Specifications

DP83848C , DP83848I
DP83848VYB, DP83848YB
SNLS266E –MAY 2007–REVISED MARCH 2015 www.ti.com
6.5.1.2.1 Analog Front End
In addition to the Digital Equalization and Gain Control, the DP83848VYB includes Analog Equalization
and Gain Control in the Analog Front End. The Analog Equalization reduces the amount of Digital
Equalization required in the DSP.
6.5.1.2.2 Digital Signal Processor
The Digital Signal Processor includes Adaptive Equalization with Gain Control and Base Line Wander
Compensation.
Figure 6-6. 100BASE-TX Receive Block Diagram
6.5.1.2.2.1 Digital Adaptive Equalization and Gain Control
When transmitting data at high speeds over copper twisted pair cable, frequency dependent attenuation
becomes a concern. In high-speed twisted pair signalling, the frequency content of the transmitted signal
can vary greatly during normal operation based primarily on the randomness of the scrambled data
stream. This variation in signal attenuation caused by frequency variations must be compensated to
ensure the integrity of the transmission.
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