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AM69AX Datasheet(PDF) 266 Page - Texas Instruments |
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AM69AX Datasheet(HTML) 266 Page - Texas Instruments |
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266 / 299 page  1. The JTAG signals are split across two IO power domains on the device. Timings parameters defined in this table only apply when the two IO power domains are operating at the same voltage. Values for these timing parameters are not defined when operating the two IO power domains at different voltages since propagation delay through the device IO buffers differ when some are operating at 1.8V while others are operating at 3.3V. This effectively reduces timing margin beyond the values defined in this table. The JTAG interface is still expected to function when the two IO power domains are operated at different voltages, assuming the system designer has implemented appropriate level shifters and the operating frequency is reduced to accommodate additional delay inserted by the level-shifters and IO buffers operating at different voltages. TDO J2 J1 J4 TCK J5 TDI / TMS J3 J6 J7 J4 J5 Figure 7-112. JTAG Timing Requirements and Switching Characteristics AM69A SPRSP92 – FEBRUARY 2023 www.ti.com 266 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated Product Folder Links: AM69A |
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