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參數(shù)資料
| 型號： | XRT91L31 |
| 廠商： | Exar Corporation |
| 英文描述： | STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER |
| 中文描述： | STS-12/STM-4或STS-3/STM-1的SONET / SDH收發(fā)器 |
| 文件頁數(shù)： | 31/41頁 |
| 文件大?。?/td> | 356K |
| 代理商： | XRT91L31 |
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xr
REV. 1.0.2
XRT91L31
STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER
29
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 18.
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 19.
Digital Local Loopback
F
IGURE
18. S
ERIAL
R
EMOTE
L
OOPBACK
F
IGURE
19. D
IGITAL
L
OCAL
L
OOPBACK
PISO
Re-Timer
LVPECL
Output Drivers
LVPECL
Input Drivers
CDR
SIPO
Rx Parallel Output
Tx Serial Output
Serial Remote Loopback
Rx Serial Input
PISO
Re-Timer
LVPECL
Output Drivers
LVPECL
Input Drivers
CDR
SIPO
Rx Parallel Output
Tx Serial Output
Digital Loopback
Tx Parallel Input
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| XRT91L31IQ | STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER |
| XRT91L32 | STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER |
| XRT91L32IQ-F | STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER |
| 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 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT91L31_08 | 制造商:EXAR 制造商全稱:EXAR 功能描述:STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER |
| XRT91L31ES | 功能描述:總線收發(fā)器 RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時(shí)間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel |
| XRT91L31IQ | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC SONET/SDH, FULL DPLX 3.3V I/O, LOS, CMU RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| XRT91L31IQ-F | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 8-Bit TTL 3.3V temp -45 to 85C;UART RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| XRT91L31IQ-F | 制造商:Exar Corporation 功能描述:SONET Transceiver IC |
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