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XRT7250 Datasheet(PDF) 151 Page - Exar Corporation

Part # XRT7250
Description  DS3/E3 FRAMER IC
PDF  463 Pages
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

XRT7250 Datasheet(HTML) 151 Page - Exar Corporation

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XRT7250
DS3/E3 FRAMER IC
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REV. 1.1.1
132
Each of these functional blocks will be discussed in
detail in this document.
4.2.1
The Transmit Payload Data Input Interface
Block
Figure 43 presents a simple illustration of the Trans-
mit Payload Data Input Interface block.
FIGURE 42. A SIMPLE ILLUSTRATION OF THE TRANSMIT SECTION, WITHIN THE XRT7250, WHEN IT HAS BEEN CON-
FIGURED TO OPERATE IN THE
DS3 MODE
Transmit
Payload Data
Input
Interface Block
Transmit DS3/E3
Framer Block
Transmit LIU
Interface
Block
TxSer
TxNib[3:0]
TxInClk
TxPOS
TxNEG
TxLineClk
Transmit Overhead
Input
Interface Block
TxOHClk
TxOHIns
TxOHInd
TxOH
TxOHEnable
TxOHFrame
TxNibClk
TxFrame
Tx DS3 HDLC
Controller/Buffer
Tx DS3 HDLC
Controller/Buffer
From Microprocessor
Interface Block



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