Part Number: PCM2707C
In short, I'm looking for a simple OTS USB-to-I2S bridge. I want to interface to a PCM1860 ADC and a PCM5102A DAC and am curious if this part -- the PCM2707C can achieve this.
We planned to use the NRND CP2615 bridge but found that its discontinuous BCLK was not compatible with the PCM1860. The PCM2707C's on-board DAC, USB port and I2S capability suggested it would be a suitable candidate. In checking its datasheet I see that with pin 9 (FSEL) grounded, the I2S protocol is enabled, setting
- FUNC0 to LRCLK
- FUNC1 to BCLK
- FUNC2 to SYSCLK and
- FUNC3 to DIN
- DOUT is available on pin 17.
I obtained a PCM2707C evaluation board (EVM-U) and connected it to my board. I see activity from the ADC on DIN to the PCM2707 and am still working through the DAC side.
When I plug the EVM into my PC (Windows 10) it enumerates as "2- USB AUDIO DAC" and is available as a "playback" device. However, there's no "recording" device available from it.
Is there a configuration change I can make or is this part simply not suitable to act as a bridge in this way? Looking at section 9.5 of the datasheet I believe it is not but would appreciate confirmation.
If it's not compatible are there any TI (or TI-recommended) ICs that can provide the bridging function I'm after?
