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WM8945ECS/R 数据表(PDF) 142 Page - Wolfson Microelectronics plc |
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WM8945ECS/R 数据表(HTML) 142 Page - Wolfson Microelectronics plc |
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142 / 169 page  WM8945 Production Data w PD, May 2011, Rev 4.1 142 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION REFER TO R61 (3Dh) AuxADC Control 15 AUX_ENA 0 AUXADC Enable 0 = Disabled 1 = Enabled 14 AUX_CVT_EN A 0 AUXADC Conversion Enable 0 = Disabled 1 = Enabled In automatic mode, conversions are enabled by setting this bit. In manual mode (AUX_RATE = 0), setting this bit will initiate a conversion; the bit is reset automatically. 4:0 AUX_RATE [4:0] 0_0000 AUXADC Conversion Rate 0_0000 = Manual conversion 0_0001 = 16Hz 0_0010 = 32Hz …(16Hz steps) 1_1111 = 496Hz Register 3Dh AuxADC Control REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION REFER TO R62 (3Eh) AuxADC Source 8 AUX_BATT_ SEL 0 AUXADC Battery (SPKVDD) input select 0 = Disable Battery (SPKVDD) measurement 1 = Enable Battery (SPKVDD) measurement 1 AUX_AUX2_ SEL 0 AUXADC AUX2 input select 0 = Disable AUX2 measurement 1 = Enable AUX2 measurement 0 AUX_AUX1_ SEL 0 AUXADC AUX1 input select 0 = Disable AUX1 measurement 1 = Enable AUX1 measurement Register 3Eh AuxADC Source REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION REFER TO R63 (3Fh) AuxADC Config 9 AUX_AUX1_ FILTB 0 AUXADC Battery (SPKVDD) measurement filter control 0 = Disabled 1 = Enabled When AUX_AUX1_FILTB is set, the Battery (SPKVDD) measurement point is connected to the AUX1 pin, allowing an external capacitor to be used to filter noise. 8 AUX_BATT_ SCALE 1 AUXADC Battery (SPKVDD) measurement divider control 0 = 0.45 x SPKVDD (Note that 0.45 x 3.3V = 1.485V) 1 = 0.41 x SPKVDD (Note that 0.41 x 3.6V = 1.476V) 1 AUX_AUX2_ REF 0 AUXADC AUX2 reference select 0 = LDOVDD/2 1 = 1.5V (nominal) Bandgap 0 AUX_AUX1_ REF 0 AUXADC AUX1 reference select 0 = LDOVDD/2 1 = 1.5V (nominal) Bandgap Register 3Fh AuxADC Config |
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