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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LM2502 датащи(PDF) 25 Page - National Semiconductor (TI) |
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LM2502 датащи(HTML) 25 Page - National Semiconductor (TI) |
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25 / 27 page  Application Information (Continued) Figure 21 shows the typical timing of the RGB application. The 6X PLL setting (PLLCON[2:0] = 010’b) is selected. The PCLK is applied to both the WR* and CLK inputs on the Master. The rising edge on the WR* (PCLK) signal samples the data by the Master for serialization. The CLK input can be the PCLK (if timing requirements are met) or a synchro- nous clock to the PCLK signal. The HS connects to the CS1* signal and the HS* (inverted HS) is connected to the CS2*. With this configuration there will always be a valid CS* LOW on the Master input. The RGB information is then serialized and passed to the Slave via the MPL bus. It takes 5 MC cycles to complete the transfer and with the 6X PLL setting, there will be two idle bits on the MD (1 MC cycle) lines before the next transfer. Recovery of the RGB interface (RGB565, HS, VS and PCLK) is provided at the Slave output. The PCLK is slightly shifted later in time (1 MC cycle) but ad- equate timing margin (increased set, shorted hold) is still provided. 20093323 FIGURE 21. RGB565 Application Timing www.national.com 25 |
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