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Chloé_Russell's avatar
Chloé_Russell
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7 years ago

EPCQL controller I Quartus version 16.0

Hello, I am trying to access in read and write my EPCQL-1024 from simple soft running in NIOSII. I have the Altera Serial Flash Controller I configured in QUAD mode connected from its avl_csr and a...
YuanLi_S_Intel's avatar
YuanLi_S_Intel
Icon for Regular Contributor rankRegular Contributor
7 years ago
Hi Chloe, Yes, you are right. USB Blaster doesn't have the ability to change TCK frequency. From your explanation, it seems like the design has no problem as it is able to perform read and write to EPCQ-1024. However, the eclipse get "stuck" after you have performed write operation (erase / write). To recover this, you will need to re-power the board and you are able to see changes on EPCQ-1024. It seems like the connection between Host PC and FPGA is having problem. Can you try with the other cable? Perhaps USB Blaster II with 6MHz TCK Frequency? Regards, YL
Chloé_Russell's avatar
Chloé_Russell
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7 years ago
Hi , Thank you for your reply. Can you explain to me please how the connection between Host PC and FPGA could have a problem? Does the frequency of the cable affect the connection between the FPGA and the EPCQL, I have only the USB Blaster I and my controller works at 25Mhz generated by PLL. I do not understand how the frequency cable affects the connection between FPGA and EPCQL following write operations. Best Regards, CR