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PCM1720E Datasheet(PDF) 10 Page - Texas Instruments |
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PCM1720E Datasheet(HTML) 10 Page - Texas Instruments |
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10 / 17 page  ® PCM1720 10 feature is used to avoid noise which may occur when the input is DC. When the output is forced to bipolar zero, there may be an audible click. PCM1720 allows the zero detect feature to be disabled so the user can implement external muting circuit. When IZD is “LOW”, the zero detect circuit is off. Under this condition, no automatic muting will occur if the input is continuously zero. When IZD is “HIGH”, the zero detect feature is enabled. If the input data is continuously zero for 65, 536 cycles of BCKIN, the output will be immediately forced to a bipolar zero state (V CC/2). The zero detection FIGURE 5. Serial Interface Timing. B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0 ML (pin 4) MC (pin 5) MD (pin 6) FIGURE 6. Program Register Input Timing. 1.4V 1.4V 1.4V ML MC MD MC Pulse Cycle Time MC Pulse Width LOW MC Pulse Width HIGH MD Set-up Time MC Hold Time ML Low Level Time ML Set-up Time ML Hold Time : t MCY : t MCL : t MCH : t MDS : t MDH : t MLL : t MLS : t MLH : 100ns (min) : 50ns (min) : 50ns (min) : 30ns (min) : 30ns (min) : 30ns + 1SYSCLK (min) : 30ns (min) : 30ns (min) t MCY t MDS t MDH t MCH t MCL t MLS t MLH t MLL Not Recommended For New Designs |
Similar Part No. - PCM1720E |
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Similar Description - PCM1720E |
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