No audio format on playback panel

[Doc77]

The .dsf file is the same DSD 1 bit 2.822 Mhz: this is a DSD64 or DSD128 ?? 

just divide the DSD sample rate by 44.1 and you'll get a number very close to 64 / 128 / 256 / etc.
In this case 2822 / 44.1 = 63.99... it's a DSD64

If my file is a DSD64, why my pcm audio output is 352.8 khz and not 176.4 khz ??

Innomaker DAC Hat pro is DSD native..