wm8961 Wolfson Microelectronics plc, wm8961 Datasheet - Page 111

• Manufacturer Part Number: wm8961
• Description: Ultra-low Power Stereo Codec With 1w Stereo Class D Speaker Drivers And Ground Referenced Headphone Drivers
• Manufacturer: Wolfson Microelectronics plc

Pre-Production
w
Figure 69 WM8961 Block Diagram for DAC to Speaker and Headphone Playback
Allow enough time for the sequencer to finish
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.
0x5A - write
0x0F - write
0x08 - write
0x52 - write
0x57 - write
0x5D - read
REGISTER
0x0F - read
SETTING
0x0000
0x01F4
0x0003
0x0020
0x0080
-
-
Reset device if required
Read Chip ID (=0x1801)
Enable system clocks
Class W power switching
Enable the write sequencer, DAC to headphone
playback with -20dB volume setting
Start the write sequencer to configure pre-programmed
enable of the DAC playback (digital input to headphone
output) path. Analogue input PGAs still muted.
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.
COMMENT
PP, April 2009, Rev 3.0
WM8961
111