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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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WM8945ECS/R Datenblatt(PDF) 134 Page - Wolfson Microelectronics plc |
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WM8945ECS/R Datenblatt(HTML) 134 Page - Wolfson Microelectronics plc |
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134 / 169 page  WM8945 Production Data w PD, May 2011, Rev 4.1 134 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION REFER TO R40 (28h) Left INP PGA gain ctrl 8 PGA_VU 0 Input PGA Volume Update Writing a 1 to this bit enables the Left PGA volume to be updated 7 PGAL_ZC 0 Left Input PGA Zero Cross Detector 0 = Change gain immediately 1 = Change gain on zero cross only 6 PGAL_MUTE 1 Left Input PGA Mute 0 = Disable Mute 1 = Enable Mute 5:0 PGAL_VOL [5:0] 01_0000 Left Input PGA Volume 00_0000 = -12dB 00_0001 = -11.25dB … 01_0000 = 0dB ... 11_1111 = +35.25 Register 28h Left INP PGA gain ctrl REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION REFER TO R42 (2Ah) Output ctrl 15 THERR_ACT 1 Thermal Shutdown enable 0 = Disabled 1 = Enabled When THERR_ACT = 1, then an overtemperature condition will cause the speaker outputs to be disabled. 13 SPKR_VMID_ OP_ENA 0 Buffered VMID to SPKOUTR Enable 0 = Disabled 1 = Enabled 12 SPKL_VMID_O P_ENA 0 Buffered VMID to SPKOUTL Enable 0 = Disabled 1 = Enabled 10 LINEL_VMID_ OP_ENA 0 Buffered VMID to LINEOUTL Enable 0 = Disabled 1 = Enabled 8 LINEL_MUTE 1 LINEOUTL Output Mute 0 = Disable Mute 1 = Enable Mute 7 SPKR_DISCH 0 Discharges SPKOUTR output via approx 4k resistor 0 = Not active 1 = Actively discharging SPKOUTR 6 SPKL_DISCH 0 Discharges SPKOUTL output via approx 4k resistor 0 = Not active 1 = Actively discharging SPKOUTL 4 LINEL_DISCH 0 Discharges LINEOUTL output via approx 4k resistor 0 = Not active 1 = Actively discharging LINEOUTL 1 SPK_VROI 0 Buffered VREF to SPKOUTL / SPKOUTR resistance (Disabled outputs) 0 = approx 20k 1 = approx 1k 0 LINE_VROI 0 Buffered VREF to LINEOUTL resistance (Disabled output) 0 = approx 20k 1 = approx 1k Register 2Ah Output ctrl |
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