HRW_SCC_TRANS_EN_N
fcr &= ~HRW_SCC_TRANS_EN_N;
fcr |= HRW_SCC_TRANS_EN_N;
MACIO_BIC(HEATHROW_FCR, HRW_SCC_TRANS_EN_N);
MACIO_BIS(HEATHROW_FCR, HRW_SCC_TRANS_EN_N);
MACIO_BIS(HEATHROW_FCR, HRW_SCC_TRANS_EN_N);