DP83950B datasheet(48/80 Pages) NSC

48 / 80 page

60 Hub Management Support (Continued)

Packet Status Register 0

PCOMPD

resv

Bit

Symbol

Description

resv

RESERVED FOR FUTURE USE

This bit is currently undefined management software should not

examine the state of this bit

PCOMPD

PACKET COMPRESSION DONE

If packet compression is utilized this bit informs the user that

compression was performed ie the packet was long enough to require compression

D(72)

A(50)

RIC ADDRESS (50)

This address is defined by the user and is supplied when writing to the RIC Address

Packet Status Register 1

CRCER

FAE

COL

CLN

PA3

PA2

PA1

PA0

Bit

Symbol

Description

D(30)

PA(30)

PORT ADDRESS

This field defines the port which is receiving the packet

CLN

CLEAN RECEIVE

This bit is asserted from the start of reception and is deasserted if a collision occurs

within a window from the start of reception to the end of the 13th byte after SFD detection If no SFD is

detected the window is extended to the end of reception

COL

COLLISION

If a receive or transmit collision occurs during packet repetition the collision bit is asserted

FAE

FRAME ALIGNMENT ERROR

This bit is asserted if a Frame Alignment Error occurred in the repeated

packet

CRCER

CRC ERROR

This bit is asserted if a CRC Error occurred in the repeated packet

This status flag should not be tested if the COL bit is asserted since the error may be simply due to the

collision

DP83950B Datasheet(PDF) 48 Page - National Semiconductor (TI)

DP83950B Datasheet(HTML) 48 Page - National Semiconductor (TI)

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