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MNSC140CORE датащи(PDF) 51 Page - Freescale Semiconductor, Inc |
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MNSC140CORE датащи(HTML) 51 Page - Freescale Semiconductor, Inc |
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51 / 80 page ![]() AC Timings MSC8102 Quad Core Digital Signal Processor, Rev. 12 Freescale Semiconductor 2-21 2.5.12 JTAG Signals Table 2-23. JTAG Timing No. Characteristics All frequencies Unit Min Max 700 TCK frequency of operation (1/(T C × 3); maximum 22 MHz) 0.0 22.0 MHz 701 TCK cycle time 45.0 — ns 702 TCK clock pulse width measured at VM = 1.6 V 21.0 — ns 703 TCK rise and fall times 0.0 3.0 ns 704 Boundary scan input data set-up time 5.0 — ns 705 Boundary scan input data hold time 24.0 — ns 706 TCK low to output data valid 0.0 40.0 ns 707 TCK low to output high impedance 0.0 40.0 ns 708 TMS, TDI data set-up time 5.0 — ns 709 TMS, TDI data hold time 25.0 — ns 710 TCK low to TDO data valid 0.0 44.0 ns 711 TCK low to TDO high impedance 0.0 20.0 ns 712 TRST assert time 100.0 — ns 713 TRST set-up time to TCK low 40.0 — ns Note: All timings apply to OnCE module data transfers as the OnCE module uses the JTAG port as an interface. Figure 2-20. Test Clock Input Timing Diagram TCK (Input) VM VM VIH VIL 701 702 703 703 |
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