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How to program on board NOR flash memory?

Former Member

Hello

 

I am currently developing a CPU board featuring Texas Instrument TMS320C6657-DSP. To boot this processor I am going to use its SPI boot capabilities and use this NOR flash memory to store my boot image. I would like to be able to access and write to the NOR flash while it is in system ( mounted on my PCB). I plan on using a XDS200 to communicate with the on board CPU I have done some research and it seems that it is possible to use a JTAG compliant device such as the TMS320C6657 to communicate to non JTAG compliant devices such as the NOR flash. I plan on providing a 60 pin header on the board to implement a XDS200 JTAG with my board. The pin layouts for a 60 pin JTAG can bee seen in this Texas Instruments document (Table 10). 

 

MY questions are as follows

 

(1) How can I program my flash memory using the XDS200 JTAG?

 

(2) Is there a better method to program my In System Memory?

  • 0

    well, i use FT2232H to program flash, while it's reseting main processor, because usually while processor is in reset, it has high-z output state on all pins (usually). But that means you have to connect to processor with 3 state bus driver, because when programming is done, it should not load bus.
    It should work for nor flash with 8b data bus, with spi flash i have no problems. That means you could use usb to load data, and use labview or write your own program to read hex data and download it do flash


    btw this board features ADSP-24189 running at 650MHz with native f32 supportimage