DP83950B datasheet(71/80 Pages) NSC

71 / 80 page

90 AC and DC Specifications (Continued)

COLLISION TIMINGAUI PORTS

Collision activity propagation start up and end delays for ports in non 10BASE-T mode

RECEIVE COLLISION TIMING

TLF11096 – 28

Number

Symbol

Parameter

Min

Max

Units

T32a

cdacolna

CD Active to COLN Active (Note 1)

T33a

cdicolni

CD Inactive to COLN Inactive

215

T39

colnajs

COLN Active to Start of Jam

400

T40

colnije

COLN Inactive to End of Jam (Note 2)

800

Note 1

PKEN assumed high

Note 2

Assuming reception ended before COLN goes inactive TW2 is included in this parameter Assuming ACTNd to ACTNs delay is 0

Note

In these diagrams the Inter-RIC and Management Busses are shown using active high signals active low signals may also be used See Section 55 Mode

Load Operation

COLLISION TIMING10BASE-T PORTS

Collision activity propagation start up and end delays for ports in 10BASE-T mode

TLF11096 – 29

Number

Symbol

Parameter

Min

Max

Units

T30t

colaanya

Collision Active to ANYXN Active

800

T31t

colianyi

Collision Inactive to ANYXN Inactive (Note 1)

400

Note 1

TX collision extension has alreay been performed and no other port is asserting ANYXN

Note

In these diagrams the Inter-RIC and Management Busses are shown using active high signals active low signals may also be used See Section 55 Mode

Load Operation

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