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TNETV1002IDZHK 데이터시트(PDF) 68 Page - Texas Instruments |
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TNETV1002IDZHK 데이터시트(HTML) 68 Page - Texas Instruments |
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68 / 102 page ![]() Electrical Specifications 58 June 2001 -- Revised December 2002 SPRS180C 6.7 Ready Timing for Externally Generated Wait-States Table 6--12 assumes testing over recommended operating conditions and H = 0.5tc(CO) (see Figure 6--8, through Figure 6--11). Table 6--12. Ready Timing For Externally Generated Wait-States Timing Requirements† MIN MAX UNIT tsu(RDY) Setup time, DSP_READY before DSP_CLKOUT low 5 ns th(RDY) Hold time, DSP_READY after DSP_CLKOUT low 3 ns tv(RDY)MSTRB Valid time, DSP_READY after DSP_MSTRB low‡ 4H--11 ns th(RDY)MSTRB Hold time, DSP_READY after DSP_MSTRB low‡ 4H ns tv(RDY)DSP_IOSTRB Valid time, DSP_READY after DSP_IOSTRB low‡ 5H--11 ns th(RDY)DSP_IOSTRB Hold time, DSP_READY after DSP_IOSTRB low‡ 5H ns tv(MSCL) Valid time, DSP_MSC low after DSP_CLKOUT low 1.5 11.5 ns tv(MSCH) Valid time, DSP_MSC high after DSP_CLKOUT low 1.5 11.5 ns † The hardware wait-states can be used only in conjunction with the software wait-states to extend the bus cycles. To generate wait-states using DSP_READY, at least two software wait-states must be programmed. ‡ These timings are included for reference only. The critical timings for DSP_READY are those referenced to DSP_CLKOUT. DSP_MSC DSP_MSTRB DSP_READY DSP_A[19:0] DSP_CLKOUT tv(MSCH) tv(MSCL) th(RDY) th(RDY)MSTRB tv(RDY)MSTRB Wait State Generated by DSP_READY Wait-States Generated Internally tsu(RDY) Figure 6--8. Memory Read With Externally Generated Wait-States |
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