MUSB2_REG_RXMAXP
MUSB2_WRITE_2(sc, MUSB2_REG_RXMAXP, td->reg_max_packet);
MUSB2_WRITE_2(sc, MUSB2_REG_RXMAXP, wMaxPacket);
MUSB2_WRITE_2(sc, MUSB2_REG_RXMAXP, wMaxPacket);
MUSB2_WRITE_2(sc, MUSB2_REG_RXMAXP, wMaxPacket);
REGDECL(MUSB2_REG_RXMAXP, 0x0084),