參數(shù)資料
型號(hào)： XRT7300
廠商： Exar Corporation
英文描述： E3/DS3/STS-1 LINE INTERFACE UNIT
中文描述： E3/DS3/STS-1線路接口單元
文件頁(yè)數(shù)： 4/55頁(yè)
文件大?。?/td> 608K
代理商： XRT7300
XRT7300
E3/DS3/STS-1 LINE INTERFACE UNIT
á
REV. 1.1.1
II
2.2 T
HE
T
RANSMIT
C
LOCK
D
UTY
C
YCLE
A
DJUST
C
IRCUITRY
.........................................................................21
2.3 T
HE
HDB3/B3ZS E
NCODER
B
LOCK
........................................................................................................22
B3ZS Encoding....................................................................................................................................22
Figure 13.An Example of B3ZS Encoding ........................................................................................................22
HDB3 Encoding....................................................................................................................................22
Figure 14.An Example of HDB3 Encoding........................................................................................................23
Enabling/Disabling the HDB3/B3ZS Encoder ......................................................................................23
2.4 T
HE
T
RANSMIT
P
ULSE
S
HAPER
C
IRCUITRY
..............................................................................................23
COMMAND REGISTER CR2 (ADDRESS = 0X02 ....................................................................................23
Enabling the Transmit Line Build-Out Circuit.......................................................................................23
Disabling the Transmit Line Build-Out Circuit ......................................................................................23
COMMAND REGISTER CR1 (ADDRESS = 0X01) ...................................................................................23
Design Guideline for Setting the Transmit Line Build-Out Circuit ........................................................24
COMMAND REGISTER CR1 (ADDRESS = 0X01) ...................................................................................24
The Transmit Line Build-Out Circuit and E3 Applications....................................................................24
2.5 I
NTERFACING
THE
T
RANSMIT
S
ECTION
OF
THE
XRT7300
TO
THE
L
INE
.....................................................24
Figure 15.Recommended Schematic for Interfacing the Transmit Section of the XRT7300 to the Line...........24
TRANSFORMER RECOMMENDATIONS........................................................................................................25
3.0 THE RECEIVE SECTION ......................................................................................................................... 25
3.1 I
NTERFACING
THE
R
ECEIVE
S
ECTION
OF
THE
XRT7300
TO
THE
L
INE
.......................................................25
Figure 16.Recommended Schematic for Interfacing the Receive Section of the XRT7300 to the Line (Transform-
er-Coupling)........................................................................................................................................26
Figure 17.Recommended Schematic for Interfacing the Receive Section of the XRT7300 to the Line (Capaci-
tive-Coupling)......................................................................................................................................26
3.2 T
HE
R
ECEIVE
E
QUALIZER
B
LOCK
............................................................................................................26
Figure 18. The Typical Application for the System Installer..............................................................................27
COMMAND REGISTER CR2 (ADDRESS = 0X02) ...................................................................................28
3.3 P
EAK
D
ETECTOR
AND
S
LICER
.................................................................................................................28
3.4 C
LOCK
R
ECOVERY
PLL..........................................................................................................................28
3.5 T
HE
HDB3/B3ZS D
ECODER
...................................................................................................................28
B3ZS Decoding DS3/STS-1 Applications ............................................................................................29
Figure 19.An Example of B3ZS Decoding ........................................................................................................29
HDB3 Decoding E3 Applications..........................................................................................................29
Figure 20.An Example of HDB3 Decoding........................................................................................................29
Enabling/Disabling the HDB3/B3ZS Decoder......................................................................................30
3.6 LOS D
ECLARATION
/C
LEARANCE
.............................................................................................................30
COMMAND REGISTER CR2 (ADDRESS = 0X02) ...................................................................................30
The LOS Declaration/Clearance Criteria for E3 Applications...............................................................30
Figure 21.The Signal Levels that the XRT7300 Declares and Clears LOS (E3 Mode Only)............................31
Figure 22.The Behavior the LOS Output Indicator In Response to the Loss of Signal and the Restoration of Sig-
nal.......................................................................................................................................................31
The LOS Declaration/Clearance Criteria for DS3 and STS-1 Applications..........................................32
Table 4:The ALOS Declaration and Clearance Thresholds for a Given Setting of LOSTHR (DS3 and STS-1 Ap-
plications) for Equalizer Enabled or Disabled ......................................................................................32
COMMAND REGISTER CR0 (ADDRESS = 0X00) ...................................................................................32
COMMAND REGISTER CR2 (ADDRESS = 0X02) ...................................................................................33
COMMAND REGISTER CR0 (ADDRESS = 0X00) ...................................................................................33
相關(guān)PDF資料
PDF描述
XRT7302 2 Channel E3/DS3/STS-1 Line Interface Unit(2通道 E3/DS3/STS-1線接口單元)
XRT73L02M TWO CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
XRT73L02MIV TWO CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
XRT73L02 2 Channel E3/DS3/STS-1 Line Interface Unit(2通道 E3/DS3/STS-1線接口單元)
XRT73L03A 3 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
XRT7300ES 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
XRT7300IV 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
XRT7300IV-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
XRT7300IVTR 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
XRT7300IVTR-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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