S_RXPOLARITY
#define V_RXPOLARITY(x) ((x) << S_RXPOLARITY)
#define G_RXPOLARITY(x) (((x) >> S_RXPOLARITY) & M_RXPOLARITY)
#define V_RXPOLARITY(x) ((x) << S_RXPOLARITY)
#define G_RXPOLARITY(x) (((x) >> S_RXPOLARITY) & M_RXPOLARITY)