input_commment.txt

uart_061109.rar

#rxd为接收端，现在没有测试接收功能，所以给rxd赋予0；ctsn为发送使能，低有效；
#PSEL  PENABLE             PADDR(32_bits)          PWRITE            PWDATA(31_bits)         rxd  ctsn  scaler(8_bits or 12_bits?8_bits:待从txd端发送的数据；12_bits:12位可编程时钟，即uart scaler reload value) 
 0        0     00000000000000000000000000000000     0    00000000000000000000000000000000    0     1      10100101（刚开始PADDR、PWDATA随便赋予32位数，这里赋予0）
 1        0     10000000000000000000000001111000     1    00000000000000000000000001110011    0     0      10100101（往UART control register'address 0x80000078 写控制信号数据，此时APB为setup status）
 1        1     10000000000000000000000001111000     1    00000000000000000000000001110011    0     0      10100101（APB为ENABLE status，one transfer has been finished，PENABLE must be deasserted at the transfer，完成控制信号的装载）
 1        0     10000000000000000000000001111100     1    00000000000000000000101010101010    0     0      10100101（往UART scaler register'address 0x8000007c 写12_bits的数据，此时APB为setup status）
 1        1     10000000000000000000000001111100     1    00000000000000000000101010101010    0     0      10100101（APB为ENABLE status，one transfer has been finished，PENABLE must be deasserted at the transfer，完成scaler reload value的装载）
 1        0     10000000000000000000000001110000     1    00000000000000000000000010100101    0     0      10100101（往UART data register'address 0x80000070 写8_bits的数据，此时APB为setup status）
 1        1     10000000000000000000000001110000     1    00000000000000000000000010100101    0     0      10100101（APB为ENABLE status，one transfer has been finished，PENABLE must be deasserted at the transfer，完成第一个待发送数据data的装载）
（问题：在装载待发送的8位数据data时，PWDATA的数据怎么与scaler的数据一样呢？重复啦？）
 1        0     10000000000000000000000001110000     1    00000000000000000000000011110000    0     0      11110000（往UART data register'address 0x80000070 写8_bits的数据，此时APB为setup status）
 1        1     10000000000000000000000001110000     1    00000000000000000000000011110000    0     0      11110000（APB为ENABLE status，one transfer has been finished，PENABLE must be deasserted at the transfer，完成第二个待发送数据data的装载）
 1        0     10000000000000000000000001110000     1    00000000000000000000000011111111    0     0      11111111（往UART data register'address 0x80000070 写8_bits的数据，此时APB为setup status）
 1        1     10000000000000000000000001110000     1    00000000000000000000000011111111    0     0      11111111（APB为ENABLE status，one transfer has been finished，PENABLE must be deasserted at the transfer，完成第三个待发送数据data的装载）