Intel IXF1104 manual MDI State, Datasheet

Models: IXF1104

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Figure 22. MDI State

IXF1104 Quad-Port 10/100/1000 Mbps Ethernet Media Access Controller

Figure 22. MDI State

 

 

MDOE = 0

Idle

 

MDO = 0

 

 

MDC_EN = 0

Go = 1

 

 

Cnt > 32

Cnt < 32

 

Preamble

MDOE = 1

 

MDO = 1

 

 

 

 

MDC_EN = 1

Cnt = 32

 

 

Cnt > 2

Cnt < 2

 

Start Bits

MDOE = 1

 

MDO = Reg_Bit_St(Cnt)

 

 

 

 

MDC_EN = 1

Cnt = 2

 

 

Cnt > 2

Cnt < 2

 

Op Code

MDOE = 1

 

MDO = Reg_Bit_Op(Cnt)

 

 

 

 

MDC_EN = 0

Cnt = 2

 

 

Cnt > 5

Cnt < 5

 

Phy Addr

MDOE = 1

 

MDO = Reg_Bit_PA(Cnt)

 

 

 

 

MDC_EN = 1

Cnt = 5

 

 

Cnt > 5

Cnt < 5

 

Reg Addr

MDOE = 1

 

 

MDO = Reg_Bit_RA(Cnt)

 

 

 

 

MDC_EN = 1

Cnt = 5

 

 

Cnt > 2

Cnt < 2

 

Turn Around

 

MDOE = Wr_Op

 

MDO = Reg_Bit_WO(Cnt)

 

 

 

 

MDC_EN = 1

Cnt = 2

 

 

 

Cnt < 16

 

Data

 

MDOE = Wr_Op

 

MDO = Data(Cnt)

Cnt > 16

 

 

MDC_EN = 1

or (Cnt = 16 and

 

 

 

Go = 0)

 

 

Cnt = 16 And Go = 1

 

 

Datasheet

101

Document Number: 278757

Revision Number: 007

Revision Date: March 25, 2004

Page 101
Image 101
Intel IXF1104 manual MDI State, Datasheet