參數(shù)資料
型號: XRT5997
廠商: Exar Corporation
英文描述: Seven-Channel E1 Line Interface Unit(7通道 E1線接口單元)
中文描述: 七通道E1線路接口單元(7通道素E1線接口單元)
文件頁數(shù): 5/37頁
文件大?。?/td> 367K
代理商: XRT5997
XRT5997
5
Rev. 1.0.0
Pin#
Symbol
Type
Description
14
AGND
-
Analog Ground -
Receiver 1, 2, 3, 5.
15
TTIP2
O
Transmitter 2 Positive Bipolar Output:
Channel 2 within the XRT5997 device will use this pin, along with TRing2,
to transmit a bipolar line signal, via a 1:2 step-up transformer.
16
TVDD2
-
Positive Supply
- (+3.3V ± 5%), Transmitters 2.
17
TRing2
O
Transmitter 2 Negative Bipolar Output:
Channel 2 within the XRT5997 device will use this pin, along with TTIP2, to
transmit a bipolar line signal, via a 1:2 step-up transformer.
18
TGND2
Digital Ground -
Transmitters 2.
19
TRing3
O
Transmitter 3 Negative Bipolar Output:
Channel 3 within the XRT5997 device will use this pin, along with TTIP3, to
transmit a bipolar line signal, via a 1:2 step-up transformer.
20
TVDD3
Positive Supply
- (+3.3V ± 5%), Transmitters 3.
21
TTIP3
O
Transmitter 3 Positive Bipolar Output:
Channel 3 within the XRT5997 device will use this pin, along with TRing3,
to transmit a bipolar line signal, via a 1:2 step-up transformer.
22
TGND3
Digital Ground -
Transmitters 3.
23
RTIP3
I
Receiver 3 Positive Bipolar Input.
The Receive Section of Channel 4 uses this input pin, along with RRing3
to receive the bipolar line signal from the “Remote E1 Terminal”.
24
RRing3
I
Receiver 3 Negative Bipolar Input.
The Receive Section of Channel 3 uses this input pin, along with RTIP3 to
receive the bipolar line signal from the “Remote E1 Terminal”.
25
TxClk3
I
Transmitter Clock Input – Channel 3:
If the user operates Channel 3 (within the XRT5997 device) in the “clocked”
mode, then the “Transmit Section” of the Channel 3 will use the falling edge
of this signal to sample the data at the TxPOS3 and TxNEG3 input pins.
Note:
If the user operates the Channel 3 in the “clockless” mode, then the
Terminal Equipment should not apply a clock signal to this input pin.
PIN DESCRIPTION (CONT'D)
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