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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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WM8940GEFL/V датащи(PDF) 76 Page - Wolfson Microelectronics plc |
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WM8940GEFL/V датащи(HTML) 76 Page - Wolfson Microelectronics plc |
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76 / 85 page  WM8940 Pre-Production w Pre-Production, Rev 3.0, February 2007 76 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION REFER TO 5:0 INPPGAVOL 010000 Input PGA volume 000000 = -12dB 000001 = -11.25db . 010000 = 0dB . 111111 = 35.25dB Input Signal Path 46 (2Eh) 15:0 0000h Reserved 15:9 00h Reserved 8 PGABOOST 0 Input Boost 0 = PGA output has +0dB gain through input BOOST stage. 1 = PGA output has +20dB gain through input BOOST stage. Input Signal Path 7 0 Reserved 6:4 MICP2BOOSTVOL 000 Controls the MICP pin to the input boost stage (NB, when using this path set MICP2INPPGA=0): 000=Path disabled (disconnected) 001=-12dB gain through boost stage 010=-9dB gain through boost stage … 111=+6dB gain through boost stage Input Signal Path 3 0 Reserved 47 (2Fh) 2:0 AUX2BOOSTVOL 000 Controls the auxiliary amplifier to the input boost stage: 000=Path disabled (disconnected) 001=-12dB gain through boost stage 010=-9dB gain through boost stage … 111=+6dB gain through boost stage Input Signal Path 48 (30h) 15:0 0000h Reserved 15:2 0000h Reserved 1 TSDEN 1 Thermal Shutdown Enable 0 : thermal shutdown disabled 1 : thermal shutdown enabled Output Switch 49 (31h) 0 VROI 0 VREF (AVDD/2 or 1.5xAVDD/2) to analogue output resistance 0: approx 1k Ω 1: approx 30 k Ω uthorize Analogue Outputs 15:6 000h Reserved 5 AUX2SPK 0 Output of auxiliary amplifier to speaker mixer input 0 = not selected 1 = selected Analogue Outputs 4:2 000 Reserved 1 BYP2SPK 0 Bypass path (output of input boost stage) to speaker mixer input 0 = not selected 1 = selected Analogue Outputs 50 (32h) 0 DAC2SPK 0 Output of DAC to speaker mixer input 0 = not selected 1 = selected Analogue Outputs 51 (33h) 15:0 0000h Reserved 52 (34h) 15:0 0000h Reserved 53 (35h) 15:0 0000h Reserved |
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