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WM8959 Datasheet(PDF) 127 Page - Wolfson Microelectronics plc |
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WM8959 Datasheet(HTML) 127 Page - Wolfson Microelectronics plc |
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127 / 155 page  Pre-Production WM8959 w PP, May 2008, Rev 3.1 127 REGISTER BITS BY ADDRESS REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION R0 (00h) Reset / ID 15:0 SW_RESET_CHIP_ ID [15:0] (rr) 8990h Writing to this register resets all registers to their default state. Reading from this register will indicate device family ID 8990h. 15:13 000b Reserved - Do Not Change 12 SPK_ENA (rw) 0b SPKMIX Mixer, Speaker PGA and Speaker Output Enable 0 = disabled 1 = enabled 11 OUT3_ENA (rw) 0b OUT3 and OUT3MIX Enable 0 = disabled 1 = enabled 10 OUT4_ENA (rw) 0b OUT4 and OUT4MIX Enable 0 = disabled 1 = enabled 9 LOUT_ENA (rw) 0b LOUT (Left Headphone Output) Enable 0 = disabled 1 = enabled 8 ROUT_ENA (rw) 0b ROUT (Right Headphone Output) Enable 0 = disabled 1 = enabled 7:5 000b Reserved - Do Not Change 4 MICBIAS_ENA (rw) 0b MICBIAS Enable 0 = OFF (high impedance output) 1 = ON 3 0b Reserved - Do Not Change 2:1 VMID_MODE [1:0] (rw) 00b Vmid Divider Enable and Select 00 = Vmid disabled (for OFF mode) 01 = 2 x 50k Ω divider (Normal mode) 10 = 2 x 250k Ω divider (Standby mode) 11 = 2 x 5k Ω divider (for fast start-up) R1 (01h) Power Management (1) 0 VREF_ENA (rw) 0b VREF Enable (Bias for all analogue functions) 0 = VREF bias disabled 1 = VREF bias enabled 15 PLL_ENA (rw) 0b PLL Enable 0 = disabled 1 = enabled 14 TSHUT_ENA (rw) 1b Thermal Sensor Enable 0 = Thermal sensor disabled 1 = Thermal sensor enabled 13 TSHUT_OPDIS (rw) 1b Thermal Shutdown Enable (Requires thermal sensor to be enabled) 0 = Thermal shutdown disabled 1 = Thermal shutdown enabled 12 0b Reserved - Do Not Change 11 OPCLK_ENA (rw) 0b GPIO Clock Output Enable 0 = disabled 1 = enabled R02 (02h) Power Management (2) 10 0b Reserved - Do Not Change |
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