KS_RXCR1
ks8851_wrreg16(ks, KS_RXCR1, rxc->rxcr1);
ks8851_wrreg16(ks, KS_RXCR1, (RXCR1_RXPAFMA | /* from mac filter */
ks8851_wrreg16(ks, KS_RXCR1, 0x0000);
ks8851_wrreg16(ks, KS_RXCR1, 0x00);