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WM8959 Datasheet(PDF) 56 Page - Wolfson Microelectronics plc |
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WM8959 Datasheet(HTML) 56 Page - Wolfson Microelectronics plc |
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56 / 155 page  WM8959 Pre-Production w PP, May 2008, Rev 3.1 56 OUTPUT SIGNAL PATH The WM8959 output routing and mixers provide a high degree of flexibility, allowing operation of many simultaneous signal paths through the device to various analogue outputs. The outputs provide many combinations of headphone, loudspeaker and single-ended line drivers. See “Analogue Outputs” for further details of these outputs. The WM8959 output signal paths and control registers are illustrated in Figure 29. + + + + OUTPUT MIXERS LOPGA ROPGA OUT3MIX OUT4MIX ROPMIX RONMIX LONMIX LOPMIX en en en en en en READBACK AVAILABLE MAIN REGISTER BIT REFERENCE REGISTER BIT ALSO REFERENCED ELSEWHERE IN DIAGRAM ROPGA_ENA ROPGAVOL [6:0] LOPGAVOL [6:0] (LDLO and LDSPK must not be enabled at the same time) LL12LOP LR12LOP LLOPGALOP LPGAO3 LI4O3 RPGAO4 RI4O4 RR12ROP RL12ROP RROPGAROP DAC DAC DAC_MUTE, DAC_MUTEMODE, DAC_MUTERATE, DAC_SB_FILT, DEEMP[1:0] DACL DACR en en (RDRO and RDSPK must not be enabled at the same time) LOPGA_ENA LOMIX_ENA LOMIX + ROMIX + + LOPLON LROPGALON en + en RLOPGARON ROPRON RROPGARON LLOPGALON en ROMIX_ENA RRI3ROVOL[2:0] RL12ROVOL[2:0] RR12ROVOL[2:0] RLBROVOL[2:0] RRBROVOL[2:0] RDRO RRBRO RLBRO RR12RO RL12RO RRI3RO RLI3ROVOL [2:0] RLI3RO en LLBLOVOL[2:0] LDLO LLBLO LRBLO LR12LO LL12LO LRI3LO LRBLOVOL[2:0] LR12LOVOL[2:0] LL12LOVOL[2:0] LRI3LOVOL[2:0] LI3LO LI3LOVOL[2:0] SPKMIX + en LI2SPK LOPGASPK LDSPK RDSPK ROPGASPK RI2SPK RB2SPK LB2SPK LOUT OUT3 OUT4 LON LOP ROP RON HP HP ROUT HP HP Line Line Line Line en en en en en en en en ROATTN OUT4ATTN OUT4_ENA ROUTVOL[6:0] ROUT_ENA LOUT_ENA LOUTVOL[6:0] OUT3_ENA OUT3ATTN LOATTN SPKP SPKN SPK SPKPGA SPK_ENA en ACGAIN [2:0] DCGAIN [2:0] SPKATTN [1:0] SPKVOL [6:0] SPKPGA_ENA | SPK_ENA en LOP_ENA AINLMUX output Left MIC Left Line Input to Left Output Mixer Rx Voice - Left Line Input to Speaker Right Line Input to Speaker Rx Voice + Right Line Input to Right Output Mixer Right MIC AINRMUX output LON_ENA RON_ENA ROP_ENA Figure 29 Control Registers for Output Signal Path |
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