參數(shù)資料
型號： TLIU04C1
廠商： Lineage Power
英文描述： Quad T1/E1 Line Interface(四T1/E1線接口)
中文描述： 四T1/E1線路接口（四個T1/E1線接口）
文件頁數(shù)： 43/100頁
文件大?。?/td> 1321K
代理商： TLIU04C1
Advance Data Sheet, Rev. 2
April 1999
TLIU04C1 Quad T1/E1 Line Interface
43
Lucent Technologies Inc.
Microprocessor Mode
(continued)
Line Encoding/Decoding
Alternate Mark Inversion (AMI)
The default line code used for T1 is alternate mark inversion (AMI). The coding scheme represents a 1 with a pulse
or mark on the positive or negative rail and a 0 with no pulse on either rails. This scheme is shown in Table 18.
Table 18. AMI Encoding
The T1 ones density rule requires that in every 24 bits of information to be transmitted, there must be at least three
pulses, and no more than 15 zeros may be transmitted consecutively.
AT&T Technical Reference 62411 for digital transmissions requires that in every 8 bits of information, at least one
pulse must be present.
T1-Binary 8 Zero Code Suppression (B8ZS)
Clear channel transmission can be accomplished using binary 8 zero code suppression (B8ZS). Eight consecutive
zeros are replaced with the B8ZS code. This code consists of two bipolar violations in bit positions 4 and 7 and
valid bipolar marks in bit positions 5 and 8. The receiving end recognizes this code and replaces it with the original
string of eight zeros. Table 19 shows the encoding of a string of zeros using B8ZS. B8ZS is recommended when
ESF format is used.
Table 19. DS1 B8ZS Encoding
High-Density Bipolar of Order 3 (HDB3)
The line code used for CEPT is described in ITU Rec. G.703 Section 6.1 as high-density bipolar of order 3 (HDB3).
HDB3 uses a substitution code that acts on strings of four zeros. The substitute HDB3 codes are 000V and B00V,
where V represents a violation of the bipolar rule and B represents as inserted pulse conforming to the AMI rule
defined in ITU Rec. G.701, item 9004. The choice of the B00V or 000V is made so that the number of B pulses
between consecutive V pulses is odd. In other words, successive V pulses are of alternate polarity so that no direct
current (dc) component is introduced. The substitute codes follow each other if the string of zeros continues. The
choice of the first substitute code is arbitrary. A line code error is defined as a bipolar violation and consists of two
pulses of the same polarity that is not defined as one of the two substitute codes. Coding violations are indicated as
bipolar violations. An example is shown in Table 20.
Table 20. ITU HDB3 Coding and DCPAT Binary Coding
Input Bit Stream
AMI Data
1011
–0+–
0000
0000
0111
0+–+
1010
–0+0
Bit Positions
Before B8ZS
After B8ZS
1
0
0
2
0
0
3
0
0
4
0
V
5
0
B
6
0
0
7
0
V
8
0
B
—
1
B
—
0
0
—
1
B
1
0
0
2
0
0
3
0
0
4
0
V
5
0
B
6
0
0
7
0
V
8
0
B
Input Bit Stream
HDB3-Coded Data
HDB3-Coded Levels
1011
1011
–0+–
0000
000V
000–
01
01
0+
0000
000V
000+
0000
B00V
–00–
0000
B00V
+00+
0000
B00V
–00–
相關PDF資料
PDF描述
TLV3011AIDBVR Nanopower, 1.8V, SOT23 Comparator with Voltage Reference
TLV349x CAPACITOR, CLASS Y2 1.0NFCAPACITOR, CLASS Y2 1.0NF; Capacitance:1nF; Voltage rating, AC:250V; Voltage rating, DC:2500V; Capacitor dielectric type:Polypropylene; Series:B81122; Tolerance, +:20%; Tolerance, -:20%; Temp, op.
TLV3011AIDBVT Nanopower, 1.8V, SOT23 Comparator with Voltage Reference
TLV3011AIDCKR Nanopower, 1.8V, SOT23 Comparator with Voltage Reference
TLV3011AIDCKT Nanopower, 1.8V, SOT23 Comparator with Voltage Reference
相關代理商/技術參數(shù)
參數(shù)描述
TLIXF30001 制造商:GIGA 功能描述:
TLIXF30003 制造商:Rochester Electronics LLC 功能描述:- Bulk
TLIXF30007-852838 制造商:Cortina Systems Inc 功能描述:
TLIXF30009-865852 功能描述:IC OPT TRANSPORT PROC 868-TBGA RoHS:是 類別:集成電路 (IC) >> 接口 - 電信 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS 產(chǎn)品變化通告:Product Discontinuation 06/Feb/2012 標準包裝:750 系列:*
TLIXF30010 制造商:Intel 功能描述:
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*