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ES9219C датащи(PDF) 37 Page - ESS Technology,Inc |
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ES9219C датащи(HTML) 37 Page - ESS Technology,Inc |
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37 / 67 page ![]() ES9219 Datasheet CONFIDENTIAL ADVANCE INFORMATION 1.0.4 February 27, 2020 37 ESS TECHNOLOGY, INC. 237 South Hillview Drive, Milpitas, CA 95035, USA Tel (408) 643-8800 • Fax (408) 643-8801 Register 4: AUTOMUTE TIME I2C Slave Access: I2S Sync Slave Access: Clock Domain: Bits [7:0] Mnemonic AUTOMUTE_TIME Bits Mnemonic Description [7:0] AUTOMUTE_TIME Configures the amount of time the audio data must remain below the automute_level before an automute condition is flagged. Defaults to 0 which disables automute. Note: DATA_CLK should be provided with a unit of Hz ���������������� �������� ���������������������������� = 2096896 ������������������������������������������������ ∗ ���������������������������� Register 5: AUTOMUTE LEVEL I2C Slave Access: I2S Sync Slave Access: Clock Domain: Bits [7] [6:0] Mnemonic RESERVED AUTOMUTE_LEVEL Bits Mnemonic Description [7] RESERVED NA [6:0] AUTOMUTE_LEVEL Configures the threshold which the audio must be below before an automute condition is flagged. The level is measured in decibels (dB) and defaults to -104dB. Note: This register works in tandem with automute_time to create the automute condition. Register 6: DOP AND VOLUME RAMP RATE I2C Slave Access: I2S Sync Slave Access: Clock Domain: Bits [7:4] [3] [2:0] Mnemonic RESERVED DOP_ENABLE VOLUME_RATE Bits Mnemonic Description [7:4] RESERVED NA [3] DOP_ENABLE Selects whether the DSD over PCM (DoP) logic is enabled. 1’b0: disables the DoP logic (default). 1’b1: enables the DoP logic. [2:0] VOLUME_RATE Selects a volume ramp rate to use when transitioning between different volume levels. The volume ramp rate is measured in decibels per second (dB/s). ���������������� ( �������� ���� ) = 0.0078125 ∗ �������� 2(2−����������������������������������������) |
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