Pre-Production
WM8961
REGISTER
SETTING
COMMENT
Reset device if required
0x0F - write
0x0000
0x0F - read
0x08 - write
0x52 - write
0x57 - write
-
Read Chip ID (=0x1801)
Enable system clocks
Class W power switching
0x01F4
0x0003
0x0020
Enable the write sequencer, DAC to headphone
playback with -20dB volume setting
0x5A - write
0x0080
Start the write sequencer to configure pre-programmed
enable of the DAC playback (digital input to headphone
output) path. Analogue input PGAs still muted.
Allow enough time for the sequencer to finish
0x5D - read
-
Read status of write sequencer and wait until the
WSEQ_BUSY,bit0,=0 which indicates that the DAC
playback path has been configured. Then continue.
Table 68 Register Settings for DAC to Headphone playback (-20dB volume setting)
DAC TO SPEAKER AND HEADPHONE PLAYBACK
In order to simplify the configuration of DAC to speaker playback, the headphone output should first
be enabled.
Figure 69 WM8961 Block Diagram for DAC to Speaker and Headphone Playback
PP, April 2009, Rev 3.0
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
