- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376462 > XRT79L72 (Exar Corporation) 2 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC PDF資料下載
參數(shù)資料
| 型號(hào)： | XRT79L72 |
| 廠商： | Exar Corporation |
| 英文描述： | 2 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC |
| 中文描述： | 2 -通道DS3/E3自動(dòng)柜員機(jī)用戶到網(wǎng)絡(luò)接口/ Combo IC對(duì)購(gòu)買力平價(jià) |
| 文件頁(yè)數(shù)： | 44/72頁(yè) |
| 文件大?。?/td> | 441K |
| 代理商： | XRT79L72 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)當(dāng)前第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)
XRT79L72
REV. P1.0.2
PRELIMINARY
2 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC
xr
41
AE2
Y23
TAISEN
_0
TAISEN
_1
I
I
Transmit Alarm Indication Signal Enable Input
This input pin permits the user to command the Transmit DS3/E3 Framer block to
transmit an AIS pattern to the remote terminal equipment.
Setting this input pin "high" configures the Transmit DS3/E3 Framer block to trans-
mit AIS pattern to the remote terminal equipment. Setting this input pin "low" con-
figures the Transmit DS3/E3 Framer block to NOT transmit an AIS pattern to the
remote terminal equipment.
N
OTE
:
For normal operation, or if the user wishes to control the "Transmit AIS"
function via Software Control, the user should tie this input pin to GND.
AE11
AE15
MTIP
_0
MTIP
_1
I
I
Transmit Drive Monitor Input pin - Positive Polarity Input:
These input pins along with MRING function as the Transmit Drive Monitor Output
(DMO) input monitoring pins.
If the user wishes to (1) monitor the Transmit Output line signal and (2) to perform
this monitoring externally, then the user MUST connect these particular pins to the
TTIPn output pin via a 274
series resistor. Similarly, the user MUST also con-
nect the MRINGn input pin to the TRINGn output pin via a 274
series resistor.
The MTIPn and MRINGn input pins will continuously monitor the Transmit Output
line signal via the TTIPn and TRINGn output pins for bipolar activity. If these pins
do not detect any bipolar activity for 128 bit periods, then the Transmit Drive Moni-
tor circuit will drive the DMOn output pin "High" in order to denote a possible fault
condition in the Transmit Output Line signal path.
N
OTE
:
These input pins are inactive if the user choose to internally monitor the
Transmit Output line signal.
AD11
AD15
MRING
_0
MRING
_1
I
I
Transmit Drive Monitor Input pin - Positive Polarity Input:
These input pins along with MTIP function as the Transmit Drive Monitor Output
(DMO) input monitoring pins.
If the user wishes to (1) monitor the Transmit Output line signal and (2) to perform
this monitoring externally, then the user MUST connect these particular pins to the
TRINGn output pin via a 274
series resistor. Similarly, the user MUST also con-
nect the MTIPn input pin to the TTIPn output pin via a 274
series resistor.
The MTIPn and MRINGn input pins will continuously monitor the Transmit Output
line signal via the TTIPn and TRINGn output pins for bipolar activity. If these pins
do not detect any bipolar activity for 128 bit periods, then the Transmit Drive Moni-
tor circuit will drive the DMOn output pin "High" in order to denote a possible fault
condition in the Transmit Output Line signal path.
3. These input pins are inactive if the user choose to internally monitor the
Transmit Output line signal.
P
IN
#
N
AME
TYPE
D
ESCRIPTION
RECEIVE LINE SIDE SIGNALS
AD12
AD16
RTIP
_0
RTIP
_1
I
I
Receive Input - Positive Polarity Signal:
These input pins, along with the RRINGn input pins, function as the Receive
DS3/E3 Line input signal receiver of the XRT79L72.
The user is expected to connect these signals and the RRINGn input signals to a
1:1 transformer.
Whenever the RTIP/RRING input pins are receiving a positive-polarity pulse
within the incoming DS3 or E3 line signal, these input pins will be pulsed to a
"higher-voltage" than the RRING input pins.
Conversely, whenever the RTIP/RRING input pins are receiving a negative-
polarity pulse within the incoming DS3 or E3 line signal, these input pins will be
pulsed to a "lower-voltage" than the RRING input pins.
P
IN
#
N
AME
TYPE
D
ESCRIPTION
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| XRT79L72IB | 2 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC |
| XRT79L73 | 3 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC |
| XRT79L73IB | 3 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC |
| XRT79L74 | 4 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC |
| XRT79L74IB | 4 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT79L72IB | 制造商:EXAR 制造商全稱:EXAR 功能描述:2 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC |
| XRT79L73 | 制造商:EXAR 制造商全稱:EXAR 功能描述:3 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC |
| XRT79L73IB | 制造商:EXAR 制造商全稱:EXAR 功能描述:3 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC |
| XRT79L74 | 制造商:EXAR 制造商全稱:EXAR 功能描述:4 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC |
| XRT79L74IB | 制造商:EXAR 制造商全稱:EXAR 功能描述:4 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。