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AD1984 Arkusz danych(PDF) 7 Page - Analog Devices |
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AD1984 Arkusz danych(HTML) 7 Page - Analog Devices |
7 / 20 page AD1984 Rev. 0 | Page 7 of 20 | January 2007 HD–AUDIO LINK SPECIFICATION High-definition audio signals comply with the High-definition Audio specification. Please refer to these specifications at: http://www.intel.com/standards/hdaudio/ POWER DOWN STATES Parameter IDVDD Typ IAVDD Typ Unit Function node in D0, all nodes active 58 31 mA Function node in D31 1 Function node D3 state powers down all nodes except for the VREF, Mixer and MIC_BIAS nodes which have independent power controls. VREF should be kept active when background functions such as jack presence detection or analog pass-through are required. Mixer should be kept active when analog pass-through is required. MIC_BIAS can be disabled if microphones are not in use in the power-down state. 21 2 mA Codec in RESET 33mA Individual block power savings DAC pair powered down saves (each) ADC pair powered down saves (each) Mixer power control (and associated amps) saves DM_FLT pair powered down saves (each) DM_CLK powered down saves2 MIC_BIAS powered down saves3 2 Test conditions: 30 pF load, 2.0 MHz frequency, 3.3 V A VDD. 3 Powering down the MIC_BIAS powers down all port MIC_BIAS pins. This disables all microphone bias circuits set to 100% or 50%, setting them to the Hi-Z state. The 0 Ω and Hi-Z states remain unaffected by the MIC_BIAS power state. 6 5 0 5 0 0 5 3 2 0 1 0.5 mA mA mA mA mA mA |
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