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OMAP3530ECUS 数据表(PDF) 217 Page - Texas Instruments |
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OMAP3530ECUS 数据表(HTML) 217 Page - Texas Instruments |
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217 / 264 page  mmx_txen_n mmx_txdat mmx_txse0 mmx_rxrcv FSU16 FSU14 FSU15 FSU10 FSU10 FSU11 FSU11 FSU12 FSU13 FSU17 FSU18 Transmit Receive 030-081 6.6.3.3 Multiport Full-Speed Universal Serial Bus (USB) – Bidirectional Standard 3-pin Mode OMAP3530/25 Applications Processor www.ti.com SPRS507F – FEBRUARY 2008 – REVISED OCTOBER 2009 Table 6-82. Low-/Full-Speed USB Switching Characteristics – Bidirectional Standard 4-pin Mode (continued) NO. PARAMETER 1.15 V 1.0 V UNIT MIN MAX MIN MAX FSU18 td(SE0V-TXENH) Delay time, mmx_txse0 invalid before mmx_txen_n 81.8 81.8 ns high tR(txen) Rise time, mmx_txen_n 4.0 4.0 ns tF(txen) Fall time, mmx_txen_n 4.0 4.0 ns tR(dat) Rise time, mmx_txdat 4.0 4.0 ns tF(dat) Fall time, mmx_txdat 4.0 4.0 ns tR(se0) Rise time, mmx_txse0 4.0 4.0 ns tF(se0) Fall time, mmx_txse0 4.0 4.0 ns In mmx, x is equal to 0, 1, or 2. Figure 6-44. Low-/Full-Speed USB – Bidirectional Standard 4-pin Mode Table 6-84 and Table 6-85 assume testing over the recommended operating conditions below (see Figure 6-45). Table 6-83. Low-/Full-Speed USB Timing Conditions – Bidirectional Standard 3-pin Mode TIMING CONDITION PARAMETER VALUE UNIT Input Conditions tR Input signal rise time 2.0 ns tF Input signal fall time 2.0 ns Output Conditions CLOAD Output load capacitance 15.0 pF Table 6-84. Low-/Full-Speed USB Timing Requirements – Bidirectional Standard 3-pin Mode NO. PARAMETER 1.15 V 1.0 V UNIT MIN MAX MIN MAX FSU19 td(DAT,SE0) Time duration, mmx_txdat and mmx_txse0 low together 14.0 14.0 ns during transition FSU20 td(DAT,SE0) Time duration, mmx_tsdat and mmx_txse0 high 8.0 8.0 ns together during transition Submit Documentation Feedback TIMING REQUIREMENTS AND SWITCHING CHARACTERISTICS 217 |
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