
DS33Z41 Quad IMUX Ethernet Mapper
Update-DR
A falling edge on JTCLK while in the
Select-IR-Scan
All test registers retain their previous state. The instruction register will remain unchanged during this state. With JTMS LOW, a rising edge on JTCLK moves the controller into the
Capture-IR
The
Shift-IR
In this state, the shift register in the instruction register is connected between JTDI and JTDO and shifts data one stage for every rising edge of JTCLK towards the serial output. The parallel register, as well as all test registers, remains at their previous states. A rising edge on JTCLK with JTMS HIGH will move the controller to the
Exit1-IR
A rising edge on JTCLK with JTMS LOW will put the controller in the
Pause-IR
Shifting of the instruction shift register is halted temporarily. With JTMS HIGH, a rising edge on JTCLK will put the controller in the
Exit2-IR
A rising edge on JTCLK with JTMS LOW will put the controller in the
Update-IR
The instruction code shifted into the instruction shift register is latched into the parallel output on the falling edge of JTCLK as the controller enters this state. Once latched, this instruction becomes the current instruction. A rising edge on JTCLK with JTMS held low will put the controller in the
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