5

0

0 1 2 3 4 5 6 7 8

Frequency (GHz)

Dif

fere

nti

al IL

(d

B)

0.25 m

0.5 m

1 m

2 m (Projected)

3 m (Projected)

a0 = -0.1106 b0 = 0.0495 c0 = -1.2781

a1 = -0.0176 b1 = -1.0963 c1 = -0.1854



3M™ Twin Axial Cable Assembly for PCI Express Extender Card Applications to rotated I/O card to fit in 1U (1.75 inch) box

PCI Express Extender to SAS controller card Cables optimized to minimize obstruction to airflow

3M™ Twin Axial Cable Assembly for PCI Express Extender Card Applications – Storage Server












2U server with extenders running to two GPGPUs Orientation optimized to minimize disruption to airflow Allows optimal location of add-in GPGPUs

3M™ Twin Axial Cable Assembly for PCI Express Extender Card Applications – HPC with GPGPUs


















Ordering Information

250 and 500 mm lengths are “standard”Custom lengths are available

Other options possibleDistributor Stock – October 20123M Cables Direct – October 2012

Type Base

X4 8KJ1-0727-XXXX XXXX = length in mm

X8 8KH2-0723-XXXX XXXX = length in mm

X16 8KC3-0726-XXXX XXXX = length in mm



Important Notice

The information we are furnishing you is being provided free of charge and is based on tests performed at internal 3M laboratory facilities. While we believe that these test results are reliable, their accuracy or completeness is not guaranteed. Your results may vary due to differences in test types and conditions. This information is intended for use by persons with the knowledge and technical skills to analyze, handle and use such information. You must evaluate and determine whether the product is suitable for your intended application. The foregoing information is provided “AS-IS”. In providing this information makes no warranties regarding product use or performance, including any implied warranty of merchantability or fitness for a particular use

Warranty; Limited Remedy; Limited Liability. 3M’s product warranty is stated in its Product Literature available upon request. 3M MAKES NO OTHER WARRANTIES INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. If this product is defective within the warranty period stated above, your exclusive remedy shall be, at 3M’s option, to replace or repair the 3M product or refund the purchase price of the 3M product. Except where prohibited by law, 3M will not be liable for any indirect, special, incidental or consequential loss or damage arising from this 3M product, regardless of the legal theory asserted.

3M is a trademark of 3M Company.

Technology

Pc ie extender customer presentation sept 2012