In order to allow for pipelined processing of datastreams with no latency introduced by FIFOs or glue between blocks, dedicated custom interfaces have been introduced: real and complex numbers and associated control signals. These interfaces are of varying, user defined, bit width. A complex number is two real numbers processed in parallel.
OscillatorIMP ecosystem FPGA IP sources: see for generating such information.
| Block name | Function | Input(s) | Output(s) | Parameter(s) | Driver | Library function(s) (liboscimp) |
|---|---|---|---|---|---|---|
| ad9767 | Redpitaya DAC (obsolete: see redpitaya_converters) | dataA_in,dataB_in | none | none | none | |
| add_constComplex | Add a constant to complex value stream | data_in | data_out | DATA_IN_SIZE(16), DATA_OUT_SIZE(18) | add_const | add_const_set_offset, add_const_get_offset, add_constMulti_set_offset |
| add_constReal | Add a constant to real value stream | data_in | data_out | DATA_IN_SIZE(16), DATA_OUT_SIZE(18) | add_const | add_const_set_offset, add_const_get_offset, add_constMulti_set_offset |
| adder_substracter_complex | Sum or difference of complex values | data1_i, data2_i | data_o | DATA_SIZE(16) | none | none |
| adder_substracter_real | Sum or difference of real values | data1_i, data2_i | data_o | DATA_SIZE(16) | none | none |
| axiStreamToComplex | Xilinx AXI Stream to complex stream | s00_axis, s00_axis_reset, s00_axis_aclk | data_out | DATA_SIZE(32) | none | none |
| axiStreamToReal | Xilinx AXI Stream to real stream | s00_axis, s00_axis_reset, s00_axis_aclk | data_out | DATA_SIZE(32) | none | none |
| axi_deltaSigma | Slow DAC output (Sigma-Delta) | TODO | TODO | TODO | TODO | TODO |
| axi_to_dac | AXI value to DAC | none | dataA_out, dataB_out | DATA_SIZE(14) | axi_to_dac | axi_to_dac_full_conf |
| cacode | GPS Gold Code generator (outputs 31 codes in parallel -- select using slv_to_sl (std logic vector to std logic) | clk, reset, tick_i | gold_code_o | PERIOD_LEN | none | none |
| convertComplexToReal | Complex -> real values | data_in | dataI_out,dataQ_out | DATA_SIZE(8) | none | none |
| convertRealToComplex | Real -> complex values | dataI_in,dataQ_in | data_out | DATA_SIZE(8) | none | |
| cordicAtan | Atan2(Q,I) | data_in | data_out | DATA_IN_SIZE(32), DATA_OUT_SIZE(28), NB_ITER(25), PI_VALUE(pi x 2^(NB_ITER-1)) | none | |
| dataComplex_to_ram | PL to PS transfer (complex values) | dataN_in | none | DATA_SIZE(32), NB_INPUT(12), NB_SAMPLE(1024) | data_to_ram | |
| dataReal_to_ram | PL to PS transfer (real values) | dataN_in | none | DATA_SIZE(32), NB_INPUT(12), NB_SAMPLE(1024) | data_to_ram | |
| delayTempoReal_axi | Delays the real stream by a given number of clock cycles | data_in | data_out | DATA_SIZE(16), MAX_NB_DELAY(6), DEFAULT_DELAY(0) | none | none |
| dupplReal_1_to_2 | Splits a real value stream | data_in | data1_out,data2_out | DATA_SIZE(8) | none | |
| dupplComplex_1_to_2 | Splits a complex value stream | data_in | data1_out,data2_out | DATA_SIZE(8) | none | |
| expanderComplex | Add Most Significant Bits (complex) | data_in | data_out | DATA_IN_SIZE(16), DATA_OUT_SIZE(16) | none | |
| expanderReal | Add Most Significant Bits (real value) | data_in | data_out | DATA_IN_SIZE(16), DATA_OUT_SIZE(16) | none | |
| fft | Cordic based Fast Fourier Transform | data_in | data_out | LOG_2_N_FFT(11), SHIFT_VAL(16), DATA_SIZE(32), DATA_IN_SIZE(16), USE_FIRST_BUFF(true), USE_SEC_BUFF(true), USE_EOF(false) | fft | fft_send_conf |
| firReal | Finite Impulse Response (FIR) filter with real coefficients provided from the processor, applied to real input stream | data_in | data_out | DATA_IN_SIZE(16), NB_COEFF(128), DECIMATE_FACTOR(32), DATA_OUT_SIZE(32), COEFF_SIZE(16) | fir | |
| ltc2145 | Redpitaya ADC (obsolete: see redpitaya_converters) | none | dataA_out,dataB_out | none | none | |
| meanComplex | outputs the mean value of the complex valued input stream | data_in | data_out | DATA_IN_SIZE(16), DATA_OUT_SIZE(18), NB_ACCUM(8), SHIFT(3), SIGNED_FORMAT(true) | none | none |
| meanReal | outputs the mean value of the real valued input stream | data_in | data_out | DATA_IN_SIZE(16), DATA_OUT_SIZE(18), NB_ACCUM(8), SHIFT(3), SIGNED_FORMAT(true) | none | none |
| mean_vector_axi | Average complex input stream (ADDR_SIZE=burst length) | data_in | data_out | DATA_SIZE(14),MAX_NB_ACCUM(1024),ADDR_SIZE(10) | ||
| mixer_sin | mixer | data_in,nco_in | data_out | DATA_IN_SIZE(16), DATA_OUT_SIZE(16), NCO_SIZE(16) | none | |
| nco_counter | NCO (sine & square = complex values) | none | sine_out, square_out | COUNTER_SIZE(28), DATA_SIZE(16) | nco_counter | nco_counter_send_conf |
| prn20b | 20-bit pseudo random number sequence (LFSR) | none | ref_clk_i, ref_rst_i, prn_full_o, bit_o | DFLT_PRESC(15), PRESC_SIZE(16) | none | none |
| redpitaya_adc_dac_clk | Repitaya clock distribution (ADC & DAC) | none | none | none | none | |
| redpitaya_converters | Redpitaya ADC/DAC converters | dataA_in, dataB_in | dataA_out, dataB_out | ADC_EN(true), DAC_EN(true), ADC_SIZE(14) | none | none |
| redpitaya_converters_12 | Redpitaya ADC/DAC converters for SignalLab | dataA_in, dataB_in | dataA_out, dataB_out | ADC_EN(true), DAC_EN(true) | redpitaya_converters_12 | redpitaya_converters_12_spi_conf, redpitaya_converters_12_ext_ref_enable, redpitaya_converters_12_get_ref_status |
| shifterReal | Bit shift (real values) | data_in | data_out | DATA_IN_SIZE(32), DATA_OUT_SIZE(16) | none | |
| shifterComplex | Bit shift (complex values) | data_in | data_out | DATA_IN_SIZE(32), DATA_OUT_SIZE(16) | none | |
| switchComplex | Complex stream multiplexer | data1_in,data2_in | data_out | DATA_SIZE(16),DEFAULT_INPUT(0) | switch | switch_conf |
| switchReal | Real stream multiplexer | data1_in,data2_in | data_out | DATA_SIZE(16),DEFAULT_INPUT(0) | switch | switch_conf |
| windowReal | Multiply a value stream by a time window | data_in | data_out | DATA_SIZE(32), COEFF_ADDR_SIZE(8), COEFF_SIZE(16) | fir | fir_send_conf |
For the pulse RADAR application:
| Block name | Function | Input(s) | Output(s) | Parameter(s) | Driver | Library function(s) (liboscimp) |
|---|---|---|---|---|---|---|
| check_valid_burst | ||||||
| extract_data_from_burst | ||||||
| gen_radar_prog |
For the pulse PlutoSDR demonstration and audio output/sigma-delta DAC with DC component output in general:
| Block name | Function | Input(s) | Output(s) | Parameter(s) | Driver | Library function(s) (liboscimp) |
|---|---|---|---|---|---|---|
| axi_deltaSigma |