Atmel AT83SND2C MP3 - Manual (Page 17)

Communication Protocol
AT83SND2CMP3 User Guide 3-13
7525A–MP3–07/05
3.4 Player’s Operating Modes
All the commands sent by the Remote Controller can change the Player’s current
operating mode.
Figure 3-2. Player’s Operating Modes
Limitations: During Mass Storage operating mode, if a ring tone occured, it is advised
not to play the MP3 and let the user finish the USB mode. Refer to Table 5-12 .
SYSTEM_USB_DETACH Command Format
MASS
STORAGE
Power on
Reset
BOOT
Initialization
SYSTEM_SELECT
_MEMORY
PLAYER
PLAYER_PLAY
SYSTEM_
USB_CONNECT
SYSTEM_USB
_DISCONNECT
SYSTEM_USB
_CONNECT
INIT
IDLE
PLAYER_STOP
Status
=> Memory Error
or FileNameAvailable means
that INIT is finished.
PLAYER_STOP
PLAYER_PREVIOUS
PLAYER_X
FS_GET_NAME
Status
USB Connection
USB Transfer
Status
Playing
FileNameAvailable
Status
Not Playing
FileNameAvailable
MemoryError
Status
Not Playing
POWER
DOWN
SYSTEM_
POWERDOWN
SYSTEM_
WAKEUP
START
Available Command in IDLE Mode:
FS_GET_NAME
FS_EXIT_DIR
FS_FORMAT
FS_NEXT / FS_PREVIOUS
SYSTEM_X
HID Bridge
USB/UART
SYSTEM_ENTER
_HID
Hardware
Reset