EB21
state->m_Regs[EB21] |= 0x03; /* AGC2_Gain = -6 dB */
status = UpdateRegs(state, EB21, EB23);
state->m_Regs[EB21] = (state->m_Regs[EB21] & ~0x03); /* AGC 2 Gain = 0 (Datasheet = 3) */
status = UpdateRegs(state, EB21, EB23);