Pioneer FH-X775BT Owner's Manual page 118

USB
MTP
MTP MTP
[AUX]
AUX
2 1
M.C.
M.C.
M.C.
Ar
iPod USB
USB
iPod USB
CD-U50E Pioneer USB
MTP
Android OS 4 0
MIXTRAX WAV
AUX
[AUX] OFF SRC
SYSTEM [OFF] [AUX]
FUNCTION
AUX
http://www.pioneer.eu/eur/products/25/121/tech/CarAudio/PTY.html
AUX
OFF
[NOT FOUND]
PTY
AUX iPod USB CD
M.C.
SRC
PTY
USB
AUX
CD