參數(shù)資料
型號(hào)： DS2196LN
廠商： DALLAS SEMICONDUCTOR
元件分類： Digital Transmission Controller
英文描述： DATACOM, FRAMER, PQFP100
封裝： LQFP-100
文件頁數(shù)： 34/160頁
文件大?。?/td> 559K
代理商： DS2196LN
DS2196
129 of 160
Exit2-DR
While in this state, a rising edge on JTCLK with JTMS high will put the controller in the Update-DR state
and terminate the scanning process. A rising edge on JTCLK with JTMS low will enter the Shift-DR
state.
Update-DR
A falling edge on JTCLK while in the Update-DR state will latch the data from the shift register path of
the Test registers into the data output latches. This prevents changes at the parallel output due to changes
in the shift register. A rising edge on JTCLK with JTMS low, will put the controller in the Run-Test-Idle
state. With JTMS high, the controller will enter the Select-DR-Scan state.
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 of JTCLK moves the controller into the Capture-IR state and will
initiate a scan sequence for the Instruction register. JTMS high during a rising edge on JTCLK puts the
controller back into the Test-Logic-Reset state.
Capture-IR
The Capture-IR state is used to load the shift register in the instruction register with a fixed value. This
value is loaded on the rising edge of JTCLK. If JTMS is high on the rising edge of JTCLK, the controller
will enter the Exit1-IR state. If JTMS is low on the rising edge of JTCLK, the controller will enter the
Shift-IR state.
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 registers, as well as
all Test registers remain at their previous states. A rising edge on JTCLK with JTMS high will move the
controller to the Exit1-IR state. A rising edge on JTCLK with JTMS low will keep the controller in the
Shift-IR state while moving data one stage thorough the instruction shift register.
Exit1-IR
A rising edge on JTCLK with JTMS low will put the controller in the Pause-IR state. If JTMS is high on
the rising edge of JTCLK, the controller will enter the Update-IR state and terminate the scanning
process.
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 state. The controller will remain in the Pause-IR state if JTMS is
low during a rising edge on JTCLK.
Exit2-IR
A rising edge on JTCLK with JTMS low will put the controller in the Update-IR state. The controller
will loop back to Shift-IR if JTMS is high during a rising edge of JTCLK in this state.
相關(guān)PDF資料
PDF描述
DS21FF44 DATACOM, FRAMER, PBGA300
DS21FF44N DATACOM, FRAMER, PBGA300
DS21FT40N DATACOM, FRAMER, PBGA300
DS21FT40 DATACOM, FRAMER, PBGA300
DS21FT42 DATACOM, FRAMER, PBGA300
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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DS219T 功能描述:烙鐵 DESOLDERING HEAD RoHS:否 制造商:Weller 產(chǎn)品:Soldering Stations 類型:Digital, Iron, Stand, Cleaner 瓦特:50 W 最大溫度:+ 850 F 電纜類型:US Cord Included
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DS21E352N 功能描述:網(wǎng)絡(luò)控制器與處理器 IC RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
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