LAN83C183 데이터 시트보기 (PDF) - SMSC -> Microchip

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LAN83C183

10/100 Mbps TX/FX/10BT Fast Ethernet Physical Layer Device (PHY)

SMSC -> Microchip 

Interframe

Gap

Figure 1.2 100BASE-TX/FX and 10BASE-T Frame Format

PREAMBLE

Ethernet MAC Frame

SFD

DA

SA

Interframe

LN LLC Data FCS

Gap

IDLE

100BASE-TX Data Symbols

SSD PREAMBLE SFD

DA

SA

LN LLC DATA FCS ESD IDLE

IDLE = [ 1 1 1 1 ...]

SSD = [ 1 1 0 0 0 1 0 0 0 1 ]

PREAMBLE = [ 1 0 1 0 ...] 62 Bits Long

SFD = [ 1 1 ]

DA, SA, LN, LLC DATA, FCS = [ DATA ]

ESD = [ 0 1 1 0 1 0 0 1 1 1 ]

Before/After

4B5B Encoding,

Scrambling, and

MLT3 Coding

IDLE

100BASE-FX Data Symbols

SSD PREAMBLE SFD

DA

SA

LN LLC DATA FCS ESD IDLE

IDLE

IDLE = [ 1 1 1 1 ...]

SSD = [ 1 1 0 0 0 1 0 0 0 1 ]

PREAMBLE = [ 1 0 1 0 ...] 62 Bits Long

SFD = [ 1 1 ]

DA, SA, LN, LLC DATA, FCS = [ DATA ]

ESD = [ 0 1 1 0 1 0 0 1 1 1 ]

Before/After

4B5B Encoding

PREAMBLE

10BASE-T Data Symbols

SFD

DA

SA

LN LLC DATA FCS SOI IDLE

IDLE = [ No Transitions ]

PREAMBLE = [ 1 0 1 0 ...] 62 Bits Long

SFD = [ 1 1 ]

DA, SA, LN, LLC DATA, FCS = [ DATA ]

SOI = [ 1 1 ] With No MID Bit

Transition

Before/After

Manchester

Encoding

SMSC DS – LAN83C183

13

Rev. 12/14/2000

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