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MPC8245 датащи(PDF) 30 Page - Freescale Semiconductor, Inc |
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MPC8245 датащи(HTML) 30 Page - Freescale Semiconductor, Inc |
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30 / 68 page ![]() MPC8245 Integrated Processor Hardware Specifications, Rev. 10 30 Freescale Semiconductor Electrical and Thermal Characteristics Figure 20 through Figure 23 show the different timing diagrams. Figure 20. JTAG Clock Input Timing Diagram Figure 21. JTAG TRST Timing Diagram Figure 22. JTAG Boundary Scan Timing Diagram 11 TMS, TDI data hold time 15 — ns 12 TCK to TDO data valid 0 15 ns 13 TCK to TDO high impedance 0 15 ns Notes: 1. TRST is an asynchronous signal. The setup time is for test purposes only. 2. Nontest (other than TDI and TMS) signal input timing with respect to TCK. 3. Nontest (other than TDO) signal output timing with respect to TCK. Table 15. JTAG AC Timing Specification (Independent of PCI_SYNC_IN) (continued) Num Characteristic Min Max Unit Notes TCK 2 2 1 VM VM VM 3 3 VM = Midpoint Voltage 4 5 TRST TCK 6 7 Input Data Valid 8 9 Output Data Valid TCK Data Inputs Data Outputs Data Outputs |
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