DP83261AVF datasheet(77/132 Pages) NSC

77 / 132 page

70 Signal Descriptions (Continued)

732 Signals

All output signals change relative to the rising edge of the Local Byte Clock signal (provided by the Clock Distribution Device)

and are active high

7321 Indication Data

Symbol

Description

MIP

MAC Indicate Parity

Odd parity on MID7 – 0 Only valid with Data and Status Indicators

MID7 – 0

74 – 76

MAC Indicate Data

79–83

Data

Indicates data is being presented on MID7 – 0 between the rising edge of Frame Control Receive

FCRCVD and the rising edge of one of the following signals

Ending Delimiter Received (EDRCVD)

Token Received (TKRCVD)

Format Error (FOERROR)

Frame Strip (FRSTRP)

or MAC Reset (MACRST)

Status

Indicates Status Indicators are being presented on MID7 – 0 while Ending Delimiter Received

(EDRCVD) or Token Received (TKRCVD) is asserted

The Contents and interpretation of MID7 – 0 are given in Table 7-3

TABLE 7-3 MAC Indication Coding

Contents

Value

MID(7 – 4)

MID(3 – 0)

Condition

Data

Between RCSTART and

EDRCVD or

TKRCVD or

FRSTRP or

FOERROR or

254

MACRST

255

Status

with EDRCVD or TKRCVD

with EDRCVD

5 6 or 7

with EDRCVD

undefined

otherwise

DP83261AVF Datasheet(PDF) 77 Page - National Semiconductor (TI)

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