MACCFG1_RX_FLOW
tmp |= MACCFG1_RX_FLOW;
tmp |= MACCFG1_RX_FLOW;
tmp &= ~MACCFG1_RX_FLOW;
val |= MACCFG1_RX_FLOW;
val |= MACCFG1_RX_FLOW;
tempval1 &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
tempval &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
tempval |= MACCFG1_RX_FLOW;