具体接线请到http://www.geek-workshop.com/thread-982-1-1.html
it seems a hardware limit to the project, considering switch to Due.
reminder 0x00:0000 1000 0000 0000=0x0800 the datasheet is reverse. 3-jump out of wav decoing--not used yet 5-selftest--not used yet 6-stream mode--not used yet 12,13,14-record function--not used yet
0x02:0000 0000 0000 0000=0x0000 need precise adujustment, shut down for now
0x03:1111 1000 0000 0000=0xF800
0x04,0x05:no need
0x06,0x07,0x0A,0x0C,0x0D,0x0E,0x0F: advance usage, don't know how to use yet.
0x08,0x09: read the header of the music. no use yet.
0x0B: volume control