参数资料
| 型号： | XRT83SL28IV-F |
| 厂商： | Exar Corporation |
| 文件页数： | 17/47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
xr
8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
REV. 1.0.0
22
2.4
TAOS (Transmit All Ones)
The XRT83SL28 has the ability to transmit all ones on a per channel basis by programming the appropriate
channel register. If TAOS is enabled, the Transmitter outputs will generate an All Ones pattern regardless of
the Transmit Input data. The Remote Loop Back mode has priority over TAOS. Figure 15 is a diagram showing
the all ones signal at TTIP and TRING.
FIGURE 15. TAOS (TRANSMIT ALL ONES)ATAOS (AUTOMATIC TRANSMIT ALL ONES)
2.5
ATAOS (Automatic Transmit All Ones)
Unlike TAOS, ATAOS is used to generate an All Ones signal only when an RLOS condition occurs. If ATAOS is
enabled, any channel that experiences an RLOS condition will automatically cause the transmitter on that
channel to send an all ones pattern to the line. When RLOS clears, the All Ones pattern ends and the Transmit
path returns to normal operation. For TAOS on the receive output pins, see ARAOS in the Receive Section of
this datasheet. A simplified block diagram of the ATAOS function is shown in Figure 16.
FIGURE 16. SIMPLIFIED BLOCK DIAGRAM OF THE ATAOS FUNCTION
2.6
Transmitter Power down in Hardware mode
In Hardware mode, if TCLK is pulled "Low" for 16 MCLK cycles the transmitter outputs at TTIP/TRING are tri-
stated. If TCLK is pulled "High" for 16 MCLK cycles the transmitter will send an All Ones signal to the line,
using MCLK as reference.
2.7
DMO (Driver Monitor Output)
The driver monitor circuit is used to detect transmit driver failures by monitoring the activities at TTIP/TRING
outputs. Driver failure may be caused by a short circuit in the primary transformer or system problems at the
transmit inputs. If the transmitter of a channel has no output for more than 128 TCLK cycles, DMO goes "High"
until a valid transmit pulse is detected. If the DMO interrupt is enabled, the change in status of DMO will cause
the interrupt pin to go "Low". Once the status register is read, the interrupt pin will return "High" and the status
register will be reset (RUR).
TAOS
11
1
RLOS
ATAOS
TAOS
TTIP
TRING
Tx
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相关代理商/技术参数 |
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| 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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