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LASO - Learn ARM with Source Open

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AC97 Timing 时序

AC97 Timing

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1 Frame = 256 bits = 32 bytes

1 Frame = 13 time slots

slot 0 = Tag Phase = 16bit

slot 1-12 = Data Phase = 20bit * 12

16bit + 20bit * 12 = 256bits



48Khz * 256 = 12.288 Mhz



Sample BIT CLK = BITCLK * 2 = 24.576Mhz



MCLKA = 24.576Mhz => 由外部晶振制造的

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