VR_CTL0
CSR_WRITE_1(l, VR_CTL0, CTL0_START);
CSR_WRITE_1(l, VR_CTL0, l->ctl0);
CSR_WRITE_1(l, VR_CTL0, l->ctl0 | CTL0_TDMD);
CSR_WRITE_1(l, VR_CTL0 + 0x4, CTL0_STOP);
CSR_WRITE_1(l, VR_CTL0, CTL0_TXON | CTL0_RXON | CTL0_START);