SK_RCINIT_XMAC_B2
sk_win_write_1(sc, SK_RCINIT_RX1, SK_RCINIT_XMAC_B2);
sk_win_write_1(sc, SK_RCINIT_TX1, SK_RCINIT_XMAC_B2);
sk_win_write_1(sc, SK_RCINIT_RX2, SK_RCINIT_XMAC_B2);
sk_win_write_1(sc, SK_RCINIT_TX2, SK_RCINIT_XMAC_B2);