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DF1706E/2K bảng dữ liệu(PDF) 7 Page - Texas Instruments |
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DF1706E/2K bảng dữ liệu(HTML) 7 Page - Texas Instruments |
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7 / 16 page ![]() DF1706 7 SBAS182 FIGURE 4. Audio Data Input Formats. 1 2 15 1/f S Lch Rch MSB LSB 16 LRCIN BCKIN AUDIO DATA WORD = 16-BIT D IN 1 2 15 MSB LSB 16 2 1 2 1 1 2 23 MSB LSB 24 AUDIO DATA WORD = 24-BIT D IN 1 2 23 MSB LSB 24 (c) I2S Data Format (Philips Format); L-Channel = LOW, R-Channel = HIGH 14 15 16 1 2 15 1/f S Lch Rch MSB LSB 16 LRCIN BCKIN AUDIO DATA WORD = 16-BIT (a) Standard Data Format; L-Channel = HIGH, R-Channel = LOW D IN 1 2 15 16 18 19 22 23 20 1 2 19 MSB LSB 20 AUDIO DATA WORD = 20-BIT D IN 1 2 19 20 24 1 2 23 MSB LSB 24 AUDIO DATA WORD = 24-BIT D IN 1 2 23 MSB LSB 24 AUDIO INPUT INTERFACE The audio input interface is comprised of BCKIN (pin 2), LRCIN (pin 28), and DIN (pin 1). BCKIN is the input bit clock, which is used to clock data applied at DIN into the DF1706’s input serial interface. Input data at DIN is clocked into the DF1706 on the rising edge of BCKIN. The left/right clock, LRCIN, is used as a word latch for the audio input data. BCKIN can run at 32fS, 48fS, or 64fS, where fS is the audio sample frequency. LRCIN is run at the fS rate. Figures 4 (a) through (c) show the input data formats, which are sel- ected by hardware or software controls. See Figure 5 for the audio input interface timing requirements. FIGURE 3. External Forces Reset Timing. 1024 system clocks Reset Reset Removal System Clock Internal Reset External Reset 1 2 3 22 23 1/f S Lch Rch MSB LSB 24 LRCIN BCKIN AUDIO DATA WORD = 24-BIT D IN 1 2 3 1 2 3 22 23 MSB LSB 24 (b) Left-Justified Format; L-Channel = HIGH, R-Channel = LOW |
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