參數(shù)資料
型號(hào)： DS26303L-75
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類(lèi)： 數(shù)字傳輸電路
英文描述： 3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit
中文描述： DATACOM, PCM TRANSCEIVER, PQFP144
封裝： 20 X 20 MM, 1.40 MM HEIGHT, MS-026, LQFP-144
文件頁(yè)數(shù)： 72/97頁(yè)
文件大小： 966K
代理商： DS26303L-75
DS26303: 3.3V, T1/E1/J1, Short-Haul, Octal Line Interface Unit
72 of 97
Update-DR
A falling edge on TCLK 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.
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 TCLK 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 TCLK 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 TCLK. If JTMS is HIGH on the rising edge of TCLK, the controller will enter the exit1-
IR state. If JTMS is LOW on the rising edge of TCLK, 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 TCLK towards the serial output. The parallel registers as well as all test registers
remain at their previous states. A rising edge on TCLK with JTMS HIGH will move the controller to the exit1-IR
state. A rising edge on TCLK 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 TCLK with JTMS LOW will put the controller in the pause-IR state. If JTMS is HIGH on the rising
edge of TCLK, 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 TCLK 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 TCLK.
Exit2-IR
A rising edge on TCLK with JTMS High will put the controller in the Update-IR state. The controller will loop back to
shift-IR if JTMS is LOW during a rising edge of TCLK in this state.
Update-IR
The instruction code shifted into the instruction shift register is latched into the parallel output on the falling edge of
TCLK as the controller enters this state. Once latched, this instruction becomes the current instruction. A rising
edge on TCLK 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.
相關(guān)PDF資料
PDF描述
DS26303LN-120 3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit
DS26303LN-75 3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit
DS26518 8-Port T1/E1/J1 Transceiver
DS26518G 8-Port T1/E1/J1 Transceiver
DS26518GN 8-Port T1/E1/J1 Transceiver
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS26303L-75+ 功能描述:電信線路管理 IC 3.3V E1/T1/J1 Short Haul Octal LIU RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類(lèi)型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
DS26303L-75+A3 功能描述:電信線路管理 IC 3.3V E1/T1/J1 Short Haul Octal LIU RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類(lèi)型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
DS26303L-75A3 功能描述:電信線路管理 IC 3.3V E1/T1/J1 Short Haul Octal LIU RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類(lèi)型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
DS26303LN-120 功能描述:電信線路管理 IC RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類(lèi)型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
DS26303LN-120+ 功能描述:電信線路管理 IC 3.3V E1/T1/J1 Short Haul Octal LIU RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類(lèi)型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
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