MACEKBC_CTRL_RXCLKON
val |= MACEKBC_CTRL_TXON | MACEKBC_CTRL_RXCLKON | MACEKBC_CTRL_RXINTEN;
ctrl | MACEKBC_CTRL_RXCLKON | MACEKBC_CTRL_TXON);
val |= MACEKBC_CTRL_TXON | MACEKBC_CTRL_RXCLKON;
val &= ~(MACEKBC_CTRL_TXON | MACEKBC_CTRL_RXCLKON);