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參數(shù)資料
| 型號： | LXT351 |
| 廠商： | Intel Corp. |
| 英文描述： | T1/E1 Short Haul Transceiver with Crystal-less Jitter Attenuation |
| 中文描述： | 短途的T1/E1收發(fā)器與晶體抖動衰減 |
| 文件頁數(shù)： | 19/46頁 |
| 文件大?。?/td> | 1132K |
| 代理商： | LXT351 |
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T1/E1 Short Haul Transceiver with Crystal-less Jitter Attenuation
—
LXT351
Datasheet
19
2.5.1.4
Dual Loopback
See
Figure 8
. To select Dual loopback (DLOOP) set bits CR2.ERLOOP and CR2.ELLOOP to 1. In
DLOOP mode, the transmit clock and data inputs (TCLK and TPOS/TNEG or TDATA) loop back
through the Jitter Attenuator (unless disabled) to RCLK and RPOS/RNEG or RDATA. The data
and clock recovered from the twisted-pair line loop back through the transmit circuits to TTIP and
TRING without jitter attenuation.
2.5.2
Internal Pattern Generation
2.5.2.1
Transmit All Ones
See
Figure 9
. In Transmit All Ones (TAOS) mode, the transceiver ignores the TPOS and TNEG
inputs and transmits a continuous stream of 1s at the TCLK frequency. (With no TCLK, the TAOS
output clock is MCLK.) This can be used as the Alarm Indication Signal (AIS
–
also called the Blue
Alarm). TAOS is commanded by writing a 1 to bit CR2.ETAOS. Both TAOS and Local loopback
can occur simultaneously as shown in
Figure 4
, however, Remote loopback inhibits TAOS. When
both TAOS and LLOOP are active, TCLK and TPOS/TNEG loop back to RCLK and RPOS/RNEG
through the jitter attenuator (if enabled), and an all ones pattern goes to TTIP/TRING.
Figure 7. Remote Loopback
Figure 8. Dual Loopback
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LXT351PE | PCM TRANSCEIVER|SINGLE|CEPT PCM-30/E-1|CMOS|LDCC|28PIN|PLASTIC |
| LXT351QE | PCM TRANSCEIVER|SINGLE|CEPT PCM-30/E-1|CMOS|QFP|44PIN|PLASTIC |
| LXT361QE | Integrated T1/E1 LH/SH Transceivers for DS1/DSX-1/CSU or NTU/ISDN PRI Applications |
| LXT360 | Integrated T1/E1 LH/SH Transceivers for DS1/DSX-1/CSU or NTU/ISDN PRI Applications |
| LXT361 | Integrated T1/E1 LH/SH Transceivers for DS1/DSX-1/CSU or NTU/ISDN PRI Applications |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LXT351PE | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:PCM TRANSCEIVER|SINGLE|CEPT PCM-30/E-1|CMOS|LDCC|28PIN|PLASTIC |
| LXT351QE | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:PCM TRANSCEIVER|SINGLE|CEPT PCM-30/E-1|CMOS|QFP|44PIN|PLASTIC |
| LXT360 | 制造商:LVL1 制造商全稱:LVL1 功能描述:Integrated T1/E1 LH/SH Transceivers for DS1/DSX-1/CSU or NTU/ISDN PRI Applications |
| LXT360LE | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:PCM TRANSCEIVER|SINGLE|CEPT PCM-30/E-1|CMOS|QFP|44PIN|PLASTIC |
| LXT360PE | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:PCM TRANSCEIVER|SINGLE|CEPT PCM-30/E-1|CMOS|LDCC|28PIN|PLASTIC |
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