Honored Contributor
Honored ContributorThanks , i´m planing to remove the 7 seg and add one joystick and some pushbuttons (like gamepad) and leds...
The 7 seg fills a lot of space and it´s not so usefull... I will place a ddr1 or sram (x16 only) mem because the header connection its dangerous for ddr3. In addition the pcb tracks from the soc to the headers have unknow lenght and impedance because they are not designed to be a memory bus, so i need to use sram or ddr1 as much ... I will make two versions, one for the nano soc with ddr and other for the nano without ddr because it includes onboard ddr. Furthermore if i only make one board this will not feet perfect with both nanos I have enought idle pins the other header is fully empty What is your opinion? Your idea is to transmit hdmi from fpga to ad 9980 and then feed the 7123 wit the 9980´s output? The main concern it´s that both chips are expensive ... And what about use only the 7123 and people who has not vga monitor use an vga to hdmi adapter? Or dont use any ad chip and feed the hdmi directly from fpga and place and vga conector too but with 5 bits r-ladder dac If we have fpga why use an 9980 like chip, we can make it in hdl ... Send me your mail for discuss the layout if you like...
