31-01-2023, 02:48 PM
Hi Jeffrey
Some nice boards there. A lot of the larger FPGA's seam to be coming in BGA or similar packages which makes soldering difficult.
Hi Stephen
No it would be only for if the modulator chips were no longer available.
The FPGA will have no impact on it.
There are potentially a couple of ways that the modulators and video decoder. could be programmed.
This FPGA has a feature that makes booting from different program images stored in the flash memory easy.
It has a cold boot option which allows the boot image to be selected with 2 of the FPGA pins. It will then boot from this image at power up or when the FPGA is reset.
It has also a warm boot option which allows the current program to select a image and trigger the FPGA to boot from it.
The warm boot could be use to boot from an image that contains a bit banger to program the modulators. When it has completed programming the modulators it could then load the image that contains the converter.
A cold boot uses no extra logic but a warm boot would.
The PIC is doing the programming of the video decoder now. I think I will most likely to keep it to do that and the modulators.
Frank
Some nice boards there. A lot of the larger FPGA's seam to be coming in BGA or similar packages which makes soldering difficult.
Hi Stephen
No it would be only for if the modulator chips were no longer available.
The FPGA will have no impact on it.
There are potentially a couple of ways that the modulators and video decoder. could be programmed.
This FPGA has a feature that makes booting from different program images stored in the flash memory easy.
It has a cold boot option which allows the boot image to be selected with 2 of the FPGA pins. It will then boot from this image at power up or when the FPGA is reset.
It has also a warm boot option which allows the current program to select a image and trigger the FPGA to boot from it.
The warm boot could be use to boot from an image that contains a bit banger to program the modulators. When it has completed programming the modulators it could then load the image that contains the converter.
A cold boot uses no extra logic but a warm boot would.
The PIC is doing the programming of the video decoder now. I think I will most likely to keep it to do that and the modulators.
Frank
