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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ACEX1 датащи(PDF) 44 Page - List of Unclassifed Manufacturers |
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ACEX1 датащи(HTML) 44 Page - List of Unclassifed Manufacturers |
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44 / 86 page  44 Altera Corporation ACEX 1K Programmable Logic Device Family Data Sheet Figure 20. ACEX 1K JTAG Waveforms Table 17 shows the timing parameters and values for ACEX 1K devices. TDO TCK tJPZX t JPCO tJPH t JPXZ tJCP tJPSU t JCL tJCH TDI TMS Signal to Be Captured Signal to Be Driven t JSZX tJSSU tJSH t JSCO tJSXZ Table 17. ACEX 1K JTAG Timing Parameters & Values Symbol Parameter Min Max Unit tJCP TCK clock period 100 ns tJCH TCK clock high time 50 ns tJCL TCK clock low time 50 ns tJPSU JTAG port setup time 20 ns tJPH JTAG port hold time 45 ns tJPCO JTAG port clock to output 25 ns tJPZX JTAG port high impedance to valid output 25 ns tJPXZ JTAG port valid output to high impedance 25 ns tJSSU Capture register setup time 20 ns tJSH Capture register hold time 45 ns tJSCO Update register clock to output 35 ns tJSZX Update register high impedance to valid output 35 ns tJSXZ Update register valid output to high impedance 35 ns |
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