RXCFG_MXDMA_SHIFT
rxcfg |= val << RXCFG_MXDMA_SHIFT;
#define RXCFG_MXDMA_512 (0U << RXCFG_MXDMA_SHIFT)
#define RXCFG_MXDMA_4 (1U << RXCFG_MXDMA_SHIFT)
#define RXCFG_MXDMA_8 (2U << RXCFG_MXDMA_SHIFT)
#define RXCFG_MXDMA_16 (3U << RXCFG_MXDMA_SHIFT)
#define RXCFG_MXDMA_32 (4U << RXCFG_MXDMA_SHIFT)
#define RXCFG_MXDMA_64 (5U << RXCFG_MXDMA_SHIFT)
#define RXCFG_MXDMA_128 (6U << RXCFG_MXDMA_SHIFT)
#define RXCFG_MXDMA_256 (7U << RXCFG_MXDMA_SHIFT)