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+--- Thread: Adafruit I2S Audio Bonnet (/showthread.php?tid=3776)
Adafruit I2S Audio Bonnet - yellowruby - 05-05-2021
Is the Adafruit I2S audio bonnet (UDA1334A I2S Stereo DAC) supported? I've tried the generic I2S DAC setting and a lot of others with no success. Will any of the devices work for this Adafruit I2S HAT? Thank you.
RE: Adafruit I2S Audio Bonnet - Tim Curtis - 05-05-2021
What I2S driver does the manufacturer specify?
RE: Adafruit I2S Audio Bonnet - jonners - 05-05-2021
Try the HiFiBerry DAC setting if you haven't already.
RE: Adafruit I2S Audio Bonnet - yellowruby - 05-05-2021
(05-05-2021, 11:29 AM)jonners Wrote: Try the HiFiBerry DAC setting if you haven't already.
Thank you. I just tried that device, HiFiBerry DAC, but it does not work for this audio bonnet. No sound. Nothing.
RE: Adafruit I2S Audio Bonnet - yellowruby - 05-05-2021
(05-05-2021, 10:44 AM)Tim Curtis Wrote: What I2S driver does the manufacturer specify?
I have reached out to Adafruit to find out. In the datasheet for the UDA 1334ATS DAC, they mention a multiple data format data interface: I2S-bus and LSB-justified format compatible and 1fs input data rate. They also say the UDA1334ATS supports the I2S-bus data format with word lengths of up to 24 bits and the LSB-justified serial data format with word lengths of 16, 20 and 24 bits. They also list Digital Interface Format Select, saying that the digital audio interface formats can be
selected via pins SFOR1 and SFOR0 as shown in Table 4. For the digital audio interface holds that the BCK frequency can be maximum 64 times WS frequency.
The WS signal must change at the negative edge of the BCK signal for all digital audio formats.
Table 4 Data format selection
SFOR1 SFOR0 INPUT FORMAT
LOW LOW I2S-bus input
LOW HIGH LSB-justified 16 bits input
HIGH LOW LSB-justified 20 bits input
HIGH HIGH LSB-justified 24 bits input
I'm not sure how helpful any of that is. I'll also post what Adafruit tells me. Thank you.
RE: Adafruit I2S Audio Bonnet - yellowruby - 07-19-2021
To close this tread, this Adafruit I2S audio bonnet works with either the Generic-1 I2S (hifiberry-dac) or Generic-2 I2S (rpi-dac) audio device profiles.