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ADMC401 Folha de dados(PDF) 6 Page - Analog Devices |
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ADMC401 Folha de dados(HTML) 6 Page - Analog Devices |
6 / 60 page REV. B ADMC401 –6– Parameter Min Max Unit Interrupts and Flags Timing Requirements: t IFS IRQx or FI Setup before CLKOUT Low1, 2, 3 0.25t CK + 15 ns t IFH IRQx or FI Hold after CLKOUT High1, 2, 3 0.25t CK ns Switching Characteristics: t FOH Flag Output Hold after CLKOUT Low 4 0.5t CK – 7 ns t FOD Flag Output Delay from CLKOUT Low 4 0.5t CK + 5 ns NOTES 1If IRQx and FI inputs meet t IFS and tIFH setup/hold requirements, they will be recognized during the current clock cycle; otherwise the signals will be recognized on the following cycle. (Refer to “Interrupt Controller Operation” in the Program Control chapter of the ADSP-2100 Family User’s Manual, Third Edition for further information on interrupt servicing.) 2Edge-sensitive interrupts require pulsewidths greater than 10 ns; level-sensitive interrupts must be held low until serviced. 3 IRQx = IRQ0 and IRQ1. 4Flag Output = FL1 and FO. CLKOUT FLAG OUTPUTS IRQx FI tFOH tIFH tIFS tFOD Figure 2. Interrupts and Flags |
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