參數(shù)資料
型號(hào)： DS21Q50LN+
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 22/87頁(yè)
文件大?。?/td> 0K
描述： IC TXRX E1 QUAD 100-LQFP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 90
功能： 收發(fā)器
接口： E1
電路數(shù)： 4
電源電壓： 3.14 V ~ 3.47 V
電流 - 電源： 230mA
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 100-LQFP
供應(yīng)商設(shè)備封裝： 100-LQFP（14x14）
包裝： 托盤(pán)
包括： AIS 警報(bào)檢測(cè)器和發(fā)生器，回送功能，PRBS 發(fā)生器 / 檢測(cè)器，遠(yuǎn)程檢測(cè)器和發(fā)生器
DS21Q50
29 of 87
4.3 Automatic Alarm Generation
The device can be programmed to automatically transmit AIS or remote alarm. When automatic AIS
generation is enabled (CCR2.5 = 1), the device monitors the receive framer to determine if any of the
following conditions are present: loss of receive frame synchronization, AIS alarm (all ones) reception, or
loss-of-receive carrier (or signal). If any one (or more) of the above conditions is present, then the framer
forces an AIS alarm.
When automatic RAI generation is enabled (CCR2.4 = 1), the framer monitors the receive to determine if
any of the following conditions are present: loss-of-receive frame synchronization, AIS alarm (all ones)
reception, or loss-of-receive carrier (or signal), or if CRC4 multiframe synchronization cannot be found
within 128ms of FAS synchronization (if CRC4 is enabled). If any one (or more) of the above conditions
is present, the framer transmits an RAI alarm. RAI generation conforms to ETS 300 011 specifications
and a constant remote alarm is transmitted if the DS21Q50 cannot find CRC4 multiframe synchronization
within 400ms as per G.706.
Register Name:
CCR3
Register Description:
Common Control Register
Register Address:
14 Hex
Bit
7
6
5
4
3
2
1
0
Name
RLB
LLB
LIAIS
TCM4
TCM3
TCM2
TCM1
TCM0
NAME
BIT
FUNCTION
RLB
7
Remote Loopback. See Section 4.4 for details.
0 = loopback disabled
1 = loopback enabled
LLB
6
Local Loopback. See Section 4.5 for details.
0 = loopback disabled
1 = loopback enabled
LIAIS
5
Line Interface AIS Generation Enable
0 = allow normal data to be transmitted at TTIP and TRING
1 = force unframed all ones to be transmitted at TTIP and TRING at the MCLK rate
TCM4
4
Transmit Channel Monitor Bit 4. MSB of a channel decode that determines which transmit
channel data appear in the TDS0M register. See Section 6 or details.
TCM3
3
Transmit Channel Monitor Bit 3
TCM2
2
Transmit Channel Monitor Bit 2
TCM1
1
Transmit Channel Monitor Bit 1
TCM0
0
Transmit Channel Monitor Bit 0. LSB of the channel decode.
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DS21Q50N 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC
DS21Q55 功能描述:IC TXRX QUAD T1/E1/J1 SCT 256BGA RoHS:否 類別:集成電路 (IC) >> 接口 - 電信 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS 產(chǎn)品變化通告:Product Discontinuation 06/Feb/2012 標(biāo)準(zhǔn)包裝:750 系列:*
DS21Q552 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 5V Quad T1 Transceiver 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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