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Communication Protocol
3-10 AT83SND2CMP3 User Guide
7525A–MP3–07/05
Table 3-2 . Player Command
Table 3-3 . File System Command
SYSTEM_PLAYER_MODE 0Dh 1 Byte Set Player mode on selected memory:
• Repeat / No Repeat
• Play Single
• Play Dir
• Play Disk
• Explorer Mode (see all file type for file transfer)
SYSTEM_AUDIO_INPUT 0Eh 1 Byte Enable Player Audio Input
• None - disable selected input
• Mono Input
• Stereo Input
SYSTEM_ENTER_HID_MODE 0Fh No Ask the Player to enter the HID mode: bridge USB - UART.
Protocol Command Command Data Description
Protocol Command Command Data Description
PLAYER_PLAY 50h No If current file name is a MP3 file, play or resume pause selected
MP3 file from Selected Memory.
If current file name is a directory, enter this directory and select
the first MP3. A new Play command is needed to play this new
MP3 file.
PLAYER_STOP 51h No Stop playing current MP3 file
PLAYER_PAUSE 52h No Pause current MP3 file
PLAYER_NEXT 53h No Select Next MP3file on Selected Memory
PLAYER_PREVIOUS 54h No Select Previous MP3 file on Selected Memory
PLAYER_SETMARKERA 55h No Set A marker for repeat AB feature
PLAYER_SETMARKERB 56h No Set B marker for repeat AB feature
PLAYER_STOPAB 57h No Stop AB repeat mode
PLAYER_GET_TIME 58h No Get Playing time since beginning of the file.
PLAYER_GETINDEXNUMBER 59h No Get Number of file in current directory or root directory.
PLAYER_ENTER_ROOT_DIR 5Ah No Select the first MP3 files available in root directory.
PLAYER_SET_FILTER 5Bh No Set filter to have no directory seen.
PLAYER_GET_FILE_LIST 5Ch No Get file names list in current directory or root directory.
PLAYER_PLAY_INDEX 5Dh Yes Play file selected by index.
Protocol Command Command Data Description
FS_NEXT 60h No Select next file from delected memory
FS_PREVIOUS 61h No Select previous file from selected memory
FS_ENTER_DIR 62h No Enter selected directory
FS_EXIT_DIR 63h No Exit current directory
FS_GET_NAME 64h No Get name of selected file or directory on selected memory
FS_FORMAT 65h No Format in FAT16 on selected memory