same fabric clock everywhere, to prevent jitter
lower sampling rates, to keep device freqs away from Nyquist zone boundaries
based on latest standard firmware

QICK configuration:

        Board: RFSoC4x2

        Software version: 0.2.186
        Firmware timestamp: Thu Sep 28 15:12:10 2023

        Global clocks (MHz): tProcessor 307.200, RF reference 409.600

        2 signal generator channels:
        0:      axis_signal_gen_v6 - tProc output 0, envelope memory 65536 samples
                DAC tile 0, blk 0, 32-bit DDS, fabric=307.200 MHz, f_dds=4915.200 MHz
        1:      axis_signal_gen_v6 - tProc output 1, envelope memory 65536 samples
                DAC tile 2, blk 0, 32-bit DDS, fabric=307.200 MHz, f_dds=4915.200 MHz

        2 readout channels:
        0:      axis_readout_v2 - controlled by PYNQ
                ADC tile 0, blk 0, 32-bit DDS, fabric=307.200 MHz, fs=2457.600 MHz
                maxlen 16384 (avg) 1024 (decimated)
                triggered by output 7, pin 14, feedback to tProc input 0
        1:      axis_readout_v2 - controlled by PYNQ
                ADC tile 0, blk 1, 32-bit DDS, fabric=307.200 MHz, fs=2457.600 MHz
                maxlen 16384 (avg) 1024 (decimated)
                triggered by output 7, pin 15, feedback to tProc input 1

        2 DACs:
                DAC tile 0, blk 0 is DAC_B
                DAC tile 2, blk 0 is DAC_A

        2 ADCs:
                ADC tile 0, blk 0 is ADC_D
                ADC tile 0, blk 1 is ADC_C

        8 digital output pins:
        0:      PMOD0_0 (output 7, pin 0)
        1:      PMOD0_1 (output 7, pin 1)
        2:      PMOD0_2 (output 7, pin 2)
        3:      PMOD0_3 (output 7, pin 3)
        4:      PMOD0_4 (output 7, pin 4)
        5:      PMOD0_5 (output 7, pin 5)
        6:      PMOD0_6 (output 7, pin 6)
        7:      PMOD0_7 (output 7, pin 7)

        tProc axis_tproc64x32_x8: program memory 1024 words, data memory 1024 words
                external start pin: PMOD1_0

        DDR4 memory buffer: 1073741824 samples, 256 samples/transfer
                wired to readouts [0, 1], triggered by output 7, pin 13

        MR buffer: 8192 samples, wired to readouts [0, 1], triggered by output 7, pin 12