52 cfg = get_cfg(prm, hw);  variable
56 cfg = select_mode(common_mcic_list, a_mfir_list, b_mfir_list, common_clkdiv_list, cfg);  variable
57 cfg = get_cic_config(prm, cfg, hw);  variable
58 cfg = get_fir_config(prm, cfg, hw, spec);  variable
65 function cfg = get_fir_config(prm, cfg, hw, spec)
68         [coef, shift] = get_fir(cfg.mfir_a, prm, cfg, hw, spec);
70         [cfg.fir_coef_a, cfg.fir_shift_a, cfg.fir_length_a] = ...
71                 scale_fir_coef(coef, shift, spec.scale, cfg.remain_gain_to_fir, hw.bits_fir_coef);
72         cfg.fir_gain_a = 1;
74         cfg.fir_gain_a = 0;
75         cfg.fir_coef_a = 0;
76         cfg.fir_shift_a = 0;
77         cfg.fir_length_a = 1;
81         [coef, shift] = get_fir(cfg.mfir_b, prm, cfg, hw, spec);
83         [cfg.fir_coef_b, cfg.fir_shift_b, cfg.fir_length_b] = ...
84 		scale_fir_coef(coef, shift, spec.scale, cfg.remain_gain_to_fir, hw.bits_fir_coef);
85         cfg.fir_gain_b = 1;
87         cfg.fir_gain_b = 0;
88         cfg.fir_coef_b = 0;
89         cfg.fir_shift_b = 0;
90         cfg.fir_length_b = 1;
110 function [coef32, shift] = get_fir(mfir, prm, cfg, hw, spec)
112 fs_fir = cfg.mic_clk/cfg.mcic;
119 	dmic_fir(spec.rp, spec.rs, passhz, stophz, cfg.mic_clk, fs_fir, max_length, spec.linear_phase);
144 function cfg = select_mode(common_mcic_list, a_mfir_list, b_mfir_list, common_clkdiv_list, cfg)
146 cfg.mcic = 0;
147 cfg.mfir_a = 0;
148 cfg.mfir_b = 0;
149 cfg.clk_div = 0;
167         cfg.mcic = common_mcic_list(n);
168         cfg.clk_div = common_clkdiv_list(n);
170                 cfg.mfir_a = a_mfir_list(n);
173                 cfg.mfir_b = b_mfir_list(n);
176 		cfg.clk_div, cfg.mcic, cfg.mfir_a, cfg.mfir_b);
182 function cfg = get_cic_config(prm, cfg, hw)
184 cfg.mic_clk = hw.ioclk/cfg.clk_div;
185 g_cic = cfg.mcic^5;
187 cfg.cic_shift = bitsneeded - hw.bits_fir_input;
193 if cfg.cic_shift < hw.cic_shift_right_range(1);
194         fprintf(1,'Warning: Limited CIC shift right from %d', cfg.cic_shift);
195         cfg.cic_shift = hw.cic_shift_right_range(1);
198 if cfg.cic_shift > hw.cic_shift_right_range(2);
199         fprintf(1,'Error: Limited CIC shift right from %d', cfg.cic_shift);
200         cfg.cic_shift = hw.cic_shift_right_range(2);
204 cfg.remain_gain_to_fir = 2^(hw.bits_fir_input-1)/(g_cic/2^cfg.cic_shift);
301 function cfg = get_cfg(prm, hw)
310 cfg.hw_version = hw.version;
312 cfg.fifo_a_fs = prm.fifo_a_fs;
313 cfg.fifo_b_fs = prm.fifo_b_fs;
315 cfg.pdm01_provided = (prm.pdm(1).enable_mic_a | prm.pdm(1).enable_mic_b) ...
317 cfg.ch01_provided = (prm.fifo_a_fs > 0) + (prm.fifo_b_fs > 0)*2;
320         cfg.a_nchannels = prm.pdm(1).enable_mic_a + prm.pdm(1).enable_mic_b ...
323         cfg.a_nchannels = 0;
326         cfg.b_nchannels = prm.pdm(1).enable_mic_a + prm.pdm(1).enable_mic_b ...
329         cfg.b_nchannels = 0;