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BM83 Folha de dados(PDF) 44 Page - Microchip Technology |
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BM83 Folha de dados(HTML) 44 Page - Microchip Technology |
44 / 74 page Figure 6-7. Timing Sequence of Power Drop Protection BAT_IN +4V RST_N from Reset IC Power BAT_IN BM83 Reset OUT VDD GND MCU Reset Reset IC 2.93V 2.7V Timing sequence of power drop protection: • It is recommended to use the battery to provide the power supply at BAT_IN in to the module. • If an external power source or a power adapter is utilized to provide power to the module (BAT_IN), it is recommended to use a voltage supervisor Integrated Circuit (IC). • The Reset IC output pin, RST_N, must be open drain type and threshold voltage as 2.93V. • The RST_N signal must be fully pulled low before BAT_IN power drop to 2.7V 6.2 I2S Interface The BM83 module provides an I2S digital audio input, output or input/output interface to connect with the external codec or DSP. It provides 8, 16, 44.1, 48, 88.2, and 96 kHz sampling rates for 16-bit and 24-bit data formats. The following are the BM83 module interface signals: • MCLK1 – Master Clock (BM83 output) • SCLK1– Serial/Bit Clock (BM83 input/output) • DR1 – Receive Data (BM83 input) • RFS1 – Receive Frame Sync (BM83 input/output) • DT1 – Transmit Data (BM83 output) Note: The I2S parameters can be configured by using the Config Tool. I2S supports the following modes: • Master mode – The BM83 serves as a master to provide clock and frame synchronous signals for the master/slave data synchronizations, as illustrated in the following figures. The MCLK1 is the master clock output provided to an external I2S device to drive its system clock and save crystal cost. The MCLK is optional and is not required if the external I2S device can drive its system clock on its own. BM83 Application Information © 2019 Microchip Technology Inc. Preliminary Datasheet DS70005402A-page 44 |
Nº de peça semelhante - BM83 |
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Descrição semelhante - BM83 |
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