AR9285_AN_RXTXBB1_SPARE9
reg_field = MS(OS_REG_READ(ah, 0x7840), AR9285_AN_RXTXBB1_SPARE9);
reg_field = MS(OS_REG_READ(ah, AR9285_AN_RF2G9), AR9285_AN_RXTXBB1_SPARE9);