参数资料
| 型号： | XRT72L71IQ |
| 厂商： | Exar Corporation |
| 文件页数： | 43/102页 |
| 文件大小： | 0K |
| 描述： | IC FRAMER DS3 ATM UNI 160PQFP |
| 产品变化通告： | XRT72Lx Series Obsolescence 02/May/2012 |
| 标准包装： | 24 |
| 控制器类型： | DS3 ATM UNI，透明通道调帧器 |
| 电源电压： | 3.3V |
| 电流 - 电源： | 120mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 160-BQFP |
| 供应商设备封装： | 160-PQFP（28x28） |
| 包装： | 托盘 |
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á
XRT72L71
DS3 ATM UNI/CLEAR CHANNEL FRAMER
REV. 1.1.0
41
The On-Chip Line Interface Scan Register allows
the user to monitor the state of 3 input pins. The
function of these input pins, when asserted, are
tabulated below.
FEATURES
TRANSMIT AND RECEIVE SECTIONS
UTOPIA INTERFACE BLOCKS
Compliant with UTOPIA Level 2 Interface Specifica-
tion (e.g., supports Single-PHY or Multi-PHY opera-
tion).
8-bit or 16-bit wide UTOPIA Data Bus operation in
the Transmit and Receive Directions.
The UTOPIA Data Bus runs at clock rates of 25
MHz, 33 MHz and 50 MHz
Supports both Octet-Level and Cell-Level Hand-
shaking between the UNI and the ATM Layer pro-
cessor.
The Transmit UTOPIA Interface block performs par-
ity checking of ATM cell data that is written into it,
by the ATM Layer processor. Will optionally discard
errored cells.
Contains on-chip 16 cell FIFO in the Transmit Direc-
tion (TxFIFO)
The TxFIFO can be configured to operate with
depths of 4, 8, 12 or 16 cells
Contains on-chip 16 cell FIFO in the Receive
Direction (RxFIFO)
RLOOP
Remote Loop-Back Mode Select:
This bit-field, along with LLOOP can be used to configure the XRT7300 into one of four different loop-
back modes.
Setting RLOOP to “1” (with LLOOP = 0) configures the XRT7300 to operate in the Remote Loop-Back
Mode.
Setting RLOOP to “1” (with LLOOP = 1) configures the XRT7300 to operate in the “Digital Local Loop-
Back” Mode.
Setting RLOOP to “0” (with LLOOP = 1) configures the XRT7300 to operate in the “Analog Local Loop-
Back” Mode.
Setting RLOOP to “0” (with LLOOP = 0) configures the XRT7300 to operate in the “Normal” (No-Loop-
back) Mode.
LLOOP
Local Loop-Back Mode Select:
This bit-field along with RLOOP can be used to configure the XRT7300 into one of four different loop-
back modes.
Setting LLOOP to “1” (with RLOOP = 0) configures the XRT7300 to operate in the “Analog Local Loop-
Back” Mode.
Setting LLOOP to “1” (with RLOOP = 1) configures the XRT7300 to operate in the “Digital Local Loop-
Back” Mode.
Setting LLOOP to “0” (with RLOOP = 0) configures the XRT7300 to operate in the “Normal” (No-Loop-
Back) Mode.
Setting LLOOP to “0” (with RLOOP = 1) configures the XRT7300 to operate in the “Remote Loop-Back”
Mode.
Signal Name
Function of Output Pin
SIGNAL NAME
FUNCTION OF INPUT PIN IF ASSERTED
DMO
Indicates that the "Drive Monitor" circuitry within the XRT7300 has not detected any bipolar signals
within the last 128 ± 32 bit periods.
RLOL
Indicates that the "Clock Recovery" circuit, within the XRT7300 has lost "lock" with the incoming DS3
line signal.
RLOS
Indicates that the XRT7300 is declaring an LOS (Loss of Signal) Condition.
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| XRT73L03BIV-F | IC LIU E3/DS3/STS-1 3CH 120LQFP |
| XRT73L04BIV-F | IC LIU E3/DS3/STS-1 4CH 144LQFP |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| XRT72L71IQ-F | 功能描述:网络控制器与处理器 IC Single CH DS3 UNI (3.3V) 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 |
| XRT72L73IB | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Telecommunication IC |
| XRT72L74IB | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Telecommunication IC |
| XRT7300 | 制造商:EXAR 制造商全称:EXAR 功能描述:E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT7300ES | 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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