参数资料
| 型号： | XRT83SL28IV-F |
| 厂商： | Exar Corporation |
| 文件页数： | 22/47页 |
| 文件大小： | 0K |
| 描述： | IC LIU SH E1 8CH 144TQFP |
| 标准包装： | 60 |
| 类型： | 线路接口装置（LIU） |
| 驱动器/接收器数： | 8/8 |
| 规程： | T1，E1，J1 |
| 电源电压： | 3.135 V ~ 3.465 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 144-LQFP |
| 供应商设备封装： | 144-TQFP（20x20） |
| 包装： | 托盘 |
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XRT83SL28
REV. 1.0.0
8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
27
3.2.3
Receive Interface with 1:1 and 1+1 Redundancy
The receivers on the backup card should be programmed for "High" impedance. Since there is no external
resistor in the circuit, the receivers on the backup card will not load down the line interface. This key design
feature eliminates the need for relays and provides one bill of materials for all interface modes of operation.
Select the impedance for the desired mode of operation, E1 75
or 120. To swap the primary card, set the
backup card to internal impedance, then the primary card to "High" impedance. See Figure 22. for a simplified
block diagram of the receive section for a 1:1 redundancy scheme.
FIGURE 22. SIMPLIFIED BLOCK DIAGRAM OF THE RECEIVE INTERFACE FOR 1:1 AND 1+1 REDUNDANCY
3.2.4
N+1 Redundancy Using External Relays
N+1 redundancy has one backup card for N primary cards.
Due to impedance mismatch and signal
contention, external relays are necessary when using this redundancy scheme. The relays create complete
isolation between the primary cards and the backup card. This allows all transmitters and receivers on the
primary cards to be configured in internal impedance, providing one bill of materials for all interface modes of
operation. The transmit and receive sections of the LIU device are described separately.
"High" Impedance
Internal Impedance
Backplane Interface
Primary Card
Backup Card
XRT83SL28
Rx
E1 Line
Rx
1:1
XRT83SL28
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相关代理商/技术参数 |
参数描述 |
|---|---|
| XRT83SL30 | 制造商:EXAR 制造商全称:EXAR 功能描述:SINGLE-CHANNEL T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR |
| XRT83SL30ES | 功能描述:外围驱动器与原件 - PCI 1 CHT1/E1 LIUSH RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
| XRT83SL30IV | 制造商:EXAR 制造商全称:EXAR 功能描述:SINGLE-CHANNEL T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR |
| XRT83SL30IV-F | 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 |
| XRT83SL30IVTR-F | 功能描述:外围驱动器与原件 - PCI RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
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