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參數(shù)資料
| 型號： | XRT75L04 |
| 廠商： | Exar Corporation |
| 英文描述： | FOUR CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER |
| 中文描述： | 四通道E3/DS3/STS-1線路接口單元，其抖動 |
| 文件頁數(shù)： | 29/57頁 |
| 文件大小： | 345K |
| 代理商： | XRT75L04 |
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XRT75L04
27
REV. 1.0.4
FOUR CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
An example of B3ZS encoding is shown in Figure 14. If the encoder detects an occurrence of three
consecutive zeros in the data stream, it is replaced with either B0V or 00V, where ‘B’ refers to Bipolar pulse
that is compliant with the Alternating polarity requirement of the AMI (Alternate Mark Inversion) line code and
‘V’ refers to a Bipolar Violation (e.g., a bipolar pulse that violates the AMI line code). The substitution of B0V or
00V is made so that an odd number of bipolar pulses exist between any two consecutive violation (V) pulses.
This avoids the introduction of a DC component into the line signal.
4.2.2
HDB3 Encoding:
An example of the HDB3 encoding is shown in Figure 15. If the HDB3 encoder detects an occurrence of four
consecutive zeros in the data stream, then the four zeros are substituted with either 000V or B00V pattern. The
substitution code is made in such a way that an odd number of bipolar (B) pulses exist between any
consecutive V pulses. This avoids the introduction of DC component into the analog signal.
N
OTES
:
1.
2.
3.
When Dual-Rail data format is selected, the B3ZS/HDB3 Encoder is automatically disabled.
In Dual-Rail format, the Bipolar Violations in the incoming data stream is converted to valid data pulses.
Encoder and Decoder is enabled only in Single-Rail mode.
4.3
T
RANSMIT
P
ULSE
S
HAPER
:
The Transmit Pulse Shaper converts the B3ZS encoded digital pulses into a single analog Alternate Mark
Inversion (AMI) pulse that meet the industry standard mask template requirements for STS-1 and DS3. See
Figures 8 and 9.
For E3 mode, the pulse shaper converts the HDB3 encoded pulses into a single full amplitude square shaped
pulse with very little slope. This is illustrated in Figure 7.
F
IGURE
14. B3ZS E
NCODING
F
ORMAT
F
IGURE
15. HDB3 E
NCODING
F
ORMAT
0
0
0
1
1
1
1
1
1
1
V
B
V
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
V
B
V
0
0
0
TClk
Line
Signal
TPDATA
0
0
0
0
0
1
1
1
1
1
1
1
V
B
V
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
V
0
0
0
TClk
Line
Signal
TPDATA
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| XRT75L06D | SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER |
| XRT75L06DIB | SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER |
| XRT75L06 | SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR |
| XRT75L06IB | SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT75L04D | 制造商:EXAR 制造商全稱:EXAR 功能描述:FOUR CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER |
| 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(fēng)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(fēng)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 |
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