參數(shù)資料
型號(hào)： DS2148
英文描述： 5V E1/T1/J1 Line Interface
中文描述： 5V、E1/T1/J1線路接口
文件頁(yè)數(shù)： 6/75頁(yè)
文件大?。?/td> 544K
代理商： DS2148
DS2148/Q48
6 of 75
3. INTRODUCTION
The analog AMI/HDB3 waveform off the E1 line or the AMI/B8ZS waveform off the T1 line is
transformer coupled into the RTIP and RRING pins of the DS2148. The user has the option to use
internal software-selectable receive-side termination for 75
/100
/120 applications or external
termination. The device recovers clock and data from the analog signal and passes it through the jitter
attenuation MUX outputting the received line clock at RCLK and bipolar or NRZ data at RPOS and
RNEG. The DS2148 contains an active filter that reconstructs the analog-received signal for the nonlinear
losses that occur in transmission. The receive circuitry also is configurable for various monitor
applications. The device has a usable receive sensitivity of 0dB to -43dB (E1) and 0dB to -36dB (T1),
which allows the device to operate on 0.63mm (22AWG) cables up to 2.5km (E1) and 6k feet (T1) in
length. Data input at TPOS and TNEG is sent via the jitter attenuation MUX to the waveshaping circuitry
and line driver. The DS2148 will drive the E1 or T1 line from the TTIP and TRING pins via a coupling
transformer. The line driver can handle both CEPT 30/ISDN-PRI lines for E1 and long-haul (CSU) or
short-haul (DSX-1) lines for T1.
3.1
DOCUMENT REVISION HISTORY
1) 100 /60 termination reversed in
Internal Rx Termination Select
tables, 091799.
2) Add DS21Q48 pinout, 092899.
3) Correct VSM pin number in Q48 (12 x 12 BGA) from G5 to G4, 120699.
4) Add timing diagram for Status Register (write access mode); Add mechanical dimensions for the
quad version, 032900.
5) Timing diagram for Status Register (write access mode) added; elaboration on burst mode bit; add
mechanical dimensions for the quad version, 050300.
6) Changes to datasheet to indicate 5V only part, 011801.
7) Added supply current measurement; added thermal characteristics of quad package, 092001.
8) Corrected typos and removed instances of 3V operation, 082504.
相關(guān)PDF資料
PDF描述
DS2148G 5V E1/T1/J1 Line Interface
DS2148GN 5V E1/T1/J1 Line Interface
DS2148T 5V E1/T1/J1 Line Interface
DS2148TN 5V E1/T1/J1 Line Interface
DS21Q48 5V E1/T1/J1 Line Interface
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS2148DK 功能描述:網(wǎng)絡(luò)開發(fā)工具 DS2148 Dev Kit RoHS:否 制造商:Rabbit Semiconductor 產(chǎn)品:Development Kits 類型:Ethernet to Wi-Fi Bridges 工具用于評(píng)估:RCM6600W 數(shù)據(jù)速率:20 Mbps, 40 Mbps 接口類型:802.11 b/g, Ethernet 工作電源電壓:3.3 V
DS2148G 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
DS2148G+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 5V 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
DS2148GB 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
DS2148GN 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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