Programmable Devices
CPLDs, FPGAs, SoC FPGAs, Configuration, and Transceivers
19508 Discussions

Board design - how to connect VCC_PGM and does it need to be connected to the configuration memory?

MStof1
Beginner
485 Views

When VCC_PGM is a separate power supply, does that need to be used on the memory connected to the AS_DATA(3:0) pins?

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9 Replies
YuanLi_S_Intel
Employee
471 Views

Hi,


First of all, may i know which devices you are using?


Thank you.


MStof1
Beginner
446 Views
YuanLi_S_Intel
Employee
427 Views

For cyclone V, you may refer to pin connection guidelines as shown below for more information:

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/dp/cyclone-v/pcg-01014.pdf


MStof1
Beginner
424 Views

The pin connection guidelines do NOT indicate anything regarding what voltage should be used for a configuration memory part!  There used to be references for older parts regarding that.  Apparently, this isn't the case anymore!

YuanLi_S_Intel
Employee
392 Views

For configuration device, may i know which device you are using? if it is third party, you may need to refer to their datasheet.


MStof1
Beginner
388 Views

The configuration part is a Micron S25L128SAGMFI011.  Their data sheet just talks about voltage levels, not whether the voltage needs to be the separate programming voltage for the FPGA.  What does the FPGA expect regarding those EPCQ data inputs??  I remember that the Stratix III parts had reference designs that showed that the configuration part needed to use the same voltage source as the programming pins.  I am unable to find anything similar for the Cyclone V parts.

YuanLi_S_Intel
Employee
378 Views

Hi,


You may find the information such as configuration pin's voltage and connection in our pin connection guidelines user guide.


For cyclone V, it is as attached:

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/dp/cyclone-v/pcg-01014.pdf


Thank You


YuanLi_S_Intel
Employee
378 Views

Sorry the message continues here:


The voltage for every pin including the bank and powerail for main power pin can be found from page 40.


For cyclone V configuration pin, you may take a look at our handbook:

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/cyclone-v/cv_5v2.pdf (page 253)


MStof1
Beginner
365 Views

Page 253 of the handbook has the information I'm looking for.  Thank you.

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