baudrate
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BaudRate 计算说明
标签：文库时间：2024-09-13
【bwwdw.com - 博文网】
LSPCLK = SYSCLKOUT/4 = 25Mhz BRR = LSPCLK/(baud rate * 8) - 1
Baud rate = 2400bps:
BRR = 25M/(2400*8)-1 = 1301 SCIHBAUD = 0x05 SCILBAUD = 0x15
Baud rate = 4800bps:
BRR = 25M/(4800*8)-1 = 650 SCIHBAUD = 0x02 SCILBAUD = 0x8A
Baud rate = 9600bps:
BRR = 25M/(9600*8)-1 = 324 SCIHBAUD = 0x01 SCILBAUD = 0x44
Baud rate = 19200bps:
BRR = 25M/(19200*8)-1 = 162 SCIHBAUD = 0x00 SCILBAUD = 0xA2
Baud rate = 38400bps:
BRR = 25M/(38400*8)-1 = 80 SCIHBAUD = 0x00 SCILBAUD = 0x50
Baud rate = 57600bps:
BRR = 25M/(57600*8)-1 = 53 SCIHBAUD