SPDIF_SELECT2
snd_ca0106_ptr_write(chip, SPDIF_SELECT2, 0, 0x000f0000);
snd_ca0106_ptr_write(emu, SPDIF_SELECT2, 0, 0x0b000000);
snd_ca0106_ptr_write(emu, SPDIF_SELECT2, 0, 0x000f0000);