- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376461 > XRT72L73 (Exar Corporation) Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 PDF資料下載
參數(shù)資料
| 型號： | XRT72L73 |
| 廠商： | Exar Corporation |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| 中文描述： | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| 文件頁數(shù)： | 18/105頁 |
| 文件大?。?/td> | 1307K |
| 代理商： | XRT72L73 |
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頁當(dāng)前第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頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁
XRT72L73
THREE CHANNEL, DS3 ATM UNI/CLEAR-CHANNEL FRAMER
REV. P1.0.1
á
PRELIMINARY
18
D20
B19
A19
Req_0
Req_1
Req_2
O
Receive Equalization Bypass Control Output Pin—(to be connected to the
XRT73L03 E3/DS3/STS-1 LIU IC):
This output pin is intended to be connected to the Req input pin of the XRT73L03 E3/
DS3/STS-1 LIU IC. The user can control the state of this output pin by writing a ‘0’
or ‘1’ to Bit 5 (Req ) of the Line Interface Driver Register (Address = 0x72). If the
user commands this signal to toggle “High” then it will cause the incoming DS3 line
signal to “by-pass” equalization circuitry, within the XRT73L03 Device. Conversely,
if the user commands this output signal to toggle “Low”, then the incoming DS3
line signal with be routed through the equalization circuitry. For information on the
criteria that should be used when deciding whether to bypass the equalization cir-
cuitry or not, please consult the “XRT73L03 E3/DS3/STS-1 LIU IC” data sheet.
Writing a “1” to Bit 5 of the Line Interface Drive Register (Address = 0x72) will
cause this output pin to toggle “High”. Writing a “0” to this bit-field will cause this
output pin to toggle “Low”.
N
OTE
:
If the designer is not using the XRT73L03 E3/DS3/STS-1 LIU IC, then this
output pin can be used for other purposes.
P23
N24
N25
RLOL_0
RLOL_1
RLOL_2
I
Receive Loss of Lock Indicator—from the XRT73L03 E3/DS3/STS-1 LIU IC:
This input pin is intended to be connected to the RLOL (Receive Loss of Lock) out-
put pin of the XRT73L03 LIU IC. The user can monitor the state of this pin by read-
ing the state of Bit 1 (RLOL) within the Line Interface Scan Register (Address =
0x73). If this input pin is “Low”, then it means that the phase-locked-loop circuitry,
within the XRT73L03 is properly locked onto the incoming DS3 data-stream; and is
properly recovering clock and data from this DS3 data-stream. However, if this
input pin is “High”, then it means that the phase-locked-loop circuitry, within the
XRT73L03 has lost lock with the incoming DS3 data-stream, and is not properly
recovering clock and data.
For more information on the operation of the XRT73L03 E3/DS3/STS-1 LIU IC,
please consult the "XRT73L03 E3/DS3/STS-1 LIU IC" data sheet.
N
OTE
:
If the designer is not using the XRT73L03 DS3/E3/STS-1 LIU IC, this input
pin can be used for other purposes.
A15
B14
A14
RLOOP_0
RLOOP_1
RLOOP_2
O
Remote Loop-back Output Pin (to the XRT73L03 DS3/E3/STS-1 LIU IC):
This output pin is intended to be connected to the RLOOP input pin of the
XRT73L03 LIU IC. This output pin, along with the LLOOP input pin permits the user
to configure the XRT73L03 to operate in either of the following three (3) loop-back
modes.
Analog Local Loop-Back Mode
Digital Local Loop-Back Mode
Remote Loop-Back Mode.
Writing a “1” to bit 1 of the “Line Interface Drive Register (Address = 0x72) will
cause this output pin to toggle “High”. Writing a “0” to this bit-field will cause the
RLOOP output to toggle “Low”.
N
OTE
:
If the customer is not using the XRT73L03 DS3/E3/STS-1 IC, then this out-
put pin can be used for other purposes.
PIN DESCRIPTIONS
P
IN
#
N
AME
T
YPE
D
ESCRIPTION
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| XRT72L74 | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| XRT7300IV | E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT7300 | E3/DS3/STS-1 LINE INTERFACE UNIT |
| 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 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT72L73IB | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| XRT72L74IB | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| XRT7300 | 制造商:EXAR 制造商全稱:EXAR 功能描述:E3/DS3/STS-1 LINE INTERFACE UNIT |
| 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。