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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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FDA903U датащи(PDF) 28 Page - STMicroelectronics |
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FDA903U датащи(HTML) 28 Page - STMicroelectronics |
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28 / 80 page  Muting function architecture FDA903U 28/80 DS12498 Rev 2 7 Muting function architecture FDA903U uses a mixed signal approach for muting function. Muting function is activated by different "mute command signal": “High voltage mute”: active when Vcc enters in a voltage window over the max voltage; the window is specified in the electrical parameters table. “Low Battery mute”: active when Vcc enters in a voltage window under the min voltage; the window is specified in the electrical parameters table. “Hardware mute”: active when HWMute pin enters in the voltage window specified in the electrical parameters table. Thermal mute”: active when temperature enters in the temperature window over the max temperature; the window is specified in the electrical parameters table. “I2C Mute”: active user select mute/play I2C bits. The mute is achieved by the combination of two separated actuators, “Analog-mute” and “Digital-mute”. 7.1 Command dependence Based on the mute command signal, the analog and digital mute actuators activation could be different. This is described in the following table: Table 7. Command dependence Command signal When? Mute Unmute Low Battery mute When Vcc enters inside the low battery mute window Mixed mute. Analog & Digital, at the same time (1) 1. User can decide to disable Digital-Mute/Unmute using bit IB13-d6; in this case in all the conditions, (except I2C Mute), the Mute/Unmute will be purely Analog. Digital (1) High Voltage mute When Vcc enters inside the high voltage mute window Mixed mute. Analog & Digital, at the same time (1) Digital (1) Thermal Mute When temperature enters inside thermal mute window Analog Analog Hardware Mute When hardware pin voltage enters inside its mute window Mixed mute. Analog & Digital, at the same time(1) Digital (1) I2C Mute When I2C mute bits are selected Digital Digital |
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