Data Sheet

Shenzhen Waytronic Electronics Co., Ltd. WT2003S-16S Chip
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Mark Word:
00 stands for inter-cut specified index address in SPI-FLASH
01 stands for inter-cut specified index address in SD card
02 stands for inter-cut specified index address in U disk
Note:Only support inter-cut function when playing audio files in SD card or U disk, support inter-cut play
between several devices. When playing in Flash, not support inter-cut, return to 02.
After inter-cut audio play is finished, BUSY will have a low pulse 50MS.
3.4.3.16. Switch the current work drive letter (D2)
Start code
Length
Command
Parameter
Check code
End code
7E
04
D2
01: SD card(default)
D7
EF
02: U disk
D8
3.4.4.Reading operation command
3.4.4.1. Read the current volume setting(C1)
Start code
Length
Command
Check code
End code
7E
03
C1
C4
EF
Return format
Operation code
Return value
0XC1
Volume value(00-1F)
3.4.4.2. Read the current operation state(C2)
Start code
Length
Command
Check code
End code
7E
03
C2
C5
EF
Return format
Operation code
Return value
0XC2
01:play 02: stop 03:pause
3.4.4.3. Query the total number of music files in SD card (C5)
Start code
Length
Command
Check code
End code
7E
03
C5
C8
EF