Stratix 10 Dual-Port RAM (with 2 clocks) generation problem - Stratix 10 Dual-Port RAM (with 2 clocks) generation problem
Hi, i'm converting my Stratix V design to Stratix 10. in Stratix V i used the MegaWizard in quartus (13.1 i think) to create an SRAM with: 2 read+write ports 512 rows of 128bits each (same data bus width on both ports) different clock for each of the ports byte_enable support on both ports using QuarusPro "IP Catalog" i tried to get the same SRAM functionality. i used the "memory user guide" from Intels website at section 4.1.3. RAM: 2-PORT Intel FPGA IP Parameters In the optional clocking schemes for the generated SRAM. There is an option for different clocks for the 2 ports (A & B) When I try to generate the SRAM in the IP Catalog. I configure the parameters as follows : Then And then When coming to select the clocking scheme, I do not see the suggested option by the DOC. If selecting " Customize clocks for A and B ports " I can not use byte_enable on the ports please advise. Best Regards, Amir Nassie
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Re: Stratix 10 Dual-Port RAM (with 2 clocks) generation problem
Hi, If you look into https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/stratix-10/ug-s10-memory.pdf Table 10, it will shows that Stratix 10 does not support True Dual Port with byte enable features.
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Re: Stratix 10 Dual-Port RAM (with 2 clocks) generation problem
Thanks, but how do i get the 2 read+write ports (each in a different clock domain) functionality ?
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Re: Stratix 10 Dual-Port RAM (with 2 clocks) generation problem
Hi, thanks for the help. yes, i agree regarding the possibly misleading documentation. (who is authorized to approve that?) regarding the " Customize clocks for A and B ports", yes it is impossible to generate byte_enable for the ports. when selecting such clocking scheme i get the below error : Error: stx10_fpga_dpmram512x128.ram_2port_0: In 'Clks/Rd, Byte En' tab, ' Emulate TDP dual clock mode' must be enabled if clocking method is 'Customize clocks for A and B ports' for Stratix 10 while using two read/write ports. So I'm adding the TDP emulation check mark. Then I select to have byte_enable (for port A for example) And get the below error Error: stx10_fpga_dpmram512x128.ram_2port_0: In 'Clks/Rd, Byte En' tab, ' Byte Enable Ports' are unavailable while using 'Emulate TDP dual clock mode' feature .
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Re: Stratix 10 Dual-Port RAM (with 2 clocks) generation problem
Hi, I would recommend you to use "Dual Clock: use separate 'input' and 'output' clocks" setting.
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Re: Stratix 10 Dual-Port RAM (with 2 clocks) generation problem
I think there's a disconnect between the documentation and the parameter editor. I believe that the "Customize" option is what you need to select, but are you saying that when you do that, the byte_enable options for the two ports that you show in your last screenshot disappear? I don't have the software open at the moment to check this. - 2020-11-23
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