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STA339BWS 데이터시트(PDF) 16 Page - STMicroelectronics |
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STA339BWS 데이터시트(HTML) 16 Page - STMicroelectronics |
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16 / 79 page ![]() Electrical specifications STA339BWS 16/79 DocID015276 Rev 9 3.6 Power on/off sequence Figure 4. Power-on sequence Note: The definition of a stable clock is when fmax - fmin < 1 MHz. Section Serial audio input interface format on page 27 gives information on setting up the I2S interface. Figure 5. Power-off sequence for pop-free turn-off Don’t care Don’t care CMD0 CMD1 CMD2 VCC VDD_Dig XTI Reset I2C PWDN TR TC Don’t care Don’t care CMD0 CMD1 CMD2 VCC VDD_Dig XTI Reset I2C PWDN TR TC Don’t care Don’t care Don’t care CMD0 CMD1 CMD2 VCC VDD_Dig XTI Reset I2C PWDN TR TC Don’t care Don’t care CMD0 CMD1 CMD2 VCC VDD_Dig XTI Reset I2C PWDN TR TC Don’t care Don’t care CMD0 CMD1 CMD2 VCC VDD_Dig XTI Reset I2C PWDN TR TC Don’t care Note: no specific VCC and VDD_DIG turn on sequence is required TR = minimum time between XTI master clock stable and Reset removal: 1 ms TC = minimum time between Reset removal and I2C program, sequence start: 1ms Don’t care VCC VDD_Dig XTI Don’t care Soft Mute Reg. 0x07 Data 0xFE Soft EAPD Reg. 0x05 Bit 7 = 0 Don’t care FE Don’t care Don’t care Don’t care VCC VDD_Dig XTI Don’t care Soft Mute Reg. 0x07 Data 0xFE Soft EAPD Reg. 0x05 Bit 7 = 0 Don’t care FE Don’t care Don’t care Note: no specific VCC and VDD_DIG turn off sequence is required |
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