ESRC_ADC
eap1371_src_write(sc, ESRC_ADC + ESRC_TRUNC_N, ESRC_SET_N(16));
eap1371_src_write(sc, ESRC_ADC + ESRC_IREGS, ESRC_SET_VFI(16));
eap1371_src_write(sc, ESRC_ADC + ESRC_VFF, 0);
eap1371_src_write(sc, ESRC_ADC + ESRC_TRUNC_N, ESRC_SET_N(16));
eap1371_src_write(sc, ESRC_ADC + ESRC_IREGS, ESRC_SET_VFI(16));
eap1371_src_write(sc, ESRC_ADC + ESRC_VFF, 0);