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TMS320VC5416 Datasheet(PDF) 67 Page - Texas Instruments |
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TMS320VC5416 Datasheet(HTML) 67 Page - Texas Instruments |
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67 / 98 page ![]() www.ti.com 5.5.5 Ready Timing for Externally Generated Wait States TMS320VC5416 Fixed-Point Digital Signal Processor SPRS095O – MARCH 1999 – REVISED JANUARY 2005 Table 5-13 and Table 5-14 assume testing over recommended operating conditions and H = 0.5tc(CO) (see Figure 5-10, Figure 5-11, Figure 5-12, and Figure 5-13). Table 5-13. Ready Timing Requirements for Externally Generated Wait States (1) 5416-120 5416-160 UNIT MIN MAX tsu(RDY) Setup time, READY before CLKOUT low 7 ns th(RDY) Hold time, READY after CLKOUT low 0 ns tv(RDY)MSTRB Valid time, READY after MSTRB low(2) 4H – 4 ns th(RDY)MSTRB Hold time, READY after MSTRB low(2) 4H ns tv(RDY)IOSTRB Valid time, READY after IOSTRB low(2) 4H – 4 ns th(RDY)IOSTRB Hold time, READY after IOSTRB low(2) 4H ns (1) The hardware wait states can be used only in conjunction with the software wait states to extend the bus cycles. To generate wait states by READY, as least two software wait states must be programmed. READY is not sampled until the completion of the internal software wait states. (2) These timings are included for reference only. The critical timings for READY are those referenced to CLKOUT. Table 5-14. Ready Switching Characteristics for Externally Generated Wait States (1) 5416-120 5416-160 PARAMETER UNIT MIN MAX td(MSCL) Delay time, CLKOUT low to MSC low 0 4 ns td(MSCH) Delay time, CLKOUT low to MSC high 0 4 ns (1) The hardware wait states can be used only in conjunction with the software wait states to extend the bus cycles. To generate wait states by READY, as least two software wait states must be programmed. READY is not sampled until the completion of the internal software wait states. 67 Electrical Specifications |
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