XRT4500CV View Datasheet(PDF) - Exar Corporation
Part Name
Description
MFG CO.
'XRT4500CV' PDF : 96 Pages View PDF
XRT4500
MULTIPROTOCOL SERIAL NETWORK INTERFACE IC
REV. 1.0.5
áç
inputs or outputs. * indicates signal complement. X .
is don't care.
TABLE 9: MUX2 CONNECTION TABLE (RX4-RX7, TX4-TX7), OUTPUT VERSUS INPUT
SCENARIO
NUMBER
CONTROL INPUT/
PIN NUMBER
DCE/
DTE
LP
31
18
A
0
0
RX4D
40
TX4D
B
0
1
RX4B-
RX4A
C
1
0
TX4D
D
1
1
RX4B-
RX4A
SIGNAL SOURCE FOR OUTPUT NAME/PIN NUMBER
TX4B-
TX4A
RX5D
TX5B-
TX5A
RX67D TR6B-TR6A
10, 11
33
13, 12
32
30, 29
RX4B-
TX5D
TR6B-
TX5D
X
RX4A
TR6A
TX4D
RX5B-
TX5D
TR6B-
X
RX5A
TR6A
RX4B-
RX4A
TX76D
RX5B-
RX5A
TR7 RX5B-RX5A
TX4D
RX5B-
TX5D
TR7
RX5A
TX76D
TR7
27
TX76D
TX76D
X
X
NOTES:
1. Table entries are inputs to MUX2.
2. Column headings are outputs.
3. Signal names ending with A or B are analog inputs or
outputs. Signal names ending with D are digital inputs
or outputs.
4. X = Don’t Care (not used)
5. Shaded blocks = Normal (No Loop-Back)
Operating Modes for the XRT4500
The XRT4500 Multi protocol Serial Interface device
can be configured to operate in a wide variety of
modes or “scenarios”. This document illustrates some
of these “scenarios” and provides the reader with the
following information associated with each of these
scenarios.
• Which pins (on the “DCE Mode” XRT4500 and
“DTE Mode” XRT4500) are used to propagate vari-
ous data or clock signals.
• Which signals are to be used when operating the
XRT4500 in the “differential” or “single-ended”
modes.
• How does one configure the “DCE Mode” and “DTE
Mode” XRT4500 to operate in these scenarios.
NOTES:
1. The “line” signals are drawn with both a “solid” line
and a “dashed” line. Both lines are used to transmit
and receive “differential” mode signals. However,
the “solid” line identifies the signal that should be
used, when operating the Transmitter in the “Sin-
gle-Ended” mode.
2. Each scenario includes a table that indicates how
to configure the XRT4500 into each of these
modes, by specifying the appropriate logic states
for EC, 2CK/3CK, LP, CKINV, DTINV, and EN_OSC.
3. In all, 48 scenarios have been defined for the
XRT4500 device. Currently, this document only lists
a subset of these scenarios. Further versions of the
XRT4500 data sheet will include this information for
all 48 scenarios.
67
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