参数资料
| 型号： | XRT73LC00AIVTR |
| 厂商： | Exar Corporation |
| 文件页数： | 47/61页 |
| 文件大小： | 0K |
| 描述： | IC LIU STS1/DS3/E3 SGL 44TQFP |
| 标准包装： | 1,000 |
| 类型： | 线路接口装置（LIU） |
| 驱动器/接收器数： | 1/1 |
| 规程： | DS3，E3，STS-1 |
| 电源电压： | 3.135 V ~ 3.465 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 44-LQFP |
| 供应商设备封装： | 44-TQFP（10x10） |
| 包装： | 带卷 (TR) |
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XRT73LC00A
48
REV. 1.0.2
E3/DS3/STS-1 LINE INTERFACE UNIT
Shut off the Transmit Driver by toggling the TXOFF input pin (pin 35) “High”. Turn on the Transmit Driver by
toggling the TXOFF input pin “Low”.
When the XRT73LC00A is operating in the HOST Mode
If the XRT73LC00A is operating in the HOST Mode, the TXOFF input pin is disabled.
Consequently,
theTransmit Driver is turned off by writing to Command Register CR1 and setting the TXOFF bit-field (bit D4) to
“1”.
NOTE: If the Transmitter is shut off via the TXOFF feature, the XRT73LC00A can NOT be configured to operate in the
Analog Local Loop-Back Mode. To perform diagnostics on the chip and still invoke the TXOFF feature as in
System Redundancy Applications, use the Digital Local Loop-Back feature instead.
4.5
The Transmit Drive Monitor Features
The Transmit Drive Monitor feature performs monitoring of the line in the Transmit Direction for the occurrence
of fault conditions such as a short circuit on the line or a defective Transmit Drive in the XRT73LC00A.
The Transmit Drive Monitor is activated by connecting the MTIP pin (pin 44) to the TTIP line through a 270
resistor connected in series and by connecting the MRING pin (pin 43) to the TRING line through a 270
resistor connected in series, as illustrated in Figure 32.
When the Transmit Drive Monitor circuitry is connected to the line as illustrated in Figure 26, then it monitors
the line for transitions. As long as the Transmit Drive Monitor circuitry detects transitions on the line via the
MTIP and MRING pins, it keeps the DMO (Drive Monitor Output) signal “Low”. However, if the Transmit Drive
Monitor circuit detects no transitions on the line for 128±32 TCLK periods, then the DMO signal toggles “High”.
NOTES:
1.
The Transmit Drive Monitor circuit does not have to be used to operate the Transmit Section of the XRT73LC00A.
This is purely a diagnostic feature.
2.
The Transmit Drive Monitor feature can also be used to monitor the Transmit Output Line Signal of another LIU IC
as illustrated in Figure 33.
COMMAND REGISTER CR1 (ADDRESS = 0X01)
D4
D3
D2
D1
D0
TXOFF
TAOS
TXCLKINV
TXLEV
TXBIN
1
X
FIGURE 32. THE XRT73LC00A EMPLOYING THE TRANSMIT DRIVE MONITOR FEATURES
R1 = 31.6
R2 = 31.6
TTIP
TRING
1:1
MTIP
MRING
R3 = 270
R4 = 270
T1
R5 = 75
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相关代理商/技术参数 |
参数描述 |
|---|---|
| XRT73LC00AIVTR-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 |
| XRT73LC00IV | 制造商:EXAR 制造商全称:EXAR 功能描述:E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT73LC03A | 制造商:EXAR 制造商全称:EXAR 功能描述:3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT |
| XRT73LC03A_08 | 制造商:EXAR 制造商全称:EXAR 功能描述:3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT |
| XRT73LC03AES | 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 |
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