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Altera_Forum
Honored Contributor I
1,337 Views

CX4-to-HSMC Adapter on Arria-II GX

Hello, 

 

I am trying to connect a CX-4 cable with the Arria-II GX FPGA Development Kit. The description for the CX4-to-HSMC Adapter (http://www.altera.com/products/ip/ampp/morethanip/morethanip.html?gsa_pos=2&wt.oss_r=1&wt.oss=cx4-to...) indicated that it is compatible with Altera Stratix-II GX development mainboards. 

I am wondering is the same adapter card compatible with the Arria-II GX FPGA board as well? 

 

 

Thank you 

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4 Replies
Altera_Forum
Honored Contributor I
58 Views

I have ordered a couple of these adapters to be used with the Arria II GX kit as well. I shall find out soon... but I am wondering what you may be suspecting in terms of compatibility. Because, both the sides of the adapter are standard. i.e. hsmc and cx4. Are you thinking that the cx-4 pins may not be connected to the correct transceivers on the a2gx board? 

 

-sanjay
Altera_Forum
Honored Contributor I
58 Views

 

--- Quote Start ---  

I have ordered a couple of these adapters to be used with the Arria II GX kit as well. I shall find out soon... but I am wondering what you may be suspecting in terms of compatibility. Because, both the sides of the adapter are standard. i.e. hsmc and cx4. Are you thinking that the cx-4 pins may not be connected to the correct transceivers on the a2gx board? 

 

-sanjay 

--- Quote End ---  

 

 

I'm curious about how it works for you, too. I have a few of the adapters that I may want to use with new dev kit. 

 

One quirk with the adapter was that the tx polarity was flipped so I had to force tx_invpolarity in FPGA design. Wondering if that's still the case with the adapter you got. 

 

Thanks!
Altera_Forum
Honored Contributor I
58 Views

Got them and tried them on the Arria II GX. They work. Looks like they fixed the tx polarity.

Altera_Forum
Honored Contributor I
58 Views

 

--- Quote Start ---  

Got them and tried them on the Arria II GX. They work. Looks like they fixed the tx polarity. 

--- Quote End ---  

 

 

That's good to know. Thanks!
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