Using GPMC Registers to access Externel Device

Hi Pranay,

kashetty pranay kumar said:

Can you please provide some pointers to start working on it ?

See if the below pointers will be in help:

kashetty pranay kumar said:

What should be the Timing values in Config registers to access FPGA ?

This depends on your external device/FPGA and use case.

kashetty pranay kumar said:

Should we access our FPGA using NAND COMMAND, NAND DATA,NAND ADDRESS registers present in GPMC Register set.

I do not think so, these looks to be NAND specific.

Regards,
Pavel

Hi Pavel,

Thank you for the links. I will go through the links provided. Meanwhile if the NAND COMMAND.,NAND ADDRESS,NAND DATA registers should not be used to access FPGA, what registers should I use ?? There are no other registers in TRM in GPMC which are used to exchange data between GPMC and externel memory device. 

Thank you,

K.Pranay kumar

Hi Pavel,

Thanks for the reference links. From the  link   I understood that NOR flash is also like a part of Processor memory. We can directly access the NOR flash using memory read/write utility. The starting address of the NOR flash will be my base address of the chip select. Here my doubt is the NOR flash requires commands to be given( like read,write,erase,buffer etc). These commands are series of predefined data writes on the data bus (as per NOR data sheet). So how these commands are given if we simply write in to the NOR location( base address of Chip select ) directly. Is my understanding of accessing NOR flash is correct ??

If correct how to manage these commands for writing to NOR flash ??