MII 4- MAC PHI. 4- MII, , MAC-. PHI MAC 4- , , PHI. PHI , MAC . MAC- PHI .
, , PHI PHI .
4B/5B
㳿 10Mbit Ethernet . PHY FX/TX 4B/5B. 4 MAC- 5- . .
, . 1 0 . 5- 16- 4- , 4- 5- , 0 1- .
MAC 100/, 4B/5B 125/, PHI 8 .
32- 5- 16, 16 4B/5B . FX/TX , 10Base-T, .
Idle (11111). . , , .
. Idle
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, , :
Idle | JK | - | SFD | DA | SA | L | CRC | T | Idle |
Ethernet Idle Start Delimiter JK, Idle T ( ).
NRZI
ϳ 4- MAC- 5- PHY, , 璺 . PHY FX PHY TX NRZI (Non return to Zero Invert to ones 1) MLT-3.
NRZI 1.
NRZ, 1 0 2- . NRZI 2 , , , . . 1, . 0, . , 0-. 4B/5B , 3- . :
NRZI NRZ 1 0 .