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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MPC8349EVVALDB датащи(PDF) 42 Page - Freescale Semiconductor, Inc |
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MPC8349EVVALDB датащи(HTML) 42 Page - Freescale Semiconductor, Inc |
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42 / 87 page  MPC8349EA PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 13 42 Freescale Semiconductor JTAG 11.2 JTAG AC Timing Specifications This section describes the AC electrical specifications for the IEEE Std. 1149.1 (JTAG) interface of the MPC8349EA. Table 41 provides the JTAG AC timing specifications as defined in Figure 28 through Figure 31. Output low voltage VOL IOL = 8.0 mA — 0.5 V Output low voltage VOL IOL = 3.2 mA — 0.4 V Table 41. JTAG AC Timing Specifications (Independent of CLKIN)1 At recommended operating conditions (see Table 2). Parameter Symbol2 Min Max Unit Notes JTAG external clock frequency of operation fJTG 033.3 MHz — JTAG external clock cycle time t JTG 30 — ns — JTAG external clock pulse width measured at 1.4 V tJTKHKL 15 — ns — JTAG external clock rise and fall times tJTGR, tJTGF 02 ns — TRST assert time tTRST 25 — ns 3 Input setup times: Boundary-scan data TMS, TDI tJTDVKH tJTIVKH 4 4 — — ns 4 Input hold times: Boundary-scan data TMS, TDI tJTDXKH tJTIXKH 10 10 — — ns 4 Valid times: Boundary-scan data TDO tJTKLDV tJTKLOV 2 2 11 11 ns 5 Output hold times: Boundary-scan data TDO tJTKLDX tJTKLOX 2 2 — — ns 5 Table 40. JTAG Interface DC Electrical Characteristics (continued) Parameter Symbol Condition Min Max Unit |
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