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TDA2SA Datasheet(PDF) 326 Page - Texas Instruments |
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TDA2SA Datasheet(HTML) 326 Page - Texas Instruments |
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326 / 427 page  3 TCK TDO TDI/TMS 2 4 1 1a 1b JTAG_01 326 TDA2SX, TDA2SG, TDA2SA TDA2HG, TDA2HV, TDA2HF, TDA2LF SPRS951F – DECEMBER 2015 – REVISED MAY 2019 www.ti.com Submit Documentation Feedback Product Folder Links: TDA2SX TDA2SG TDA2SA TDA2HG TDA2HV TDA2HF TDA2LF Timing Requirements and Switching Characteristics Copyright © 2015–2019, Texas Instruments Incorporated Table 7-134. Timing Requirements for IEEE 1149.1 JTAG (continued) NO. PARAMETER DESCRIPTION MIN MAX UNIT 3 tsu(TDI-TCK) Input setup time, TDI valid to TCK high 6.23 ns tsu(TMS-TCK) Input setup time, TMS valid to TCK high 6.23 ns 4 th(TCK-TDI) Input hold time, TDI valid from TCK high 31.15 ns th(TCK-TMS) Input hold time, TMS valid from TCK high 31.15 ns Table 7-135. Switching Characteristics Over Recommended Operating Conditions for IEEE 1149.1 JTAG NO. PARAMETER DESCRIPTION MIN MAX UNIT 2 td(TCKL-TDOV) Delay time, TCK low to TDO valid 0 30.5 ns Figure 7-85. JTAG Timing Table 7-136, Table 7-137 and Figure 7-86 assume testing over the recommended operating conditions and electrical characteristic conditions below. Table 7-136. Timing Requirements for IEEE 1149.1 JTAG With RTCK NO. PARAMETER DESCRIPTION MIN MAX UNIT 1 tc(TCK) Cycle time, TCK 62.29 ns 1a tw(TCKH) Pulse duration, TCK high (40% of tc) 24.92 ns 1b tw(TCKL) Pulse duration, TCK low (40% of tc) 24.92 ns 3 tsu(TDI-TCK) Input setup time, TDI valid to TCK high 6.23 ns tsu(TMS-TCK) Input setup time, TMS valid to TCK high 6.23 ns 4 th(TCK-TDI) Input hold time, TDI valid from TCK high 31.15 ns th(TCK-TMS) Input hold time, TMS valid from TCK high 31.15 ns Table 7-137. Switching Characteristics Over Recommended Operating Conditions for IEEE 1149.1 JTAG With RTCK NO. PARAMETER DESCRIPTION MIN MAX UNIT 5 td(TCK-RTCK) Delay time, TCK to RTCK with no selected subpaths (ICEPick is the only tap selected - when the Arm is in the scan chain, the delay time is a function of the Arm functional clock). 0 27 ns 6 tc(RTCK) Cycle time, RTCK 62.29 ns 7 tw(RTCKH) Pulse duration, RTCK high (40% of tc) 24.92 ns 8 tw(RTCKL) Pulse duration, RTCK low (40% of tc) 24.92 ns |
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