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DM385 Datasheet(PDF) 170 Page - Texas Instruments |
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DM385 Datasheet(HTML) 170 Page - Texas Instruments |
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170 / 281 page  5 6 8 7 TCK RTCK 3 TCK TDO TDI/TMS 2 4 1 1a 1b DM385, DM388 SPRS821D – MARCH 2013 – REVISED DECEMBER 2013 www.ti.com Figure 8-6. JTAG Timing Table 8-8. Timing Requirements for IEEE 1149.1 JTAG With RTCK (see Figure 8-6) OPP100/OPP120/ Turbo/Nitro NO. UNIT MIN MAX 1 tc(TCK) Cycle time, TCK 59 ns 1a tw(TCKH) Pulse duration, TCK high (40% of tc) 23.6 ns 1b tw(TCKL) Pulse duration, TCK low (40% of tc) 23.6 ns 3 tsu(TDI-TCK) Input setup time, TDI valid to TCK high (20% of (tc * 0.5)) 5.9 ns 3 tsu(TMS-TCK) Input setup time, TMS valid to TCK high (20% of (tc * 0.5)) 5.9 ns th(TCK-TDI) Input hold time, TDI valid from TCK high 29.5 ns 4 th(TCK-TMS) Input hold time, TMS valid from TCK high 29.5 ns Table 8-9. Switching Characteristics Over Recommended Operating Conditions for IEEE 1149.1 JTAG With RTCK (see Figure 8-7) OPP100/OPP120/ Turbo/Nitro NO. PARAMETER UNIT MIN MAX Delay time, TCK to RTCK with no selected subpaths (that is, 5 td(TCK-RTCK) ICEPick is the only tap selected - when the ARM is in the scan 0 24 ns chain, the delay time is a function of the ARM functional clock.) 6 tc(RTCK) Cycle time, RTCK 59 ns 7 tw(RTCKH) Pulse duration, RTCK high (40% of tc) 23.6 ns 8 tw(RTCKL) Pulse duration, RTCK low (40% of tc) 23.6 ns Figure 8-7. JTAG With RTCK Timing 170 Peripheral Information and Timings Copyright © 2013, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: DM385 DM388 |
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