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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TMS320C6711 датащи(PDF) 73 Page - Texas Instruments |
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TMS320C6711 датащи(HTML) 73 Page - Texas Instruments |
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73 / 129 page  TMS320C6711, TMS320C6711B, TMS320C6711C, TMS320C6711D FLOATING-POINT DIGITAL SIGNAL PROCESSORS SPRS088L − FEBRUARY 1999 − REVISED MAY 2004 73 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 INPUT AND OUTPUT CLOCKS (CONTINUED) switching characteristics over recommended operating conditions for CLKOUT2†‡ (see Figure 25) [C6711C/C6711D] NO. PARAMETER GDPA-167 −200 −250 (6711D) UNIT MIN MAX 1 tc(CKO2) Cycle time, CLKOUT2 C2 − 0.8 C2 + 0.8 ns 2 tw(CKO2H) Pulse duration, CLKOUT2 high (C2/2) − 0.8 (C2/2) + 0.8 ns 3 tw(CKO2L) Pulse duration, CLKOUT2 low (C2/2) − 0.8 (C2/2) + 0.8 ns 4 tt(CKO2) Transition time, CLKOUT2 2 ns † The reference points for the rise and fall transitions are measured at VOL MAX and VOH MIN. ‡ C2 = CLKOUT2 period in ns. CLKOUT2 period is determined by the PLL controller output SYSCLK2 period, which must be set to CPU period divide-by-2. CLKOUT2 1 2 3 4 4 Figure 26. CLKOUT2 Timings switching characteristics over recommended operating conditions for CLKOUT3†§ (see Figure 27) [C6711C/C6711D only] NO. PARAMETER 11CGDPA-167 11C−200 11DGDPA-167 11D−200 −250 (6711D) UNIT MIN MAX MIN MAX 1 tc(CKO3) Cycle time, CLKOUT3 C3 − 0.6 C3 + 0.6 C3 − 0.9 C3 + 0.9 ns 2 tw(CKO3H) Pulse duration, CLKOUT3 high (C3/2) − 0.6 (C3/2) + 0.6 (C3/2) − 0.9 (C3/2) + 0.9 ns 3 tw(CKO3L) Pulse duration, CLKOUT3 low (C3/2) − 0.6 (C3/2) + 0.6 (C3/2) − 0.9 (C3/2) + 0.9 ns 4 tt(CKO3) Transition time, CLKOUT3 2 3 ns 5 td(CLKINH-CKO3V) Delay time, CLKIN high to CLKOUT3 valid 1.5 6.5 1.5 7.5 ns † The reference points for the rise and fall transitions are measured at VOL MAX and VOH MIN. ‡ C3 = CLKOUT3 period in ns. CLKOUT3 period is a divide-down of the CPU clock, configurable via the RATIO field in the PLLDIV3 register. CLKIN CLKOUT3 NOTE A: For this example, the CLKOUT3 frequency is CLKIN divide-by-2. 3 1 2 4 4 5 5 Figure 27. CLKOUT3 Timings [C6711C/C6711D Only] |
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