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參數(shù)資料
| 型號(hào)： | DS21Q44TN |
| 英文描述： | 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 |
| 中文描述： | 增強(qiáng)的四素E1成幀器 |
| 文件頁(yè)數(shù)： | 31/105頁(yè) |
| 文件大?。?/td> | 620K |
| 代理商： | DS21Q44TN |
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DS21Q44
31 of 105
AUTOMATIC ALARM GENERATION
The DS21Q44 can be programmed to automatically transmit AIS or Remote Alarm. When automatic AIS
generation is enabled (CCR2.5 = 1), the framer monitors the receive side to determine if any of the
following conditions are present: loss of receive frame synchronization, AIS alarm (all one’s) reception,
or loss of receive carrier (or signal). If any one (or more) of the above conditions is present, then the
framer will transmit an AIS alarm.
When automatic RAI generation is enabled (CCR2.4 = 1), the framer monitors the receive side to
determine if any of the following conditions are present: loss of receive frame synchronization, AIS alarm
(all one’s) reception, loss of receive carrier or if CRC4 multiframe synchronization (if enabled) cannot be
found within 128 ms of FAS synchronization. If any one (or more) of the above conditions is present,
then the framer will transmit a RAI alarm. RAI generation conforms to ETS 300 011 specifications and a
constant Remote Alarm will be transmitted if the framer cannot find CRC4 multiframe synchronization
within 400 ms as per G.706.
It is an illegal state to have both CCR2.4 and CCR2.5 set to one at the same time.
CCR3: COMMON CONTROL REGISTER 3
(Address=1B Hex)
(MSB)
TESE
(LSB)
RCLA
TCBFS
TIRFS
–
RSRE
THSE
TBCS
SYMBOL
POSITION
NAME AND DESCRIPTION
TESE
CCR3.7
Transmit Side Elastic Store Enable.
0=elastic store is bypassed
1=elastic store is enabled
Transmit Channel Blocking Registers (TCBR) Function
Select.
0=TCBRs define the operation of the TCHBLK output pin
1=TCBRs define which signaling bits are to be inserted
Transmit Idle Registers (TIR) Function Select.
See Section
11 for details.
0=TIRs define in which channels to insert idle code
1=TIRs define in which channels to insert data from RSER
(i.e., Per Channel Loopback function)
Not Assigned.
Should be set to zero when written.
Receive Side Signaling Re–Insertion Enable.
See Section 10
for details.
0=do not re–insert signaling bits into the data stream presented
at the RSER pin
1=re–insert the signaling bits into data stream presented at the
RSER pin
Transmit Side Hardware Signaling Insertion Enable.
See
Section 10 for details.
0=do not insert signaling from the TSIG pin into the data
stream presented at the TSER pin
1=insert signaling from the TSIG pin into the data stream
TCBFS
CCR3.6
TIRFS
CCR3.5
–
CCR3.4
CCR3.3
RSRE
THSE
CCR3.2
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| 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 |
| DS21Q48C | 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 |
| DS21Q48N | 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 |
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