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DSD1794A stand-alone ... how to connect program pins?

Jesper Mønsted
Intellectual 330 points
Other Parts Discussed in Thread: DSD1794A

Hello E2Es,

I will be using the DSD1794A in stand-alone mode for some time and would appreciate a tip on how I connect these pins in the meantime:

Pins 1 & 2 (DSDL & DSDR)

Pins 10-14 (ADR0, ADR1, SCL, SDA, RST (reset active low!))

Do I connect them to VDD or to ground (except for reset), and should I add a 10kohm resistor inbetween either VDD or GND?

Tips are appreciated ;-)

Greetings,

Jesper Mønsted

  • 0
    TI__Guru**** 189399 points

    Hi, Jesper,

    DSDL and DSDR are used for audio data input when in DSD and external DF modes PCM-mode zero flag for x-channel when in zero-flag output mode. They are 5V compliant.

    I guess this part will work if you don't use I2C to control it, just check the default values in Table 2 of the d/s to ensure they meet your needs. You can tie ADR0 and 1 wherever you like, they are 5V tolerant.

    As for the RST pin, it is 5V tolerant, and is described on pages 15 and 16 of the d/s.

    -d2

  • 0 in reply to Don Dapkus
    Intellectual 330 points

    Hi Don,

    & thanks for replying. Regarding the I2C controls I have already checked with the datasheet and as far as I can see it will work close-to-desired with the default values. And pleased to hear that this IC is not fuzzy about how I connect the pins that will not be used right now.

    Happy December ;-)

    Jesper Mønsted