- 您现在的位置：买卖IC网 > PDF目录10993 > DS2151QB (Maxim Integrated Products)IC TXRX T1 1-CHIP 5V LP 44-PLCC PDF资料下载
参数资料
| 型号： | DS2151QB |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 24/60页 |
| 文件大小： | 0K |
| 描述： | IC TXRX T1 1-CHIP 5V LP 44-PLCC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 26 |
| 功能： | 单芯片收发器 |
| 接口： | T1 |
| 电路数： | 1 |
| 电源电压： | 4.75 V ~ 5.25 V |
| 电流 - 电源： | 65mA |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 44-LCC（J 形引线） |
| 供应商设备封装： | 44-PLCC（16.59x16.59） |
| 包装： | 管件 |
| 包括： | 警报检测器和发生器，CSU 回路代码发生器和检测器，DSX-1和CSU 线路补偿发生器 |
| 产品目录页面： | 1429 (CN2011-ZH PDF) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页当前第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页
DS2151Q
30 of 60
7 FDL/FS EXTRACTION AND INSERTION
The DS2151Q can extract/insert data from/into the Facility Data Link (FDL) in the ESF framing mode
and from/into Fs bit position in the D4 framing mode. Since SLC-96 utilizes the Fs bit position, this
capability can also be used in SLC-96 applications. The operation of the receive and transmit sections
will be discussed separately.
7.1 Receive Section
In the receive section, the recovered FDL bits or Fs bits are shifted bit-by-bit into the Receive FDL
register (RFDL). Since the RFDL is 8 bits in length, it will fill up every 2ms (8 times 250
s). The
DS2151Q will signal an external microcontroller that the buffer has filled via the SR2.4 bit. If enabled via
IMR2.4, the INT2 pin will toggle low indicating that the buffer has filled and needs to be read. The user
has 2ms to read this data before it is lost. If the byte in the RFDL matches either of the bytes programmed
into the RFDLM1 or RFDLM2 registers, then the SR2.2 bit will be set to a 1 and the INT2 pin will be
toggled low if enabled via IMR2.2. This feature allows an external microcontroller to ignore the FDL or
Fs pattern until an important event occurs.
The DS2151Q also contains a 0 destuffer that is controlled via the CCR2.0 bit. In both ANSI T1.403 and
TR54016, communications on the FDL follows a subset of a LAPD protocol. The LAPD protocol states
that no more than five 1s should be transmitted in a row so that the data does not resemble an opening or
closing flag (01111110) or an abort signal (11111111). If enabled via CCR2.0, the DS2151Q will
automatically look for five 1s in a row, followed by a 0. If it finds such a pattern, it will automatically
remove the 0. If the 0 destuffer sees six or more 1s in a row followed by a 0, the 0 is not removed. The
CCR2.0 bit should always be set to a 1 when the DS2151Q is extracting the FDL. More on how to use the
DS2151Q in FDL and SLC-96 applications is covered in a separate application note. Also, contact the
factory for C code software that implements both ANSI T1.403 and AT&T TR54016.
RFDL: RECEIVE FDL REGISTER (Address = 28 Hex)
(MSB)
(LSB)
RFDL7
RFDL6
RFDL5
RFDL4
RFDL3
RFDL2
RFDL1
RFDL0
SYMBOL
POSITION
NAME AND DESCRIPTION
RFDL7
RFDL.7
MSB of the Received FDL Code
RFDL0
RFDL.0
LSB of the Received FDL Code
The Receive FDL Register (RFDL) reports the incoming Facility Data Link (FDL) or the incoming Fs
bits. The LSB is received first.
相关PDF资料 |
PDF描述 |
|---|---|
| DS21Q58LN+ | IC TXRX E1 QUAD 3.3V 100LQFP |
| DS26504LN+ | IC T1/E1/J1 64KCC ELEMENT 64LQFP |
| DS21352G | IC TXRX T1 1-CHIP 3.3V 100-BGA |
| DS2174QN+T&R | IC BERT ENHANCED 44-PLCC |
| DS2155GNC2+T&R | TXRX T1/E1/J1 SGL 100CSBGA |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2151QB/T&R | 制造商:Maxim Integrated Products 功能描述:T1 SINGLE CHIP XCVR REV B T&R - Tape and Reel |
| DS2151QB/T&R+ | 制造商:Maxim Integrated Products 功能描述:FRAMER DS1/E1/ISDN-PRI/T1 5V 44PLCC - Tape and Reel |
| DS2151QB/T&R | 功能描述:网络控制器与处理器 IC RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| DS2151QB+ | 功能描述:网络控制器与处理器 IC T1 Transceiver RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| DS2151QB+T&R | 制造商:Maxim Integrated Products 功能描述:FRAMER DS1/E1/ISDN-PRI/T1 5V 44PLCC - Tape and Reel |
发布紧急采购，3分钟左右您将得到回复。