XRT5997IV View Datasheet(PDF) - Exar Corporation
Part Name
Description
MFG CO.
'XRT5997IV' PDF : 37 Pages View PDF
XRT5997
PIN DESCRIPTION (CONT'D)
Pin#
Symbol
Type
78
TxNEG6
I
79
TxClk6
I
80
TGND6
81
TTIP6
O
82
TVDD6
83
TRing6
O
84
DGND
Description
Transmitter - Negative Data Input – Channel 6:
The exact signal that should be applied to this input pin depends upon
whether the user intends to operate the “Transmit Section” (of the Channel 6)
in the “Clocked” or “Clockless” Mode.
Clocked Mode:
The Terminal Equipment should apply bit-wide NRZ pulses on this input pin,
whenever the Terminal Equipment needs to transmit a “negative-polarity”
pulse onto the line via TTIP6 and TRing6 output pins. The XRT5997
device will sample this input pin upon the falling edge of the TClk6 signal.
Clockless Mode:
The Terminal Equipment should apply RZ pulses to this input pin, anytime the
Terminal Equipment needs to transmit a “negative-polarity” pulse onto the
line via TIP6 and TRing6 output pins.
Transmitter Clock Input – Channel 6:
If the user operates Channel 6 (within the XRT5997 device) in the “clocked”
mode, then the “Transmit Section” of the Channel 6 will use the falling edge of
this signal to sample the data at the TxPOS6 and TxNEG6 input pins.
Note: If the user operates the Channel 6 in the “clockless” mode, then the
Terminal Equipment should not apply a clock signal to this input pin.
Digital Ground. Transmitters 6.
Transmitter 6 Positive Bipolar Output:
Channel 6 within the XRT5997 device will use this pin, along with TRing6, to
transmit a bipolar line signal, via a 1:2 step-up transformer.
Positive Supply (+3.3V ± 5%), Transmitters 6.
Transmitter 6 Negative Bipolar Output:
Channel 6 within the XRT5997 device will use this pin, along with TTIP6, to
transmit a bipolar line signal, via a 1:2 step-up transformer.
Digital Ground. Digital Circuitry.
Rev. 1.0.0
13
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