DTS on PS3

I’ve recently acquired a music DVD with a DTS track in 24/48. I know my receiver will decode up to 24/96 so my decoder can handle it, but what I’m wondering is when I’m using bitstream over Toslink, is my PS3 downconverting the DTS track to 16-bit? Like I said, this is a music DVD so the full 24-bit 48KHz sound is desired.