參數(shù)資料
型號： XRT75L03DIV-F
廠商： Exar Corporation
文件頁數(shù)： 41/134頁
文件大?。?/td> 0K
描述： IC LIU E3/DS3/STS-1 3CH 128LQFP
標準包裝： 72
類型： 線路接口裝置（LIU）
驅(qū)動器/接收器數(shù)： 3/3
規(guī)程： DS3，E3，STS-1
電源電壓： 3.135 V ~ 3.465 V
安裝類型： 表面貼裝
封裝/外殼： 128-LQFP 裸露焊盤
供應商設備封裝： 128-LQFP（14x20）
包裝： 托盤
XRT75L03D
á
REV. 1.0.0
THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
9
31
6
17
MTIP_0
MTIP_1
MTIP_2
I
Monitor Tip Input - Positive Polarity Signal - Channel 0:
Monitor Tip Input - Positive Polarity Signal - Channel 1:
Monitor Tip Input - Positive Polarity Signal - Channel 2:
These input pins along with MRING_n function as the Transmit Drive Monitor
Output (DMO) input monitoring pins. To (1) monitor the Transmit Output line
signal and (2) to perform this monitoring externally, then this pin MUST be con-
nected to the corresponding TTIP_n output pin via a 274 ohm series resistor.
Similarly, the MRING_n input pin MUST also be connected to its corresponding
TRING_n output pin via a 274 ohm series resistor.
The MTIP_n and MRING_n input pins will continuously monitor the Transmit
Output line signal via the TTIP_n and TRING_n output pins for bipolar activity. If
these pins do not detect any bipolar activity for 128 bit periods, then the Trans-
mit Drive Monitor circuit will drive the corresponding DMO_n output pin "High" in
order to denote a possible fault condition in the Transmit Output Line signal
path.
NOTES:
1.
These input pins are inactive if the user choose to internally monitor
the Transmit Output line signal.
2.
Internal Monitoring is only available as an option if the XRT75L03D in
is being operated in the Host Mode.
32
5
16
MRing_0
MRing_1
MRing_2
I
Monitor Ring Input - Channel 0:
Monitor Ring Input - Channel 1:
Monitor Ring Input - Channel 2:
These input pins along with MTIP_n function as the Transmit Drive Monitor Out-
put (DMO) input monitoring pins. To (1) monitor the Transmit Output line signal
and (2) to perform this monitoring externally, then this input pin MUST be con-
nected to the corresponding TRING_n output pin via a 274 ohm series resistor.
Similarly, the MTIP_n input pin MUST be connected to its corresponding
TTIP_n output pin via a 274 ohm series resistor.
The MTIP_n and MRING_n input pins will continuously monitor the Transmit
Output line signal via the TTIP_n and TRING_n output pins for bipolar activity. If
these pins do not detect any bipolar activity for 128 bit periods, then the Trans-
mit Drive Monitor circuit will drive the corresponding DMO_n output pin "High" to
indicate a possible fault condition in the Transmit Output Line signal path.
NOTES:
1.
These input pins are inactive if the user chooses to internally monitor
the Transmit Output line signal.
2.
Internal Monitoring is only available as an option if the XRT75L03D is
being operated in the Host Mode.
TRANSMIT LINE SIDE PINS
PIN #SIGNAL NAME
TYPE
DESCRIPTION
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