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TMS320VC5410 数据表(PDF) 46 Page - Texas Instruments |
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TMS320VC5410 数据表(HTML) 46 Page - Texas Instruments |
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46 / 79 page ![]() TMS320VC5410 FIXEDPOINT DIGITAL SIGNAL PROCESSOR SPRS075D – OCTOBER 1998 – REVISED MAY 2000 46 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 memory and parallel I/O interface timing (continued) memory write switching characteristics over recommended operating conditions (MSTRB = 0) [H = 0.5 tc(CO)]† (see Figure 19) PARAMETER ’VC5410-100 ’VC5410-120 UNIT PARAMETER MIN MAX MIN MAX UNIT td(CLKL-A) Delay time, CLKOUT low to address valid – 1 4 – 1 6 ns tsu(A)MSL Setup time, address valid before MSTRB low 2H – 5 2H – 5 ns td(CLKL-D)W Delay time, CLKOUT low to data valid 0 5 0 7 ns tsu(D)MSH Setup time, data valid before MSTRB high 2H – 5 2H + 5 2H – 5 ns th(D)MSH Hold time, data valid after MSTRB high 2H – 5 2H + 5 2H – 5 ns td(CLKL-MSL) Delay time, CLKOUT low to MSTRB low – 1 4 – 1 6 ns tw(SL)MS Pulse duration, MSTRB low 2H – 5 2H – 5 ns td(CLKL-MSH) Delay time, CLKOUT low to MSTRB high – 1 4 – 1 6 ns † Address, R/W, PS, DS, and IS timings are all included in timings referenced as address. td(CLKL-MSH) td(CLKL-A) CLKOUT A[22:0] D[15:0] MSTRB R/W PS/DS tsu(A)MSL td(CLKL-D)W tsu(D)MSH th(D)MSH tw(SL)MS td(CLKL-MSL) Figure 19. Memory Write (MSTRB = 0) PRODUCT PREVIEW information concerns products in the formative or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice. |
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