Цитат: The CS4331's I2S interface has one big disadvantage that it shares with the majority of all audio DACs: it requires a fixed ratio between the sample rate and the processor's main clock. If the AT91SAM7 is running with the USB-compatible 48 MHz clock, it is not possible to generate an I2S data stream with the usual 44.1 kHz sample rate. The closest is 46.9 kHz, so everything is played a few percent too fast. It sounds bad, but is OK for testing.
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