XRT7302IV View Datasheet(PDF) - Exar Corporation
Part Name
Description
MFG CO.
'XRT7302IV' PDF : 62 Pages View PDF
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PRELIMINARY
2 CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
XRT7302
REV. 1.1.6
COMMAND REGISTER CR3-(N)
D4
D3
D2
D1
D0
SR/(DR)_(n)
LOSMUT(n)
RxOFF(n)
RxClk(n)INV
Reserved
X
X
X
1
X
Inverting the RxClk(n) signals via the Hardware
Mode
Setting the RxClkINV input pin “High" inverts all the
RxClk(n) output signals.
a. Operating in the HOST Mode
Configure Channel(n) to output Single-Rail data to
the Terminal Equipment by writing a "1" into the SR/
(DR)_(n) bit-field of Command Register CR3-(n).
3.7.2 Routing Single-Rail Format (Binary Data
Stream) data to the Receive Terminal Equipment
COMMAND REGISTER CR3-(N)
D4
D3
D2
D1
D0
SR/(DR)_(n)
LOSMUT(n)
RxOFF(n)
RxClk(n)INV
Reserved
1
X
X
X
X
The configured channel outputs Single-Rail data to
the Receiving Terminal Equipment via its correspond-
ing RPOS(n) and RxClk(n) output pins as illustrated
in Figure 25 and Figure 26.
b. Operating in the Hardware Mode
Configure the XRT7302 to output Single-Rail data
from the Receive Sections of all channels by pulling
the SR/(DR) pin to VDD.
NOTE: When the XRT7302 is operating in the Hardware
Mode, the setting of the SR/(DR) input pin applies globally
to both channels.
.
FIGURE 25. THE TYPICAL INTERFACE FOR DATA TRANSMISSION IN A SINGLE-RAIL FORMAT FROM THE
RECEIVE SECTION OF THE XRT7302 TO THE RECEIVING TERMINAL EQUIPMENT
RxPOS RPOS
Terminal
EquTipemrmeinntal
(E3/DESq3uoipr mSTeSnt-1
(E3F/rDaSm3eor)r STS-1
Framer)
RxClk
RxClk
Receive
LRoegciceive
BloLcokgic
Block
Exar E3/DS3/STS-1 LIU
43
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