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MSM9802 数据表(PDF) 17 Page - OKI electronic componets |
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MSM9802 数据表(HTML) 17 Page - OKI electronic componets |
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17 / 52 page ![]() 17/51 MSM9802/03/05-xxx ¡ Semiconductor A2, A1 A0, SW2 to SW0 Phrase (Sample) 00 0001 0010 0011 0100 1111 Hit Hit Hit Out Out 01 0001 0010 0011 0100 1111 Hit Out Out Out Out 10 0001 0010 0011 0100 1111 White Black Red Blue Green 11 0001 1111 Table 3.2 Random Playback Address For a random address, 15 phrases can be set for each logical condition of addresses A2 and A1 (i.e., "00", "01", "10", and "11"). In random playback, the four logic states ("000000", "010000", "100000" and "110000") in user- specified phrases cannot be used. Take it into consideration when creating ROM data. A random address is set by the "H" level time of the RND pin, so if the same pulse width is input by microcontroller, the random address fixed time becomes constant, and a random phrase may not be played under these conditions. The random address fixed time must be inconsistent in order to produce random playback. Figure 3.4 Timing when a Pulse is Input to the RND Pin During Random Playback RND (I) BUSY (O) Invalid pulse Pulse input during this time period is invalid AOUT (O) Oscillation start |
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