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WM9711 Datasheet(PDF) 57 Page - Wolfson Microelectronics plc |
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WM9711 Datasheet(HTML) 57 Page - Wolfson Microelectronics plc |
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57 / 66 page  Production Data WM9711L w PD Rev 4.1 April 2004 57 Register 58h controls several additional functions. REG ADDR BIT LABEL DEFAULT DESCRIPTION REFER TO 15:13 COMP2DEL 000 (no delay) Selects Comparator 2 delay Battery Alarm 12 JIEN 0 Enables Jack Insert Detection 11 FRC 0 Forces Jack Insert Detection Analogue Audio Outputs, Jack Insertion and Auto-Switching 10 SVD 0 (enabled) Disables VREF for lowest possible power consumption Power Management 3:2 DIE REV Indicates device revision. 10=Rev.C N/A 1 WAKEEN 0 (no wake-up) Enables GPIO wake-up 58h 0 IRQ INV 0 (not inverted) Inverts the IRQ signal (pin 45) GPIO and Interrupt Control Register 5Ch controls several additional functions. REG ADDR BIT LABEL DEFAULT DESCRIPTION REFER TO 15 AMUTE 0 Read-only bit to indicate DAC auto-muting Audio DACs, Stereo DACs 14 C1REF 0 (AVDD/2) Selects Comparator 1 Reference Voltage 13:12 C1SRC 00 (OFF) Selects Comparator 1 Signal Source 11 C2REF 0 (AVDD/2) Selects Comparator 1 Reference Voltage 10:9 C2SRC 00 (OFF) Selects Comparator 1 Signal Source Battery Alarm 8 DS 0 Selects differential microphone input pins. 0=MIC1 and MIC2, 1=LINEL and LINER Analogue Inputs, Microphone Input 7 AMEN 0 (OFF) Enables DAC Auto-Mute 6:5 VBIAS 00 Selects analogue bias for lowest power, depending on AVDD supply. 0X=3.3V, 10=2.5V, 11=1.8V Power Management 4 ADCO 0 Selects source of SPDIF data. 0=from SDATAOUT, 1= from audio ADC Digital Audio (SPDIF) Output 3 HPF 0 Disables ADC high-pass filter Audio ADC 2 ENT 0 Enables thermal sensor Analogue Audio Outputs, Thermal Sensor 5Ch 1:0 ASS 00 Selects time slots for stereo ADC data. 00=slots 3 and 4, 01=7/8, 10=6/9, 11=10/11 Audio ADC, ADC Slot Mapping Registers 60h and 62h control the ALC and Noise Gate functions. REG ADDR BIT LABEL DEFAULT DESCRIPTION REFER TO 15:12 ALCL 1011 (-12dB) Controls ALC threshold 11:8 HLD 0000 (0 ms) Controls ALC hold time 7:4 DCY 0011 (192 ms) Controls ALC decay time 60h 3:0 ATK 0010 (24 ms) Controls ALC attack time 15:14 ALCSEL 00 (OFF) Controls which channel ALC operates on. 00=none, 01=right only, 10=left only, 11=both 13:11 MAXGAIN 111 (+30dB) Controls upper gain limit for ALC 10:9 ZC TIMEOUT 11 (slowest) Controls time-out for zero-cross detection 8 ALCZC 0 (OFF) Enables zero-cross detection for ALC 7 NGAT 0 (OFF) Enables noise gate function 5 NGG 0 (hold gain) Selects noise gate type. 0=hold gain, 1=mute 62h 4:0 NGTH 00000 (-76.5dB) Controls noise gate threshold Audio ADC, Automatic Level Control |
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