Filter
Top Products
Design
4-24 AT83SND2CMP3 User Guide
7525A–MP3–07/05
status report in host system:
USB_MANUFACTURER_NAME: unicode character string (default “ATMEL”)
USB_PRODUCT_NAME: unicode characters string( “MP3 STORAGE”)
USB_SERIAL_NUMBER: unicode characters string (“4710765066451”)
SBC_VENDOR_ID: 8 ASCII characters string (default “03EBh”, ATMEL VID)
SBC_PRODUCT_ID:16 ASCII characters string (default “2010h”, ATMEL PID)
SBC_REVISION_ID: 4 ASCII characters string (“1.00”)
Default number of USB logical unit s one (= number of drive seen by Windows explorer).
It is necessary to select one memory (NandFlash or MMC/SD card) before entering
mass storage mode.
To have 2 logical unit (= number of drive seen by Windows explorer), please refer to
command SYSTEM_CONFIG.
4.1.3 File system AT83SND2CMP3 supports file system FAT12/16 and FAT32.
4.1.4 AT83SND2CMP3
IRQ IO
The SND2_IRQ IO P4_3 is used as an output for interrupt request from
AT83SND2CMP3 to Controller. This IO is cleared when Player status is updated by:
initialization finished (after Reset),
USB connection/detach,
end of MP3 file reached when playing,
Memory format is OK.
FAT install finished and OK.
This IO is set when status is read by any command by the Remote Controller
(SYSTEM_GET_STATUS command for example).
4.1.5 Audio Gain The Audio gain default value are:
MP3 VOLUME LEFT: MP3 digital volume left channel (default value : settings
Medium: 0Fh)
MP3 VOLUME RIGHT: MP3 digital volume right channel (default value : settings
medium: 0Fh)
MP3 BASS (default value : settings medium: 0Fh)
MP3 MEDIUM (default value : settings medium: 0Fh)
MP3 TREBBLE (default value : settings medium: 0Fh)
Line out (default value i: 02h, -3 dB).
Power Amplifier (default value : 07h, +2 dB).
Line in (default value : 08h, -9 dB).
Auxiliary in (default value: 07h, -6 dB).
Dac Master Gain (default value : 0Ch, -6 dB).
All these values can be updated with commands from Remote Controller.