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WM8991 Datasheet(PDF) 158 Page - Wolfson Microelectronics plc |
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WM8991 Datasheet(HTML) 158 Page - Wolfson Microelectronics plc |
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158 / 174 page  WM8991 Pre-Production w PP, May 2008, Rev 3.1 158 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION 6:0 SPKVOL [6:0] 79h (0dB) SPKPGA Volume (see Table 36 for SPKPGA volume control range) 15:4 000h Reserved - Do Not Change 3:2 AINLMODE [1:0] 00b AINLMUX Input Source 00 = INMIXL (Left Input Mixer) 01 = RXVOICE (RXP - RXN) 10 = DIFFINL (LIN12 PGA - LIN34 PGA) 11 = (Reserved) R39 (27h) Input Mixers (1) 1:0 AINRMODE [1:0] 00b AINRMUX Input Source 00 = INMIXR (Right Input Mixer) 01 = RXVOICE (RXP - RXN) 10 = DIFFINR (RIN12 PGA - RIN34 PGA) 11 = (Reserved) 15:8 00h Reserved - Do Not Change 7 LMP4 0b LIN34 PGA Non-Inverting Input Select 0 = LIN4 not connected to PGA 1 = LIN4 connected to PGA 6 LMN3 0b LIN34 PGA Inverting Input Select 0 = LIN3 not connected to PGA 1 = LIN3 connected to PGA 5 LMP2 0b LIN12 PGA Non-Inverting Input Select 0 = LIN2 not connected to PGA 1 = LIN2 connected to PGA 4 LMN1 0b LIN12 PGA Inverting Input Select 0 = LIN1 not connected to PGA 1 = LIN1 connected to PGA 3 RMP4 0b RIN34 PGA Non-Inverting Input Select 0 = RIN4 not connected to PGA 1 = RIN4 connected to PGA 2 RMN3 0b RIN34 PGA Inverting Input Select 0 = RIN3 not connected to PGA 1 = RIN3 connected to PGA 1 RMP2 0b RIN12 PGA Non-Inverting Input Select 0 = RIN2 not connected to PGA 1 = RIN2 connected to PGA R40 (28h) Input Mixers (2) 0 RMN1 0b RIN12 PGA Inverting Input Select 0 = RIN1 not connected to PGA 1 = RIN1 connected to PGA 15:9 00h Reserved - Do Not Change 8 L34MNB 0b LIN34 PGA Output to INMIXL Mute 0 = Mute 1 = Un-Mute 7 L34MNBST 0b LIN34 PGA Output to INMIXL Gain 0 = 0dB 1 = +30dB 6 0b Reserved - Do Not Change 5 L12MNB 0b LIN12 PGA Output to INMIXL Mute 0 = Mute 1 = Un-Mute 4 L12MNBST 0b LIN12 PGA Output to INMIXL Gain 0 = 0dB 1 = +30dB R41 (29h) Input Mixers (3) 3 0b Reserved - Do Not Change |
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