參數(shù)資料
型號: DS21FT42
元件分類: 通信及網(wǎng)絡(luò)
英文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
中文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
文件頁數(shù): 104/145頁
文件大?。?/td> 466K
代理商: DS21FT42
DALLAS SEMICONDUCTOR
DS21FF42/DS21FT42
101899
/104
the device and 4 bits for the version. See Table 23-2. Table 23-3 lists the device ID codes
for the DS21Q42 and DS21Q44 devices.
ID Code Structure
Table 23-2
MSB
LSB
Contents
Version
(Contact Factory)
Device ID
(See Table 23-3)
JEDEC
“00010100001”
“1”
Length
4 bits
16bits
11bits
1bit
Device ID Codes
Table 23-3
DEVICE
DS21Q42
DS21Q44
16-BIT NUMBER
0000h
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
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS21FT42N 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 4x4 16/4x3 12 Chnl T1/T1 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
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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
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