Other Parts Discussed in Thread: TAS5713, , TAS5754M
Hi Steve, I was trying to make an I2S demonstrator using a PCM2706 evaluation module from AliExpress and a TAS5713 soldered to a breakout-board.
The I2S signal generated by the PCM2706 is recognized correctly by a Maxim chip that does not need the MCLK signal. The TAS5713 however, which does need the MCLK signal, does not recognize the I2S signal that it gets from the PCM2706. The TAS5713 requires a rise-time of 5ns for MCLK, I couldn't find the specified MCLK risetime for PCM2706.
See attached scope-image of the MCLK output from my PCM2706, the image hardly changes when the pin is open or loaded by the TAS5713 with a 10k resistor in parallel.
What is your opinion on this situation? Is my PCM2706 chip behaving as it should or is it not?
Finally, can you confirm that MCLK is always 256*Fs as specified in the PCM2706 datasheet? For Fs=32, 44.1 or 48kHz?
Best regards, EJ