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Original question:

TAS5825M: I2C and BCLK sequence

TAS5825M: Wake up sequence from Deep Sleep

Kazuto Tatsumi
Intellectual 2820 points
Part Number: TAS5825M

Hi team,

According to the "7.4.5 Device State Control", it's necessary to stop I2S before I2C set Deep Sleep mode. However the restart procedure is not mentioned. Does it mean the host can send command to I2C before I2S ready? Otherwise could you tell me the input sequence in case of Deep Sleep to PLAY?

Regards,
Kazuto

  • +1
    TI__Mastermind 49770 points

    Hi kazuto Tatsumi

        I think it's not necessary to stop I2S first when you want to set Deep Sleep mode. Set register 0x03h - D[1:0] = 00 is enough to make device stays in Deep Sleep Mode. So you can keep I2S signals, and the device won't give out any outputs until it turns into PLAY mode. If it is necessary for your system to turn off I2S, you can turn it off after the device into Deep Sleep mode. When you want to turn the device into PLAY mode, make sure to turn on I2S clock first and keep it stable, then set the register  0x03h - D[1:0] = 11.

       Thank you.