03-26-2014 02:26 AM
I have a requirement of Artix-7 FPGA (XC7A200T) in my design. I have seen some of the document and i couldnt get the which configuration PROM should be used for Artix-7 FPGA. So, can you please tell me PROM device for XC7A200T?
Then, please provide the reference schematics for XC7A200T device.
03-26-2014 01:27 PM
ug470 Table 1-1 shows the minimum size of configuration PROM as well as the bitstream length for each device. For the XC7A200T, the bistream length is listed as 77,845,216 bits and the minimum device size is 128 Mbits.
Which device you choose may depend on considerations such as how many IO pins you can tolerate losing to configuration and how fast you need the system to come up.
For low IO pin-count, typically Master SPI mode is best. See figure 2-10.
For fast startup, Master BPI is best. See figure 2-14.
Note that the schematics are generic for any 7-series parts, however there are some differences between 7-series families, mostly in the types of available IO banks and voltages.
03-26-2014 10:05 PM
03-26-2014 10:12 PM
You can use the master spi configuration, there is no slave SPI configuration scheme.
You can use the multiboot scheme to select between two designs, kindly check the following link for the configruation guide, you can check the multiboot section
03-27-2014 02:33 AM
Krishna, Thank you. So, i can use either G18 or P30 family from Parallel NOR flash memory in Micron.
Shall i use synchrounes mode for NOR flash memory on Master Mode BPI?
Can you please send me the reference schematics for FPGA-7 series?
Now, i am clear on loading different design revisions on FPGA through config flash.
03-27-2014 02:54 AM
Yes, G18F and P30 flashes are supported.
For Micron G18: Non-Mux interface family members are supported. check impact help for the list of flashes supported.
You can check ug470 for BPI synchronous mode support details for config.
It has the BPI interface details.
you can refer to KC705 board files(schematic) for BPI and SPI interface details
03-27-2014 05:11 AM
Thank you for your support. If i have doubt while designing, i will get back to you.