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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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WM8994ECS/R Datenblatt(PDF) 145 Page - Cirrus Logic |
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WM8994ECS/R Datenblatt(HTML) 145 Page - Cirrus Logic |
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145 / 363 page  WM8994 Rev 4.6 145 Typical applications for the line outputs (single-ended or differential) are: Handset or headset microphone output to external voice CODEC Stereo line output Output to external speaker driver(s) to support additional loudspeakers When single-ended mode is selected for either LINEOUT1 or LINEOUT2, a buffered VMID must be enabled as a reference for the outputs. This is enabled by setting the LINEOUT_VMID_BUF_ENA bit as defined in Table 76. REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION R56 (0038h) AntiPOP (1) 7 LINEOUT_VMID_BUF_E NA 0 Enables VMID reference for line outputs in single-ended mode 0 = Disabled 1 = Enabled Table 76 LINEOUT VMID Buffer for Single-Ended Operation Some example line output configurations are listed and illustrated below. Differential line output from Mic/Line input on IN1L PGA Differential line output from Mic/Line input on IN1R PGA Stereo differential line output from output mixers MIXOUTL and MIXOUTR Stereo single-ended line output from output mixer to either LINEOUT1 or LINEOUT2 Mono single-ended line output from output mixer LINEOUT1N LINEOUT1P + LINEOUT1NMIX LINEOUT1PMIX MIXOUTLVOL MIXOUTRVOL Min = -57dB Max = +6dB Step = 1dB Min = -57dB Max = +6dB Step = 1dB 0dB or -6dB 0dB or -6dB LINEOUT2N LINEOUT2P + LINEOUT2NMIX LINEOUT2PMIX 0dB or -6dB 0dB or -6dB + + MIXOUTLVOL IN1L IN1R MIXOUTRVOL IN1R IN1L MIXOUTLVOL MIXOUTLVOL IN1L IN1R MIXOUTRVOL IN1R IN1L MIXOUTRVOL IN1L IN1R IN1L IN1R Ground Loop Noise Rejection Ground Loop Noise Rejection Ground Loop Noise Rejection Ground Loop Noise Rejection LINEOUT1N_MUTE=0, LINEOUT1P_MUTE=0 LINEOUT2N_MUTE=0, LINEOUT2P_MUTE=0 LINEOUT1_MODE=0 LINEOUT2_MODE=0 IN1L_TO_LINEOUT1P=1 IN1R_TO_LINEOUT2P=1 LINEOUT1N LINEOUT1P + LINEOUT1NMIX LINEOUT1PMIX MIXOUTLVOL MIXOUTRVOL Min = -57dB Max = +6dB Step = 1dB Min = -57dB Max = +6dB Step = 1dB 0dB or -6dB 0dB or -6dB LINEOUT2N LINEOUT2P + LINEOUT2NMIX LINEOUT2PMIX 0dB or -6dB 0dB or -6dB + + MIXOUTLVOL IN1L IN1R MIXOUTRVOL IN1R IN1L MIXOUTLVOL MIXOUTLVOL IN1L IN1R MIXOUTRVOL IN1R IN1L MIXOUTRVOL IN1L IN1R IN1L IN1R Ground Loop Noise Rejection Ground Loop Noise Rejection Ground Loop Noise Rejection Ground Loop Noise Rejection LINEOUT1N_MUTE=0, LINEOUT1P_MUTE=0 LINEOUT2N_MUTE=0, LINEOUT2P_MUTE=0 LINEOUT1_MODE=0 LINEOUT2_MODE=0 IN1R_TO_LINEOUT1P=1 IN1L_TO_LINEOUT2P=1 Figure 37 Differential Line Out from input PGA IN1L (to LINEOUT1) and IN1R (to LINEOUT2) Figure 38 Differential Line Out from input PGA IN1R (to LINEOUT1) and IN1L (to LINEOUT2) |
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