参数资料
| 型号： | XRT73LC03AIV-F |
| 厂商： | Exar Corporation |
| 文件页数： | 39/61页 |
| 文件大小： | 0K |
| 描述： | IC LIU E3/DS3/STS-1 3CH 120LQFP |
| 标准包装： | 72 |
| 类型： | 线路接口装置（LIU） |
| 驱动器/接收器数： | 3/3 |
| 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： | 120-LQFP |
| 供应商设备封装： | 120-LQFP（14x20） |
| 包装： | 托盘 |
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XRT73LC03A
42
3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
REV. 1.0.4
If the XRT73LC03A is operating in the HOST Mode,
the state of ALOS_(n) of Channel(n) can be polled or
monitored by reading in the contents of Command
Register CR0. .
If the ALOS_(n) bit-field contains a "1", then the cor-
responding Channel(n) is currently declaring an
ALOS condition. Conversely, if the ALOS_(n) bit-field
contains a "0", then the channel is not currently de-
claring an ALOS condition.
Disabling the ALOS Detector
For debugging purposes, it may be useful to disable
the ALOS Detector. If the XRT73LC03A is operating
in the HOST Mode, disable the Channel(n) ALOS De-
tector by writing a "1" into the ALOSDIS_(n) bit-field
in Command Register CR2.
2. The Digital LOS (DLOS) Declaration/Clearance
Criteria
A given channel(n) declares a Digital LOS
(DLOS_(n)) condition if the XRT73LC03A detects
160±32 or more consecutive "0’s" in the incoming da-
ta.
The channel clears DLOS if it detects four consecu-
tive sets of 32 bit-periods, each of which contains at
least 10 "1’s" (e.g., average pulse density of greater
than 33%).
Monitoring the State of DLOS
If the XRT73LC03A is operating in the HOST Mode
the state of DLOS_(n) of Channel(n) can be polled or
monitored by reading in the contents of Command
Register CR0.
If the DLOS_(n) bit-field contains a “1”, then the cor-
responding channel(n) is currently declaring a DLOS
condition. Conversely, if the DLOS_(n) bit-field con-
tains a “0”, then the channel(n) is currently declaring
the DLOS condition.
Disabling the DLOS Detector
For debugging purposes, it is useful to disable the
DLOS_(n) detector. If the XRT73LC03A is operating
in the HOST Mode, the DLOS Detector can be dis-
abled by writing a “1” into the DLOSDIS_(n) bit-field in
Command Register CR2.
NOTE: Setting both the ALOSDIS_(n) and DLOSDIS_(n)
bit-fields to "1" disables LOS Declaration by Channel(n).
3.5.3
Muting the Recovered Data while the LOS
is being Declared
In some applications it is not desirable for a channel
within the E3/DS3/STS-1 LIU to recover data and
route it to the Receiving Terminal while the channel is
declaring an LOS condition. Consequently, the
XRT73LC03A includes an LOS Muting feature. This
feature, if enabled, causes a given channel to halt
transmission of the recovered data to the Receiving
Terminal while the LOS condition is "true". In this
case, the RPOS_(n) and RNEG_(n) output pins are
COMMAND REGISTER CR0-(n)
D4
D3
D2
D1
D0
RLOL_(n)
RLOS_(n)
ALOS_(n)
DLOS_(n)
DMO_(n)
Read Only
COMMAND REGISTER CR2-(n)
D4
D3
D2
D1
D0
Reserved
ENDECDIS_(n)
ALOSDIS_(n)
DLOSDIS_(n)
REQEN_(n)
XX
1X
X
COMMAND REGISTER CR0-(n)
D4
D3
D2
D1
D0
RLOL_(n) RLOS_(n) ALOS_(n) DLOS_(n) DMO_(n)
Read Only Read Only Read Only Read Only Read Only
COMMAND REGISTER CR2-(n)
D4
D3
D2
D1
D0
Reserved
ENDECDIS_(n)
ALOSDIS(n)
DLOSDIS(n)
REQEN(n)
XXX
1X
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相关代理商/技术参数 |
参数描述 |
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| XRT73LC04A | 制造商:EXAR 制造商全称:EXAR 功能描述:4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT |
| XRT73LC04A_08 | 制造商:EXAR 制造商全称:EXAR 功能描述:4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT |
| XRT73LC04AES | 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 |
| XRT73LC04AIV | 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 |
| XRT73LC04AIV-F | 功能描述:外围驱动器与原件 - PCI 4-Ch DS3, E3, STS-1 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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