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Looking for reference on Ethernet dataflow

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azhar_multan

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Ethernet dataflow

I want to study the functions of transmit + & - and Recive + & - in 100Mbps base T networks. How zero's and 1's flow? What is the functions of negative line's in this and other details on electrical level. I have studied the encoding and data structures but am confused with the function of -ive lines in this case.
Thanks in advance.
 

Re: Ethernet dataflow

hi

ethernet phy doesnt carry digital signals its pure analog. the digital signals are encoded and are carried in differential format. for this traffic u dont need the ground reference to be carried all along the path of the ethernet. the signal is sensed by the differential amplifier. if u understand the PHY and PCS layers of 100baseT u can find what it is...

for example,
bit '1' is transmitted as '1' in the + line and '0' in the - line
bit '0' is transmitted as '0' in the + line and '1' in the - line

...i think im clear
 
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