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TMPR4956C Datasheet(PDF) 249 Page - Toshiba Semiconductor |
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TMPR4956C Datasheet(HTML) 249 Page - Toshiba Semiconductor |
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249 / 286 page  Chapter 14 JTAG Interface 14-11 • Exit 1-IR This is a temporary controller state. When the controller is in this state, then it moves to either the Pause-IR state if JTMS is held low, or the Update-IR state if JTMS is held high. • Pause-IR This state allows the shifting of the instruction register to be temporarily suspended. Both the instruction register and the data register retain their current states. When the controller is in this state, it remains in the Pause-IR state if JTMS is held low, or moves to the Exit2-IR state if JTMS is held high. • Exit 2-IR This is a temporary controller state. When the controller is in this state, it moves to either the Shift-IR state if JTMS is held low, or the Update-IR state if JTMS is held high. • Update-IR This state allows the instruction previously shifted into the instruction register to be output in parallel on the rising edge of JTCK. Then it becomes the current instruction, setting a new operational mode. When the controller is in this state, it moves to either the Run-Test/Idle state if JTMS is low, or the Select-DR-Scan state if JTMS is high. |
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