Data Sheet

SOMO
-II Embedded Audio
-Sound Module
Contents
1. Description ............................................................................................................................. 3
2. Features ................................................................................................................................. 3
3. Pin Configuration and Summary .............................................................................................. 4
4. Pin Description ....................................................................................................................... 5
Micro-controller Interface Pins .............................................................................................................. 5
Key Interface Pins (Not ADKEYs) ............................................................................................................ 5
Key Interface Pins (ADKEY’s) .................................................................................................................. 5
Audio Output and Control Pins .............................................................................................................. 5
System Pins ............................................................................................................................................ 5
5. Operating Modes .................................................................................................................... 6
SERIAL MODE ......................................................................................................................................... 6
SERIAL MODE – Example Connection Diagram ...................................................................................... 9
KEY MODE ............................................................................................................................................ 10
Connecting up the Resistors and Pushbuttons to the ADKEY inputs ................................................... 11
KEY MODE - Example Connection Diagram .......................................................................................... 12
6. Files & Folder Structure......................................................................................................... 13
7. Media – micro-SD and USB Flash ........................................................................................... 14
Micro-SD cards ..................................................................................................................................... 14
USB Flash Drive .................................................................................................................................... 14
8. Mechanical Dimensions ........................................................................................................ 14
9. Development and Support Tools ........................................................................................... 14
Interfacing 4D Systems Display Modules ............................................................................................. 14
10. Optional Connections ......................................................................................................... 15
USB Socket for USB Flash Drive .......................................................................................................... 15
11. Specifications and Ratings ................................................................................................... 16
12. Legal Notice ........................................................................................................................ 17
13. Contact Information............................................................................................................ 17