REV. 1.0.7 8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT 4.3 Transmit Jitter Attenuator The XRT83SH38 LIU is ide" />
參數(shù)資料
型號(hào)： XRT83SH38IB
廠商： Exar Corporation
文件頁(yè)數(shù)： 27/78頁(yè)
文件大?。?/td> 0K
描述： IC LIU SH T1/E1/J1 8CH 225BGA
標(biāo)準(zhǔn)包裝： 84
類(lèi)型： 線路接口裝置（LIU）
驅(qū)動(dòng)器/接收器數(shù)： 8/8
規(guī)程： T1，E1，J1
電源電壓： 3.135 V ~ 3.465 V
安裝類(lèi)型： 表面貼裝
封裝/外殼： 225-BGA
供應(yīng)商設(shè)備封裝： 225-BGA（19x19）
包裝： 托盤(pán)
XRT83SH38
30
REV. 1.0.7
8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
4.3
Transmit Jitter Attenuator
The XRT83SH38 LIU is ideal for multiplexer or mapper applications where the network data crosses multiple
timing domains. As the higher data rates are de-multiplexed down to T1 or E1 data, stuffing bits are typically
removed which can leave gaps in the incoming data stream. The transmit path has a dedicated jitter
attenuator with a 32-Bit or 64-Bit FIFO that is used to smooth the gapped clock into a steady T1 or E1 output.
The maximum gap width of the 8-Channel LIU is shown in Table 10.
NOTE: If the LIU is used in a loop timing system, the receive path has a dedicated jitter attenuator. See the Receive
Section of this datasheet.
4.4
TAOS (Transmit All Ones)
The XRT83SH38 has the ability to transmit all ones on a per channel basis by programming the appropriate
channel register. This function takes priority over the digital data present on the TPOS/TNEG inputs. For
example: If a fixed "0011" pattern is present on TPOS in single rail mode and TAOS is enabled, the transmitter
will output all ones. In addition, if digital or dual loopback is selected, the data on the RPOS output will be
equal to the data on the TPOS input. Figure 19 is a diagram showing the all ones signal at TTIP and TRING.
FIGURE 19. TAOS (TRANSMIT ALL ONES)
4.5
Transmit Diagnostic Features
In addition to TAOS, the XRT83SH38 offers diagnostic features for analyzing network integrity such as ATAOS
and QRSS on a per channel basis by programming the appropriate registers. These diagnostic features take
priority over the digital data present on TPOS/TNEG inputs. The transmitters will send the diagnostic code to
the line and will be maintained in the digital loopback if selected. When the LIU is responsible for sending
diagnostic patterns, the LIU is automatically placed in the single rail mode.
TABLE 10: MAXIMUM GAP WIDTH FOR MULTIPLEXER/MAPPER APPLICATIONS
FIFO DEPTH
MAXIMUM GAP WIDTH
32-Bit
20 UI
64-Bit
50 UI
TAOS
11
1
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XRT83SH38IB-F 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray
XRT83SL216 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:16-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
XRT83SL216_06 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:16-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
XRT83SL216ES 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI 16 CH E1 LIU SH RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray
XRT83SL216IB 功能描述:接口 - 專(zhuān)用 RoHS:否 制造商:Texas Instruments 產(chǎn)品類(lèi)型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59
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