xrt5997 Exar Corporation, xrt5997 Datasheet - Page 8

• Manufacturer Part Number: xrt5997
• Description: Xrt5997 -seven Channel E1 Line Interface Unit
• Manufacturer: Exar Corporation

PIN DESCRIPTION (CONT'D)
Note:
Pin#
XRT5997
34
35
36
37
38
39
40
41
42
43
1
Internally pull-up with 50K resistor.
Rev. 1.0.0
RxNEG2
RxNEG5
RxPOS2
RxPOS5
Symbol
DGND
TxClk5
DVDD
DVDD
LOS2
LOS5
Type
O
O
O
O
O
O
-
-
-
I
Description
Receiver 2 Negative Data Out:
This output pin will pulse “high” whenever Channel 2, within the XRT5997
device has received a “Negative Polarity” pulse, in the incoming line signal,
at RTIP2/RRing2 inputs.
Receiver 2 Positive Data Out:
This output pin will pulse “high” whenever Channel 2, within the XRT5997
device has received a “Positive Polarity” pulse, in the incoming line signal, at
RTIP2/RRing2 inputs.
Receiver 2 Loss of Signal:
This output pin toggles “high” if Channel 2, within the XRT5997 device has
detected a “Loss of Signal” condition in the incoming line signal.
Positive Supply (+3.3V ± 5%). Digital Circuitry.
Positive Supply (+3.3V ± 5%). Digital Circuitry.
Digital Ground: Digital Circuitry.
Receiver 5 Loss of Signal:
This output pin toggles “high” if Channel 5, within the XRT5997 device has
detected a “Loss of Signal” condition in the incoming line signal.
Note:
Receiver 5 Positive Data Out:
This output pin will pulse “high” whenever Channel 5, within the XRT5997
device has received a “Positive Polarity” pulse, in the incoming line signal, at
RTIP5/RRing5 inputs.
Receiver 5 Negative Data Out:
This output pin will pulse “high” whenever Channel 5, within the XRT5997
device has received a “Negative Polarity” pulse, in the incoming line signal,
at RTIP5/RRing5 inputs.
Transmitter Clock Input – Channel 5:
If the user operates Channel 5 (within the XRT5997 device) in the “clocked”
mode, then the “Transmit Section” of the Channel 5 will use the falling edge of
this signal to sample the data at the TxPOS5 and TxNEG5 input pins.
NOTE: If the user operates the Channel 5 in the “clockless” mode, then the
Terminal Equipment should not apply a clock signal to this input pin.
1
Internally pull-up with 50K resistor
8