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參數(shù)資料
| 型號： | XRT83L314IB-L |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 10/84頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC LIU T1/E1/J1 14CH 304TBGA |
| 標準包裝： | 27 |
| 類型： | 線路接口裝置（LIU） |
| 驅(qū)動器/接收器數(shù)： | 14/14 |
| 規(guī)程： | T1，E1，J1 |
| 電源電壓： | 3.135 V ~ 3.465 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 304-LBGA |
| 供應(yīng)商設(shè)備封裝： | 304-TBGA（31x31） |
| 包裝： | 托盤 |
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XRT83L314
14-CHANNEL T1/E1/J1 LONG-HAUL/SHORT-HAUL LINE INTERFACE UNIT
REV. 1.0.0
14
FIGURE 2. SIMPLIFIED BLOCK DIAGRAM OF THE CLOCK SYNTHESIZER
1.1
ALL T1/E1 Mode
To reduce system noise and power consumption, the XRT83L314 offers an ALL T1/E1 mode. Since most line
card designs are configured to operate in T1 or E1 only, the LIU can be selected to shut off the timing
references for the mode not being used by programming the appropriate global register. By default the ALL
T1/E1 mode is enabled (ALLT1/E1 bit = "0"). If the LIU is configured for T1, all E1 clock references and the
8kHz reference are shut off internally to the chip. This reduces the amount of internal clocks switching within
the LIU, hence reducing noise and power consumption. In E1 mode, the T1 clock references are internally
shut off, however the 8kHz reference is available. To disable this feature, the ALLT1/E1 bit must be set to a "1"
in the appropriate global register.
2.0
RECEIVE PATH LINE INTERFACE
The receive path of the XRT83L314 LIU consists of 14 independent T1/E1/J1 receivers. The following section
describes the complete receive path from RTIP/RRING inputs to RCLK/RPOS/RNEG outputs. A simplified
block diagram of the receive path is shown in Figure 3.
FIGURE 3. SIMPLIFIED BLOCK DIAGRAM OF THE RECEIVE PATH
Clock
Synthesizer
Internal
Reference
1.544MHz
2.048MHz
Input Clock
8kHz
1.544Mhz
2.048MHz
2.048/4.096/8.192/16.384 MHz
1.544/3.088/6.176/12.352MHz
8kHzOUT
MCLKE1out
MCLKT1out
MCLKT1Nout
MCLKE1Nout
Programmable
HDB3/B8ZS
Decoder
Rx Jitter
Attenuator
Clock & Data
Recovery
Peak Detector
& Slicer
Rx Equalizer
Control
RTIP
RRING
RCLK
RNEG
RPOS
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|---|---|
| XRT83L34 | 制造商:EXAR 制造商全稱:EXAR 功能描述:QUAD T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR |
| XRT83L34_05 | 制造商:EXAR 制造商全稱:EXAR 功能描述:QUAD T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR |
| XRT83L34ES | 功能描述:外圍驅(qū)動器與原件 - PCI RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
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| XRT83L34IV-F | 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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