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ST802RT1AFR Scheda tecnica(PDF) 47 Page - STMicroelectronics

Il numero della parte ST802RT1AFR
Spiegazioni elettronici  10/100 real-time Ethernet 3.3 V transceiver
PDF  58 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST802RT1AFR Scheda tecnica(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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