參數(shù)資料
型號: XRT75L04D
廠商: Exar Corporation
英文描述: FOUR CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
中文描述: 四通道E3/DS3/STS-1線路接口單元與SONET DESYNCHRONIZER
文件頁數(shù): 33/98頁
文件大小: 536K
代理商: XRT75L04D
á
REV. 1.0.1
XRT75L04D
FOUR CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
29
Case 1:
MTIP_1 connected to TTIP_1
MRING_1 connected to TRING_1
TxMON_1 (bit) = 0
As shown in the figure 18, connect MTIP_1 to TTIP_1 and MRING_1 to TRING_1 via the 270
resistors.
When no transitions on the line are detected for 128 ± 32 TxClk_1 periods, the DMO_1 pin will toggle “High”.
The DMO_1 and the DMOIS_1 bits also will be set in the control register. When the transitions are detected,
the DMO_1 pin will toggle back to normal state. The DMO_1 bit also will be cleared. However, the DMOIS_1 bit
will remain set until read. If the DMOIE_1 bit has been set, an interrupt will be generated.
Case 2:
MTIP_1 connected to TTIP_1
MRING_1 connected to TRING_1
TxMON_1 (bit) = 1
This has the same effect as in Case 1. It is redundant to use the MTIP_1/MRING_1 pins in this case.
Case 3:
MTIP_1 not connected to TTIP_1
MRING_1 not connected to TRING_1
TxMON_1 (bit) = 1
When no transitions on the TTIP_1/TRING_1 are detected for 128 ± 32 TxClk_1 periods, the DMO_1 pin will
toggle “High”. The DMO_1 and the DMOIS_1 bits also will be set in the control register. When the transitions
are detected, the DMO_1 pin will toggle back to normal state. The DMO_1 bit also will be cleared. However, the
DMOIS_1 bit will remain set until read. If the DMOIE_1 bit has been set, an interrupt will be generated. Please
note that the MTIP_1/MRING_1 pins cannot be used to monitor any other adjacent channels.
Case 4:
MTIP_m not connected to TTIP_m +n where m = 0,1...3 and n = 0,1...3
MRING_m not connected to TRING_m +n where m = 0,1...3 and n = 0,1...3
TxMON_n (bit) = 0
In this case, with external connection, any of the MTIP/MRING can be connected to any of the adjacent
channel to be monitored.
Please note that if TxMON_n bit is set, then monitoring will be done for that channel n. By toggling the
TxMON_n bit from 0 to 1, the monitoring can be switched between self-monitoring to monitoring any adajcent
channels.
N
OTE
:
The Drive Monitor Circuit is only for diagnostic purpose and does not have to be used to operate the transmitter.
4.5
Transmitter Section On/Off:
The transmitter section of each channel can either be turned on or off. To turn on the transmitter, set the input
pin TxON_n to “High” (in Hardware Mode) or write a “1” to the TxON_n control bits (in Host Mode) with
TxON_n pins tied “High”.
When the transmitter is turned off, TTIP_n and TRing_n are tri-stated.
N
OTES
:
1.
2.
This feature provides support for Redundancy
If the XRT75L04D is configured in Host mode, to permit a system designed for redundancy to quickly shut-off the
defective line card and turn on the back-up line card, writing a “1” to the TxON_n control bits transfers the control
to TxON_n pins.
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XRT75L04DIV FOUR CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
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XRT75L04DES 功能描述:時鐘合成器/抖動清除器 4CH T3/E3/STS1 LIU+DESYNCH 3.3V RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel
XRT75L04DIV 功能描述:外圍驅(qū)動器與原件 - PCI 4 CHNL E3/DS3/STS 1 JITTER ATTENUATOR RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray
XRT75L04DIV-F 功能描述:外圍驅(qū)動器與原件 - PCI 4-Ch DS3, E3, STS-1 RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray
XRT75L04DIVTR 功能描述:時鐘合成器/抖動清除器 4 CHNL E3/DS3/STS 1 JITTER ATTENUATOR RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel
XRT75L04DIVTR-F 功能描述:時鐘合成器/抖動清除器 RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel