User Manual

AN706-00040-2v0-E
19
5 SUPPORTED MEDIA
5.1 Formats that can be Used for USB Memory
The USB memory formats that can be used by the file system are given in Table 4. If using
a file system (middleware), a separate contract is required.
Table 4 Recognition Media Capacity and Applicable Formats
No.
Recognition Media
Capacity
Applicable Formats
Remarks
1
Max. 256Mbyte
FAT16 / FAT32
2
256M to 8Gbyte
FAT32
5.2 Audio Data
The items of audio data for the software development environment offered as a sample
are given in Table 5. If using MP3/AAC file decoder (middleware), a contract is required.
Table 5 Corresponding Audio Data
No.
Item
Description
Remarks
1
File format
MP3 or AAC
MP3 and AAC cannot be
handled simultaneously. (*)
2
File name
“music1.mp3” to “music5.mp3”
“music1.aac” to “music5.aac”
3
Sampling
rate
8k/11.025k/12k/16k/22.05k/24k/
32k/44.1k/48k
Unit: Hz
4
Bit rate
8k to 320kbps
VBR not supported
Sampling rate is up to
160kbps in the case of
44.1kHz/48kHz.
5
Channel
mode
[MP3]
joint stereo
Intensity stereo
MS stereo
dual channel
[AAC]
stereo(MPEG2/MPEG4)
* Cannot be assembled simultaneously due to restriction of microcontroller built-in RAM
size.