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SM8706 Arkusz danych(PDF) 6 Page - Nippon Precision Circuits Inc |
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SM8706 Arkusz danych(HTML) 6 Page - Nippon Precision Circuits Inc |
6 / 8 page SM8706A NIPPON PRECISION CIRCUITS—6 Sampling Frequency and Output Clock Frequency The SM8706A sampling frequency fs can be switched between 44.1kHz when FSEL (pin 14) is LOW, and 48kHz when FSEL is HIGH. The audio outputs (AO1 and AO2) are a 384fs and 768fs frequency clock, respec- tively, where fs is determined by the setting on FSEL. In addition, the signal processor outputs (SO1 and SO2) are a 16.9344MHz and 33.8688MHz frequency clock, respectively, derived from the master clock. The video outputs (MO1 and MO2) are a 27MHz and 54MHz frequency clock, respectively, derived from the master clock. When CE (Pin16) is HIGH, the chip is enabled. When LOW, the chip is disabled. When disabled, all output go LOW and all internal circuits stop operating. When CE goes LOW to HIGH, the chip moves from disabled to enabled, the time taken until the output frequency clocks stabilize is a maximum of 5ms. The SM8706A output clock frequencies that can be selected is shown in Table 1. The output clock response timing relative to the CE setting is shown in Figure 5. Table 1. Sampling frequency and output clock frequency (36.8640MHz master clock frequency) FSEL (Pin 14) Sampling frequency fs [kHz] CE (Pin 16) Output clock frequency [MHz] AO1 (Pin 9) AO2 (Pin 10) SO1 (Pin 13) SO2 (Pin 15) MO1 (Pin 3) MO2 (Pin 4) LOW 44.1 H 16.9344 33.8688 16.9344 33.8688 27.0000 54.0000 HIGH 48 18.4320 36.8640 16.9344 33.8688 27.0000 54.0000 LOW 44.1 LLLLLLL HIGH 48 Figure 5. CE switching response 5ms (max) SO1/SO2 MO1/MO2 AO1/AO2 CE |
Podobny numer części - SM8706 |
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Podobny opis - SM8706 |
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