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Valued Contributor III
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DDR3L on cyclone V E (HMC)

Does the cyclone V (5CEFA4F23I7) support DDR3L in Hard Memory Controller ?  

Handbook says: The SDRAM controller offers the following features: Low-voltage 1.35V DDR3L and 1.2V DDR3U support.  

But it refers to HPS, but i want to use HMC with dedicated pins and I'm not 100% sure.
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Valued Contributor III

Re: DDR3L on cyclone V E (HMC)

The 'F' in the part number indicates up to two hard memory controllers. A quick look in Quartus tells me the particular part you've specified has 1 hard memory controller. 

 

See: cyclone v device overview (http://www.altera.com/literature/hb/cyclone-v/cv_51001.pdf) - page 5 for an explanation of the part numbers. 

 

Regards, 

Alex
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Valued Contributor III

Re: DDR3L on cyclone V E (HMC)

I know that my device contains one HMC.  

I need to know, will my device work with DDR3L with HMC, via dedicated HMC pins on top edge of fpga.
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Valued Contributor III

Re: DDR3L on cyclone V E (HMC)

Use Quartus and Qsys to help you. Put a design together in Qsys, containing the DDR3 controller configured for DDR3L. Constrain Quartus to place the memory I/O along the top edge and see if Quartus offers a fit. 

 

I've given it a quick go, with your chosen device. It's failing to fit my design. However, the error isn't telling me the memory interface can't go on the top edge (I believe it can). I will endeavour to have another go when I have some more time. 

 

I recommend you try yourself. 

 

Regards, 

Alex
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Valued Contributor III

Re: DDR3L on cyclone V E (HMC)

Big thanks for try :)  

I already try to compile same design (i use megawizard example), but i don't have enough memory on my PC, and Fitter give me "out of memory" error:(
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Valued Contributor III

Re: DDR3L on cyclone V E (HMC)

Yes, it does work. I've successfully connected a DDR3L device, via the top edge, to the hard memory controller. Project attached. 

 

Regards, 

Alex
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Valued Contributor III

Re: DDR3L on cyclone V E (HMC)

I have new questions about HMC in Cyclone V and i ask it here. Will Cyclone V E supports both HMC working on max speed ? or just one hmc on 1 chip ?

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Valued Contributor III

Re: DDR3L on cyclone V E (HMC)

Hi, 

As suggested by a_x_h_75, you can know the total HMC per chip from Cyclone V overview - Sample Ordering Code and Available Options for Cyclone V E Devices 

From Table 4, you will be noted that A2 and A4 consists of 1 HMC while A, A7, and A9 consists of 2 HMC.
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Valued Contributor III

Re: DDR3L on cyclone V E (HMC)

 

--- Quote Start ---  

Hi, 

As suggested by a_x_h_75, you can know the total HMC per chip from Cyclone V overview - Sample Ordering Code and Available Options for Cyclone V E Devices 

From Table 4, you will be noted that A2 and A4 consists of 1 HMC while A, A7, and A9 consists of 2 HMC. 

--- Quote End ---  

 

Thx for answer, I know that A7 consist 2 HMC, but I have an strange idea that the two controllers made for the convenience of the location and is most suitable design, and may bee you can use only one of them.
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Valued Contributor III

Re: DDR3L on cyclone V E (HMC)

It should be possible to operate all the HMC' s in a particular package at max speed. As previously stated, you only have one HMC on the device you mentioned. However, the larger devices, with two, should be able to operate both at max speed. 

 

Cheers, 

Alex
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