參數(shù)資料
型號： DS21Q44T
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)： 30/105頁
文件大?。?/td> 620K
代理商： DS21Q44T
DS21Q44
30 of 105
FRAMER LOOPBACK
When CCR1.7 is set to a one, the framer will enter a Framer LoopBack (FLB) mode. See Figure 1–1 for
more details. This loopback is useful in testing and debugging applications. In FLB, the framer will loop
data from the transmit side back to the receive side. When FLB is enabled, the following will occur:
1.
Data will be transmitted as normal at TPOS and TNEG.
2.
Data input via RPOS and RNEG will be ignored.
3.
The RCLK output will be replaced with the TCLK input.
CCR2: COMMON CONTROL REGISTER 2
(Address=1A Hex)
(MSB)
ECUS
(LSB)
RFE
VCRFS
AAIS
ARA
RSERC
LOTCMC
RFF
SYMBOL
POSITION
NAME AND DESCRIPTION
ECUS
CCR2.7
Error Counter Update Select.
See Section 8 for details.
0=update error counters once a second
1=update error counters every 62.5 ms (500 frames)
VCR Function Select.
See Section 8 for details.
0=count BiPolar Violations (BPVs)
1=count Code Violations (CVs)
Automatic AIS Generation.
0=disabled
1=enabled
Automatic Remote Alarm Generation.
0=disabled
1=enabled
RSER Control.
0=allow RSER to output data as received under all conditions
1=force RSER to one under loss of frame alignment conditions
Loss of Transmit Clock Mux Control.
Determines whether
the transmit side formatter should switch to the ever present
RCLK if the TCLK should fail to transition (see Figure 1–1).
0=do not switch to RCLK if TCLK stops
1=switch to RCLK if TCLK stops
Receive Force Freeze.
Freezes receive side signaling at RSIG
(and RSER if CCR3.3=1); will override Receive Freeze Enable
(RFE). See Section 10 or details.
0=do not force a freeze event
1=force a freeze event
Receive Freeze Enable.
See Section 10 for details.
0=no freezing of receive signaling data will occur
1=allow freezing of receive signaling data at RSIG (and RSER
if CCR3.3=1).
VCRFS
CCR2.6
AAIS
CCR2.5
ARA
CCR2.4
RSERC
CCR2.3
LOTCMC
CCR2.2
RFF
CCR2.1
RFE
CCR2.0
相關(guān)PDF資料
PDF描述
DS21Q44TN MICROSWITCH, SPDT, SIM ROLLER LEVER; Current, contact AC:5A; Force, operating:91.75gf; Travel, pre:16.0mm; Centres, fixing LxW:22.2mm; Temp, op. max:120(degree C); Temp, op. min:-40(degree C); Length / Height, external:9.25mm; Width, RoHS Compliant: Yes
DS2251T-128-16 CONNECTOR ACCESSORY
DS2251T-32-16 128k Soft Microcontroller Module
DS2251T-64-16 CONNECTOR ACCESSORY
DS2251 128k Soft Microcontroller Module
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS21Q44T+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Enhanced Quad 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
DS21Q44TN 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
DS21Q48 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 5V Quad E1/T1/J1 Line Interface 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
DS21Q48A3N 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 5V Quad E1/T1/J1 Line Interface 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
DS21Q48B 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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