Atmel AT83SND2C MP3 - Manual (Page 57)

Protocol Frame Description
AT83SND2CMP3 User Guide 5-53
7525A–MP3–07/05
Because that the memory selection can happens even without the
SYSTEM_SELECT_MEMORY command, it is possible that the AT83SND2CMP3 will
send the SYSTEM_MOUNTED frame in the following case:
„
USB attach (reselect default memory before USB enumeration).
„ USB detach (reselect default memory and install FAT on it).
Table 5-75 . SYSTEM_MOUNTED Frame
CUSTOM_PLAYER_TOTALTIM
E* Frame
Total time playable of MP3 file.
Player response to CUSTOM_PLAYER_GETTOTALTIME command.
Note: the player response is only right whend MP3 file is CBR (Constant Bit Rate) encoded
MP3. When it is a VBR (Variable Bit Rate) encoded MP3, this information is wrong.
Table 5-76 . CUSTOM_PLAYER_TOTALTIME Frame
CUSTOM_PLAYER_END_OF_
FILE* Frame
This frame is sent when end of file is reached in playing mode.
This frame is a player response and is sent to notify Remote Controller that end of
current playing file is reached.
Table 5-77 . CUSTOM_PLAYER_END_OF_FILE Frame
CUSTOM_SYS_VERSION*
Frame
This frame is the response to CUSTOM_GET_SYS_VERSION command.
Frame Start Channel
Protocol
Command Data Length Data CheckSum
7Eh
If not used,
FFh
8Fh 01h Byte 0: Player Status Yes
Frame Start Channel
Protocol
Command Data Length Data CheckSum
7Eh
If not used,
FFh
E0h 00h
Byte 0: Player Status
Byte 1: Minute
Byte 2: Second
Yes
Frame Start Channel
Protocol
Command Data Length Data CheckSum
7Eh
If not used,
FFh
E1h 04h
Byte 0: Player Status
Byte 1: ‘E’ (45h)
Byte 2: ‘N’ (4Eh)
Byte 3: ‘D’ (44h)
Yes