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參數(shù)資料
| 型號(hào)： | XRT73L02 |
| 廠商： | Exar Corporation |
| 英文描述： | 2 Channel E3/DS3/STS-1 Line Interface Unit(2通道 E3/DS3/STS-1線接口單元) |
| 中文描述： | 2頻道E3/DS3/STS-1線路接口單元（2通道E3/DS3/STS-1線接口單元） |
| 文件頁(yè)數(shù)： | 32/62頁(yè) |
| 文件大?。?/td> | 716K |
| 代理商： | XRT73L02 |
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XRT73L02
2 CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
REV. P1.1.0
á
PRELIMINARY
28
2.3.2
HDB3 Encoding
If the XRT73L02 has been configured to operate in
the E3 Mode, the HDB3/B3ZS Encoder blocks oper-
ate in the HDB3 Mode. When the Encoder is operat-
ing in this mode it parses through and searches the
Transmit Data Stream from the Transmit Logic Block
for the occurrence of four (4) consecutive zeros
("0000"). If the HDB3 Encoder finds an occurrence of
four consecutive zeros then it substitutes these four
"0’s" with either a "000V" or a "B00V" pattern. The
HDB3 Encoder decides whether to substitute with ei-
ther the "000V" or the "B00V" pattern in order to in-
sure that an odd number of Bipolar pulses exist be-
tween any two consecutive violation pulses.
Figure 11 illustrates the HDB3 Encoder at work with
two separate strings of four or more consecutive ze-
ros.
2.3.3
Disabling the HDB3/B3ZS Encoder
The XRT73L02 HDB3/B3ZS Encoder can be disabled
by two methods.
a. Operating in the Hardware Mode.
The HBD3/B3ZS Encoder blocks of all channels
are disabled by setting the ENDECDIS (Encoder/
Decoder Disable) input pin to “0".
N
OTE
:
By executing this step the HDB3/B3ZS Encoder and
Decoder blocks in all channels of the XRT73L02 are glo-
bally disabled.
b. Operating in the HOST Mode.
When the XRT73L02 is operating in the HOST
Mode the HDB3/B3ZS Encoders in each channel
can be individually enabled or disabled. Disable
the HDB3/B3ZS Encoder block in Channel (n) by
F
IGURE
10. A
N
E
XAMPLE
OF
B3ZS E
NCODING
1
1
1
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
B
0
V
0
0
V
Line Signal
TxClk
TNData
TPData
Data
F
IGURE
11. A
N
E
XAMPLE
OF
HDB3 E
NCODING
1
1
1
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
0
1
0
0
0
0
0
0
0
B
0
V
0
0
V
Line Signal
TxClk
TNData
TPData
Data
0
0
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| XRT73L03A | 3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT |
| XRT73L03AIV | 3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT |
| XRT73L03B | 3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT |
| XRT73L03BIV | 3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT |
| XRT73L04A | 4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT73L02M | 制造商:EXAR 制造商全稱:EXAR 功能描述:TWO CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT73L02MES | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 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 |
| XRT73L02MIV | 制造商:EXAR 制造商全稱:EXAR 功能描述:TWO CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT73L02MIV-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 |
| XRT73L02MIVTR-F | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 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 |
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