WM8281 Datasheet, PDF (303/392 Pages) Cirrus Logic – Low Power Audio System with Ambient Noise Cancellation and Echo Cancellation

WM8281
The start index location of the the Boot Sequence is 384 (180h), as shown in Table 120. Index
locations 385 (181h) to 391 (187h) are available for any user-configured Boot Sequence
requirements. The remainder of the Boot Sequence memory (including index location 384) should not
be written to.
The sequencer memory is illustrated in Figure 81. The pre-programmed sequencer index locations
are highlighted. User-defined sequences should be programmed in other areas of the sequencer
memory.
Index
000h
020h
040h
060h
080h
0A0h
0C0h
0E0h
100h
120h
140h
160h
180h
1A0h
1C0h
1E0h
Description
HPOUT1L enable
HPOUT1L disable
HPOUT1R enable
HPOUT2L enable
HPOUT2R enable
HPOUT3L enable
HPOUT3R enable
Boot Sequence (User space): 181h to 187h
Reserved memory space: 180h, and 188h to 1BEh
HPOUT1R disable
HPOUT2L disable
HPOUT2R disable
HPOUT3L disable
HPOUT3R disable
SPKOUTL/R enable/disable (4 sequences)
Figure 81 Write Sequencer Memory
Rev 4.0
303