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Preliminary Spec. ver
1.4
100BASE-TX DIGITAL BLOCKS
KS8910 100/10 Mbps ETHERNET TRANSCEIVER
PHYSICAL MEDIUM DEPENDENT SUBLAYER
The majority of the PMD is either analog or mixed-signal and is, therefore, not described in this charter, though a
resume is given just below. A detailed description of this part of the circuitry can be found in chapter 6 of this
document.
In the transmit direction the serial data stream is converted from NRZI to MLT-3.
In the inbound direction the DC level of the signal is first restored, then it runs through an equalizer and finally it
gets converted from MLT-3 to NRZI format. Then the clock as well as data are recovered and forwarded to the
PMA.
4-14
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