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OMAP3530ECBC 数据表(PDF) 164 Page - Texas Instruments |
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OMAP3530ECBC 数据表(HTML) 164 Page - Texas Instruments |
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164 / 264 page ![]() OMAP3530/25 Applications Processor SPRS507F – FEBRUARY 2008 – REVISED OCTOBER 2009 www.ti.com Table 6-6. GPMC/NOR Flash Interface Asynchronous Timing – Internal Parameters (continued) NO. PARAMETER 1.15 V 1.0 V 0.9 V UNIT MIN MAX MIN MAX MIN MAX FI4 Maximum address generation delay from internal 6.5 9.1 13.7 ns functional clock FI5 Maximum address valid generation delay from internal 6.5 9.1 13.7 ns functional clock FI6 Maximum byte enable generation delay from internal 6.5 9.1 13.7 ns functional clock FI7 Maximum output enable generation delay from internal 6.5 9.1 13.7 ns functional clock FI8 Maximum write enable generation delay from internal 6.5 9.1 13.7 ns functional clock FI9 Maximum functional clock skew 100 170 200 ps Table 6-7. GPMC/NOR Flash Interface Timing Requirements – Asynchronous Mode NO. PARAMETER 1.15 V 1.0 V 0.9 V UNIT MIN MAX MIN MAX MIN MAX FA5(1) tacc(DAT) Data maximum access H(2) H(2) H(2) GPMC_FCLK cycles time FA20(3) tacc1-pgmode(DAT) Page mode successive P(4) P(4) P(4) GPMC_FCLK cycles data maximum access time FA21(5) tacc2-pgmode(DAT) Page mode first data H(2) H(2) H(2) GPMC_FCLK cycles maximum access time (1) The FA5 parameter illustrates the amount of time required to internally sample input Data. It is expressed in number of GPMC functional clock cycles. From start of read cycle and after FA5 functional clock cycles, input Data is internally sampled by active functional clock edge. FA5 value must be stored inside the AccessTime register bit field. (2) H = AccessTime * (TimeParaGranularity + 1) (3) The FA20 parameter illustrates amount of time required to internally sample successive input Page Data. It is expressed in number of GPMC functional clock cycles. After each access to input Page Data, next input Page Data is internally sampled by active functional clock edge after FA20 functional clock cycles. The FA20 value must be stored in the PageBurstAccessTime register bit field. (4) P = PageBurstAccessTime * (TimeParaGranularity + 1) (5) The FA21 parameter illustrates amount of time required to internally sample first input Page Data. It is expressed in number of GPMC functional clock cycles. From start of read cycle and after FA21 functional clock cycles, First input Page Data is internally sampled by active functional clock edge. FA21 value must be stored inside the AccessTime register bit field. Table 6-8. GPMC/NOR Flash Interface Switching Characteristics – Asynchronous Mode NO. PARAMETER 1.15 V 1.0 V 0.9 V UNIT MIN MAX MIN MAX MIN MAX tR(DO) Rise time, output data 2.0 2.0 2.0 ns tF(DO) Fall time, output data 2.0 2.0 2.0 ns FA0 tW(nBEV) Pulse duration, Read N(12) N(12) N(12) ns gpmc_nbe0_cl Write N(12) N(12) N(12) ns e, gpmc_nbe1 valid time FA1 tW(nCSV) Pulse duration, Read A(1) A(1) A(1) ns gpmc_ncsx(13) Write A(1) A(1) A(1) ns v low FA3 td(nCSV-nADVIV) Delay time, Read B(2) – 0.2 B(2) + 2.0 B(2) – 0.2 B(2) + 2.6 B(2) – 0.2 B(2) + 3.7 ns gpmc_ncsx(13) Write B(2) – 0.2 B(2) + 2.0 B(2) – 0.2 B(2) + 2.6 B(2) – 0.2 B(2) + 3.7 ns valid to gpmc_nadv_al e invalid FA4 td(nCSV-nOEIV) Delay time, C(3) – 0.2 C(3) + 2.0 C(3) – 0.2 C(3) + 2.6 C(3) – 0.2 C(3) + 3.7 ns gpmc_ncsx(13) valid to gpmc_noe invalid (Single read) TIMING REQUIREMENTS AND SWITCHING CHARACTERISTICS 164 Submit Documentation Feedback |
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