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ST802RT1AFR Datasheet(PDF) 47 Page - STMicroelectronics

No. de pieza ST802RT1AFR
Descripción Electrónicos  10/100 real-time Ethernet 3.3 V transceiver
PDF  58 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST802RT1AFR Datasheet(HTML) 47 Page - STMicroelectronics

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ST802RT1A, ST802RT1B
Device operation
Doc ID 17049 Rev 1
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7.21
PECL receiver
The data signals coming from the optical transceiver are in PECL format and need to be
converted to CMOS level before being transmitted to the data and clock recovery, and to the
digital portion.
The data is sampled by the optical transceiver, but the data stream is related to the clock of
the transmitting transceiver, so it needs to be recovered, re-sampled and aligned to the RX
clock.
This function and all the timing involved are assumed to be compatible with that currently
available for the 100TX (twisted pair), so no modifications are required for this circuit.
Figure 9.
Implementation of the PECL TX section
Figure 10.
Implementation of the PECL RX section



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