CDC_RX_SIDETONE_IIR0_IIR_COEF_B2_CTL
{ CDC_RX_SIDETONE_IIR0_IIR_COEF_B2_CTL, 0x00 },
case CDC_RX_SIDETONE_IIR0_IIR_COEF_B2_CTL:
b2_reg = CDC_RX_SIDETONE_IIR0_IIR_COEF_B2_CTL + 0x80 * iir_idx;
int reg = CDC_RX_SIDETONE_IIR0_IIR_COEF_B2_CTL + 0x80 * iir_idx;