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XRT7250 Scheda tecnica(PDF) 436 Page - Exar Corporation

Il numero della parte XRT7250
Spiegazioni elettronici  DS3/E3 FRAMER IC
PDF  463 Pages
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Produttore elettronici  EXAR [Exar Corporation]
Homepage  http://www.exar.com
Logo EXAR - Exar Corporation

XRT7250 Scheda tecnica(HTML) 436 Page - Exar Corporation

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XRT7250
DS3/E3 FRAMER IC
REV. 1.1.1
417
6.3.4.2
Method 2 - Using RxOutClk and the
RxOHEnable signals
Method 1 requires that the Terminal Equipment be
able to handle an additional clock signal, RxOHClk.
However, there may be a situation in which the Termi-
nal Equipment circuitry does not have the means to
deal with this extra clock signal, in order to use the
Receive Overhead Data Output Interface. Method 2
involves the use of the following signals.
• RxOH
• RxOutClk
• RxOHEnable
• RxOHFrame
Each of these signals are listed and described in
Table 89.
FIGURE 205. ILLUSTRATION OF THE SIGNALS THAT ARE OUTPUT VIA THE RECEIVE OVERHEAD OUTPUT INTERFACE
(FOR METHOD 1).
RxOHClk
RxOHFrame
RxOH
FA1, Bit 7
FA1, Bit 6
FA1, Bit 5
FA1, Bit 4
FA1, Bit 3
Terminal Equipment should sample
the “RxOHFrame” and “RxOH” signals
here.
Recommended Sampling Edges



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