On 19/7/20 6:06 pm, glen english wrote: > Hi Mike > > Linux in the ZYNQ is instant on, well almost, 0.5 - 1 sec boot. > > The distros used are usually Buildroot based, The idea is to keep it > as close as possible to the PC mainline. > > FPGA accelerators can be abstracted out as software modules on the PC > > Even the small $15 FPGA can 'wipe the floor' with a RPi4 on specific > tasks. > > The ZYNQ has 1 Msps ADCs (with balanced inputs) we can use for audio > in, and for audio out we can use R-2R resistor networks as DACs... > > And as for digital radio interfaces, that's best done with a DUC/DDC > in the FPGA, and with low sample rates, we can keep the hardware > requirements low. > > I am going to try and keep the BOM < USD$50 for the SM1000/digital > side, and for the digital radio piggyback board, ADC/DAC, < USD60. > Most of the cost of the digital radio side is the quality clock > oscillator, and 16 bit DAC. > > -glen
Sounds like you have the ideas well worked out. Cheers Mike _______________________________________________ Freetel-codec2 mailing list Freetel-codec2@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freetel-codec2
