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AM68AX Datasheet(PDF) 230 Page - Texas Instruments |
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AM68AX Datasheet(HTML) 230 Page - Texas Instruments |
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230 / 251 page  For more details about features and additional description information on the device Universal Serial Bus Subsystem (USB), see the corresponding sections within Signal Descriptions and Detailed Description. 7.10.6 Emulation and Debug 7.10.6.1 Trace Table 7-92. Trace Timing Conditions PARAMETER MIN MAX UNIT OUTPUT CONDITIONS CL Output load capacitance 2 5 pF PCB CONNECTIVITY REQUIREMENTS td(Trace Mismatch) Propagation delay mismatch across all traces 200 ps Table 7-93 and Figure 7-111 assume testing over the recommended operating conditions and electrical characteristic conditions. Table 7-93. Trace Switching Characteristics NO. PARAMETER MIN MAX UNIT 1.8 V Mode DBTR1 tc(TRC_CLK) Cycle time, TRC_CLK 6.50 ns DBTR2 tw(TRC_CLKH) Pulse width, TRC_CLK high 2.50 ns DBTR3 tw(TRC_CLKL) Pulse width, TRC_CLK low 2.50 ns DBTR4 tosu(TRC_DATAV-TRC_CLK) Output setup time, TRC_DATA valid to TRC_CLK edge 0.81 ns DBTR5 toh(TRC_CLK-TRC_DATAI) Output hold time, TRC_CLK edge to TRC_DATA invalid 0.81 ns DBTR6 tosu(TRC_CTLV-TRC_CLK) Output setup time, TRC_CTL valid to TRC_CLK edge 0.81 ns DBTR7 toh(TRC_CLK-TRC_CTLI) Output hold time, TRC_CLK edge to TRC_CTL invalid 0.81 ns 3.3 V Mode DBTR1 tc(TRC_CLK) Cycle time, TRC_CLK 9.75 ns DBTR2 tw(TRC_CLKH) Pulse width, TRC_CLK high 4.13 ns DBTR3 tw(TRC_CLKL) Pulse width, TRC_CLK low 4.13 ns DBTR4 tosu(TRC_DATAV-TRC_CLK) Output setup time, TRC_DATA valid to TRC_CLK edge 1.22 ns DBTR5 toh(TRC_CLK-TRC_DATAI) Output hold time, TRC_CLK edge to TRC_DATA invalid 1.22 ns DBTR6 tosu(TRC_CTLV-TRC_CLK) Output setup time, TRC_CTL valid to TRC_CLK edge 1.22 ns DBTR7 toh(TRC_CLK-TRC_CTLI) Output hold time, TRC_CLK edge to TRC_CTL invalid 1.22 ns TRC_DATA TRC_CTL TRC_CLK ( ) ( ) (Ideal) Worst Case 1 Worst Case 2 DBTR1 DBTR2 DBTR3 DBTR4 DBTR6 DBTR5 DBTR7 DBTR4 DBTR6 DBTR5 DBTR7 SPRSP08_Debug_01 Figure 7-111. Trace Switching Characteristics 7.10.6.2 JTAG For more details about features and additional description information on the device IEEE 1149.1 Standard– Test–Access Port, see the corresponding sections within Signal Descriptions and Detailed Description. AM68A SPRSP91 – FEBRUARY 2023 www.ti.com 230 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated Product Folder Links: AM68A |
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