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PSD813F1 датащи(PDF) 68 Page - STMicroelectronics |
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PSD813F1 датащи(HTML) 68 Page - STMicroelectronics |
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68 / 110 page ![]() PSD813F1 68/110 Input Control Signals The PSD provides the option to turn off the input control signals (CNTL0, CNTL1, CNTL2, ALE, and DBE) to the PLD to save AC power consumption. These control signals are inputs to the PLD AND array. During Power Down Mode, or, if any of them are not being used as part of the PLD logic equation, these control signals should be disabled to save AC power. They will be disconnected from the PLD AND array by setting bits 2, 3, 4, 5, and 6 to a ‘1’ in the PMMR2. Table 32. APD Counter Operation APD Enable Bit ALE PD Polarity ALE Level APD Counter 0 X X Not Counting 1 X Pulsing Not Counting 1 1 1 Counting (Generates PDN after 15 Clocks) 1 0 0 Counting (Generates PDN after 15 Clocks) |
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