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參數(shù)資料
| 型號： | XRT91L32IQ-F |
| 廠商： | EXAR CORP |
| 元件分類： | 數(shù)字傳輸電路 |
| 英文描述： | STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER |
| 中文描述： | TRANSCEIVER, PQFP100 |
| 封裝： | 14 X 20 MM, 2.70 MM HEIGHT, PLASTIC, QFP-100 |
| 文件頁數(shù)： | 28/37頁 |
| 文件大小： | 417K |
| 代理商： | XRT91L32IQ-F |
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XRT91L32
STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER
xr
REV. 1.0.2
26
4.0
DIAGNOSTIC FEATURES
4.1
The serial remote loopback function is activated by setting RLOOPS "High". When serial remote loopback is
activated, the high-speed serial receive data from RXIP/N is presented at the high speed transmit output
TXOP/N, and the high-speed recovered clock is selected and presented to the high-speed transmit clock input
of the Retimer. During serial remote loopback, the high-speed receive data (RXIP/N) is also converted to
parallel data and presented at the low-speed receive parallel interface RXDO[7:0]. The recovered receive clock
is also divided by 8 and presented at the low-speed clock output RXPCLKO to synchronize the transfer of the
8-bit received parallel data. A simplified block diagram of serial remote loopback is shown in Figure 16.
Serial Remote Loopback
4.2
The digital local loopback is activated when the DLOOP signal is set "High." When digital local loopback is
activated, the high-speed data from the output of the parallel to serial converter is looped back and presented
to the high-speed input of the receiver serial to parallel converter. The CMU output is also looped back to the
receive section and is used to synchronize the transfer of the data through the receiver. In Digital loopback
mode, the transmit data from the transmit parallel interface TXDI[7:0] is serialized and presented to the high-
speed transmit output TXOP/N using the high-speed 622.08/155.52 MHz transmit clock generated from the
clock multiplier unit and presented to the input of the Retimer and SIPO. A simplified block diagram of digital
loopback is shown in Figure 17. Receive Data mute upon LOS, as shown in Figure 7, applies to Digital Local
Digital Local Loopback
Loopback Mode
F
IGURE
16. S
ERIAL
R
EMOTE
L
OOPBACK
F
IGURE
17. D
IGITAL
L
OCAL
L
OOPBACK
PISO
Re-Timer
LVPECL
Output Drivers
SIPO
CDR
LVPECL
Input Drivers
Serial Remote Loopback
RX Parallel Output
TX Serial Output
RX Serial Input
PISO
Re-Timer
LVPECL
Output Drivers
SIPO
CDR
LVPECL
Input Drivers
Digital Loopback
TX Parallel Input
RX Parallel Output
TX Serial Output
相關PDF資料 |
PDF描述 |
|---|---|
| XRT91L80 | 2.488/2.666 GBPS STS-48/STM-16 SONET/SDH TRANSCEIVER |
| XRT91L80_0507 | 2.488/2.666 GBPS STS-48/STM-16 SONET/SDH TRANSCEIVER |
| XRT91L80IB | 2.488/2.666 GBPS STS-48/STM-16 SONET/SDH TRANSCEIVER |
| XRT91L81 | 2.488/2.666GBPS OC-48/STM-16 SONET/SDH TRANSCEIVER |
| XRT91L81IB | 2.488/2.666GBPS OC-48/STM-16 SONET/SDH TRANSCEIVER |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| XRT91L32IQTR | 功能描述:LIN 收發(fā)器 PHY Transceiver RoHS:否 制造商:NXP Semiconductors 工作電源電壓: 電源電流: 最大工作溫度: 封裝 / 箱體:SO-8 |
| XRT91L32IQTR-F | 功能描述:LIN 收發(fā)器 PHY Transceiver RoHS:否 制造商:NXP Semiconductors 工作電源電壓: 電源電流: 最大工作溫度: 封裝 / 箱體:SO-8 |
| XRT91L33 | 制造商:EXAR 制造商全稱:EXAR 功能描述:STS-12/STS-3 MULTIRATE CLOCK AND DATA RECOVERY UNIT |
| XRT91L33AIG-F | 制造商:Exar Corporation 功能描述:CDR 155.52Mbps/622.08Mbps SONET/SDH 20-Pin TSSOP |
| XRT91L33ES | 功能描述:界面開發(fā)工具 Eval System for XRT91L33 Series RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
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