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ST5090 Arkusz danych(PDF) 11 Page - STMicroelectronics |
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ST5090 Arkusz danych(HTML) 11 Page - STMicroelectronics |
11 / 29 page Table 8: Control Register CR6 Functions 7 65432 10 Function Earpiece ampifier [EARA] Extra amplifier [EXTA] 0 0 - 1 0 0 - 1 0 0 - 1 0 1 - 1 0 dB gain -2 dB gain in 2 dB step -30 dB gain * 0 0 - 1 0 0 - 1 0 0 - 1 0 1 - 1 0 dB gain -2 dB gain in 2 dB step -30 dB gain * *: state at power on initialization Table 9: Control Register CR7 Functions 7 65432 10 Function Ton e gain F1 F2 SN DE Attenuation f1 Vpp f2 Vpp 0 0 0 0 0 0 0 0 1 1 0 0 0 0 1 1 1 1 X X 0 0 1 1 0 0 1 1 X X 0 1 0 1 0 1 0 1 0 1 ....0dB * -3 dB -6 dB -9 dB -12 dB -15 dB -18 dB -21 dB -24 dB -27 dB ...1.6(2) 0.066 1.26(2) 0.053 0 0 1 1 0 1 0 1 f1 and f2 muted f2 selected f1 selected f1 and f2 in summed mode * 0 1 Squarewave signal selected Sinewave signal selected * 0 1 Normal operation Tone / Ring Generator connected to Transmit path * *: state at power on initialization (2): value provided if f1 or f2 is selected alone. if f1 and f2 are selected in the summed mode, f1=0.89 Vpp while f2=0.7 Vpp. X reserved: write 0 Table 7: Control Register CR5 Functions 7 65432 10 Function Transmit amplifier Sidetone amplifier 0 0 - 1 0 0 - 1 0 0 - 1 0 1 - 1 0 dB gain 1.5 dB gain in 1.5 dB step 22.5 dB gain * 0 0 - 1 0 0 - 1 0 0 - 1 0 1 - 1 -12.5 dB gain -13.5 dB gain in 1 dB step -27.5 dB gain * *: state at power on initialization ST5090 11/29 |
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