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Re: about ... I2C SMP bit
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版主
 
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它已經告訴你了，使用高速 400KHz 的I2C 時將Slew Rate control 打開，降低上升/下降緣的斜率，這樣在高速時可以降低 EMI 干擾。
低速I2C通訊時 (<100KHz) 可以關掉它，基本上在低速時開與關都沒有關係。
發表於: 2005/3/31 17:34
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about ... I2C SMP bit
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資深會員
 
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I2C mode
SMP: 1 = Slew rate control disabled for standard speed mode (100 kHz and 1 MHz) 0 = Slew rate control enabled for high speed mode (400 kHz) 請問什麼是Slew rate control 看範例程式, 有enable也有disable的 是enable 好還是disable好? 和master or slave 有關嗎?
發表於: 2005/3/30 20:59
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