SPI clock division control register.
SPI_MEM_CLKCNT_L | In the master mode it must be equal to spi_mem_clkcnt_N. |
SPI_MEM_CLKCNT_H | In the master mode it must be floor((spi_mem_clkcnt_N+1)/2-1). |
SPI_MEM_CLKCNT_N | In the master mode it is the divider of spi_mem_clk. So spi_mem_clk frequency is system/(spi_mem_clkcnt_N+1) |
SPI_MEM_CLK_EQU_SYSCLK | 1: 1-division mode, the frequency of SPI bus clock equals to that of MSPI module clock. |