- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376461 > XRT73L02 (Exar Corporation) 2 Channel E3/DS3/STS-1 Line Interface Unit(2通道 E3/DS3/STS-1線接口單元) PDF資料下載
參數(shù)資料
| 型號： | 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） |
| 文件頁數(shù)： | 44/62頁 |
| 文件大?。?/td> | 716K |
| 代理商： | XRT73L02 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁當前第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁
XRT73L02
2 CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
REV. P1.1.0
á
PRELIMINARY
40
Disabling the ALOS Detector
For debugging purposes it may be useful to disable
the ALOS Detector in the XRT73L02. If the
XRT73L02 is operating in the HOST Mode, the ALOS
Detector can be disabled by writing a "1" into the
ALOSDIS_(n) bit-field in Command Register CR2.
2. The Digital LOS (DLOS) Declaration/Clearance
Criteria
A given Channel (n) in the XRT73L02 declares a Dig-
ital LOS (DLOS_(n)) condition if the XRT73L02 de-
tects 160±32 or more consecutive "0’s" in the incom-
ing data.
The channel clears DLOS if it detects four consecu-
tive sets of 32 bit-periods, each of which contains at
least 10 "1’s" (e.g., average pulse density of greater
than 33%).
Monitoring the State of DLOS
If the XRT73L02 is operating in the HOST Mode the
state of DLOS_(n) of Channel (n) can be polled or
monitored by reading in the contents of Command
Register CR0.
If the DLOS_(n) bit-field contains a “1”, then the cor-
responding Channel (n) is currently declaring a DLOS
condition. If the DLOS_(n) bit-field contains a “0”, the
Channel (n) is currently declaring the DLOS condi-
tion.
Disabling the DLOS Detector
For debugging purposes, it is useful to be able to dis-
able the DLOS_(n) detector in the XRT73L02. If the
XRT73L02 is operating in the HOST Mode, the DLOS
Detector can be disabled by writing a “1” into the
DLOSDIS_(n) bit-field of Command Register CR2.
COMMAND REGISTER CR2-(N)
N
OTE
:
Setting both the ALOSDIS_(n) and DLOSDIS_(n)
bit-fields to "1" disables LOS Declaration by Channel (n).
3.6.3
Muting the Recovered Data while the LOS
is being Declared
In some applications it is not desirable for a channel
of the XRT73L02 to recover data and route it to the
Receiving Terminal while the channel is declaring an
LOS condition. Consequently, the XRT73L02 in-
cludes an LOS Muting feature. This feature if en-
abled causes a given channel to halt transmission of
the recovered data to the Receiving Terminal while
the LOS condition is "true". In this case, the
RPOS_(n) and RNEG_(n) output pins are forced to
"0". Once the LOS condition has been cleared, the
channel resumes normal transmission of the recov-
ered data to the Receiving Terminal.
This feature is available whenever the XRT73L02 is
operating in the HOST or Hardware Mode.
a. Operating in the Hardware Mode.
To enable the MUTing upon LOS feature for all chan-
nels of the XRT73L02, pull the LOSMUTEN output
pin "High".
b. Operating in the HOST Mode.
COMMAND REGISTER CR2-(N)
D4
D3
D2
D1
D0
Reserved
ENDECDIS_(n)
ALOSDIS_(n)
DLOSDIS_(n)
REQEN_(n)
X
X
1
X
X
COMMAND REGISTER CR0-(N)
D4
D3
D2
D1
D0
RLOL_(n) RLOS_(n) ALOS_(n) DLOS_(n) DMO_(n)
Read Only Read Only Read Only Read Only Read Only
D4
D3
D2
D1
D0
Reserved
ENDECDIS_(n)
ALOSDIS_(n)
DLOSDIS_(n)
REQEN_(n)
X
X
X
1
X
相關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 |
相關代理商/技術參數(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:外圍驅動器與原件 - PCI RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| XRT73L02MIVTR-F | 功能描述:網(wǎng)絡控制器與處理器 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 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
發(fā)布緊急采購，3分鐘左右您將得到回復。