參數(shù)資料
          型號: DS21FT42N
          廠商: DALLAS SEMICONDUCTOR
          元件分類: Digital Transmission Controller
          英文描述: DATACOM, FRAMER, PBGA300
          封裝: 27 X 27 MM, BGA-300
          文件頁數(shù): 106/115頁
          文件大?。?/td> 534K
          代理商: DS21FT42N
          DS21FF42/DS21FT42
          90 of 115
          ID CODE STRUCTURE Table 23-2
          MSB
          LSB
          Contents
          Version
          (Contact Factory)
          Device ID
          (See Table 23-3)
          JEDEC
          “00010100001”
          “1”
          Length
          4 bits
          16 bits
          11 bits
          1 bit
          DEVICE ID CODES Table 23-3
          DEVICE
          16-BIT NUMBER
          DS21Q42
          0000h
          DS21Q44
          0001h
          Highz
          All digital outputs of the DS21Q42 will be placed in a high impedance state. The BYPASS register will
          be connected between JTDI and JTDO.
          Clamp
          All digital outputs of the DS21Q42 will output data from the boundary scan parallel output while
          connecting the bypass register between JTDI and JTDO. The outputs will not change during the CLAMP
          instruction.
          23.4 TEST REGISTERS
          IEEE 1149.1 requires a minimum of two test registers; the bypass register and the boundary scan register.
          An optional test register has been included with the DS21Q42 design.
          This test register is the
          identification register and is used in conjunction with the IDCODE instruction and the Test-Logic-Reset
          state of the TAP controller.
          Boundary Scan Register
          This register contains both a shift register path and a latched parallel output for all control cells and
          digital I/O cells and is 126 bits in length. Table 23-4 shows all of the cell bit locations and definitions.
          Bypass Register
          This is a single 1-bit shift register used in conjunction with the BYPASS, CLAMP, and HIGHZ
          instructions, which provides a short path between JTDI and JTDO.
          Identification Register
          The identification register contains a 32-bit shift register and a 32-bit latched parallel output.
          This
          register is selected during the IDCODE instruction and when the TAP controller is in the Test-Logic-
          Reset state.
          相關(guān)PDF資料
          PDF描述
          DS21FF42 DATACOM, FRAMER, PBGA300
          DS21FF42N DATACOM, FRAMER, PBGA300
          DS21FT44N DATACOM, FRAMER, PBGA300
          DS21FT44 DATACOM, FRAMER, PBGA300
          DS21Q352 DATACOM, PCM TRANSCEIVER, PBGA256
          相關(guān)代理商/技術(shù)參數(shù)
          參數(shù)描述
          DS21FT44 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
          DS21FT44+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 4X3 E1 Framer E1 Framer E1 Framer 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
          DS21FT44N 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 4x4 16/4x3 12 Chnl E1/E1 Framer 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
          DS21FT44N+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 4x4 16/4x3 12 Chnl E1/E1 Framer 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
          DS21Q348 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