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WM9711 Datasheet(PDF) 51 Page - Wolfson Microelectronics plc |
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WM9711 Datasheet(HTML) 51 Page - Wolfson Microelectronics plc |
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51 / 66 page  Production Data WM9711L w PD Rev 4.1 April 2004 51 REGISTER BITS BY ADDRESS Register 00h is a read-only register. Writing any value to this register resets all registers to their default, but does not change the contents of reg. 00h. Reading the register reveals information about the codec to the driver, as required by the AC’97 Specification, Revision 2.2 REG ADDR BIT LABEL DEFAULT DESCRIPTION REFER TO 14:10 SE [4:0] 11000 Indicates a codec from Wolfson Microelectronics 9:6 ID9:6 0101 Indicates 18 bits resolution for ADCs and DACs 5 ID5 1 Indicates that the WM9711L supports bass boost 4 ID4 1 Indicates that the WM9711L has a headphone output 3 ID3 0 Indicates that the WM9711L does not support simulated stereo 2 ID2 1 Indicates that the WM9711L supports bass and treble control 1 ID1 0 Indicates that the WM9711L does not support modem functions 00h 0 ID0 0 Indicates that the WM9711L does not have a dedicated microphone ADC Intel’s AC’97 Component Specification, Revision 2.2, page 50 Register 02h controls the output pins LOUT2 and ROUT2. REG ADDR BIT LABEL DEFAULT DESCRIPTION REFER TO 15 MU 1 (mute) Mutes LOUT2 and ROUT2. 13:8 LOUT2 VOL 000000 (0dB) LOUT2 volume 7 ZC 0 (OFF) Enables zero-cross detector 6 INV 0 (not inverted) Inverts LOUT2 (for BTL speaker operation) 02h 5:0 ROUT2 VOL 000000 (0dB) ROUT2 volume Analogue Audio Outputs Register 04h controls the headphone output pins, HPOUTL and HPOUTR. REG ADDR BIT LABEL DEFAULT DESCRIPTION REFER TO 15 MU 1 (mute) Mutes HPOUTL and HPOUTR. 13:8 HPOUTL VOL 000000 (0dB) HPOUTL volume 7 ZC 0 (OFF) Enables zero-cross detector 04h 5:0 HPOUTR VOL 000000 (0dB) HPOUTR volume Analogue Audio Outputs Register 06h controls the analogue output pin MONOOUT. REG ADDR BIT LABEL DEFAULT DESCRIPTION REFER TO 15 MU 1 (mute) Mutes MONOOUT. 7 ZC 0 (OFF) Enables zero-cross detector 06h 5:0 MONOOUT VOL 000000 (0dB) MONOOUT volume Analogue Audio Outputs |
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