wm9714l Wolfson Microelectronics plc, wm9714l Datasheet - Page 115

• Manufacturer Part Number: wm9714l
• Description: Ac?97 Audio Codec
• Manufacturer: Wolfson Microelectronics plc

Pre-Production
TYPICAL OUTPUT CONFIGURATIONS
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The WM9714L has three outputs capable of driving loads down to 16Ω (headphone / line drivers) –
HPL, HPR and MONO - and four outputs capable of driving loads down to 8Ω (loudspeaker / line
drivers) – SPKL, SPKR, OUT3 and OUT4. The combination of output drivers, mixers and mixer
inverters means that many output configurations can be supported. Below are some examples of
typical output configurations for smartphone applications.
STEREO SPEAKER
Figure 37 shows a typical output configuration for stereo speakers with headphones, ear speaker and
hands-free operation. The table shows suggested mixer outputs to select for each output PGA for a
given operating scenario. (Note the inverted mixer outputs can be achieved using the mixer output
inverters INV1 and INV2).
Figure 37 Stereo Speaker Output Configuration
PP, Rev 3.2, October 2008
WM9714L
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