參數(shù)資料
型號(hào)： XRT72L74
廠商： Exar Corporation
元件分類(lèi)： 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(yè)數(shù)： 97/104頁(yè)
文件大?。?/td> 1301K
代理商： XRT72L74
á
XRT72L74
FOUR CHANNEL, DS3 ATM UNI/CLEAR-CHANNEL FRAMER
PRELIMINARY
REV. P1.0.0
97
T
ABLE
115:
L
INE
I
NTERFACE
D
RIVE
R
EGISTER
R
EGISTER
114 L
INE
I
NTERFACE
D
RIVE
R
EGISTER
H
EX
A
DDRESS
: 0
X
72
B
IT
F
UNCTION
T
YPE
D
EFAULT
D
ESCRIPTION
-O
PERATION
7
Reserved
R/W
0
6
Reserved
R/W
0
5
REQB
R/W
0
This “Read/Write” bit-field permits the user to control the state of the “REQB”
Output pin. The “REQB” output pin can be connected to the “REQB” input
pin of the XRT73L04 device.
0: Sets the “REQB” output pin to “0”. If this output pin is connected to the
“REQB” input pin of the LIU IC, then this setting will enable the “Receive
Equalizer” within the LIU IC.
1: Sets the “REQB” output pin to “1”. If this output pin is connected to the
“REQB” input pin of the LIU IC, then this setting will disable the “Receive
Equalizer” within the LIU IC.
N
OTE
:
For guidelines on when to enable or disable the Receive Equalizer,
within the LIU IC, please consult the XRT73L04 Data Sheet.
4
TAOS
R/W
0
This “Read/Write” bit-field permits the user to control the state of the “TAOS”
output pin. The “TAOS” output pin can be connected to the “TAOS” input pin
of the XRT73L04 device.
0: Sets the “TAOS” output pin to “0”. If this output pin is connected to the
“TAOS” input of the LIU IC, then this setting will configure the Transmit Sec-
tion of the LIU IC to transmit an “All Ones” pattern.
1: Sets the “TAOS” output pin to “1”. If this output pin is connected to the
“TAOS” input pin of the LIU IC, then this setting will NOT configure the Trans-
mit Section of the LIU IC to transmit an “All Ones” pattern.
3
ENCODIS
R/W
1
This “Read/Write” bit-field permits the user to control the state of the “ENCO-
DIS” output pin. The “ENCODIS” output pin can be connected to the “END-
ECDIS” input pin of the XRT73L04 device.
0: Sets the “ENCODIS” output pin to “0”. If this output pin is connected to
the (ENCODIS and DECODIS) or ENDECDIS input pins of the LIU IC, then
this settting will enable the HDB3/B3ZS Encoder/Decoder blocks within the
LIU IC.
1: Sets the “ENCODIS” output pin to “1”. If this output pin is connected to the
“(ENCODIS and DECODIS) or “ENDECDIS input pins fo the LIU IC, then this
setting will disable the “HDB3/B3ZS Encoder/Decoder blocks within the LIU
IC.
2
Tx Lev
R/W
0
This “Read/Write” bit-field permits the user to control the state of the
“TxLEV” output pin. The “TxLEV” output pin can be connected to the
“TxLEV” input pin of the XRT73L04 device.
0: Sets the “TxLEV” output pin to “0”. If this output pin is connected to the
“TxLEV” input pin of the LIU IC, then this setting will enable the “Transmit
Line Build-Out” circuit, within the Transmit Section of the LIU IC.
1: Sets the “TxLEV” output pin to “1”. If this output pin is connected to the
“TxLEV” input of the LIU IC, then this setting will disable the “Transmit Line
Build-Out” circuit, within the Transmit Section of the LIU IC.
N
OTE
:
For guidelines on when to enable or disable the “Transmit Line Build-
Out” circuit, within the LIU IC, please consult the XRT73L04 Data Sheet.
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
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
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