DP83955AV datasheet(32/54 Pages) NSC

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50 Functional Description (Continued)

TABLE 5-4 Status Display Pin Functions in Maximum Mode

Signal

Function in MAXIMUM MODE

Pin Name

Provides status information concerning the Link Integrity status of 10BASE-T segments This signal should be

connected to the data inputs of the chosen pair of 74LS259 latches

Provides status information indicating if there is a collision occurring on one of the segments attached to this LERIC

This signal should be connected to the data inputs of the chosen pair of 74LS259 latches

Provides status information indicating if one of this LERIC’s ports is receiving data or a collision packet from its

segment This signal should be connected to the data inputs of the chosen pair of 74LS259 latches

Provides status information indicating that the LERIC has experienced a jabber protect condition Additionally it

denotes which of its ports are partitioned This signal should be connected to the data inputs of the chosen pair of

74LS259 latches

Provides status information indicating if one of this LERIC’s ports is receiving data of inverse polarity This status

output is only valid if the port is configured to use its internal 10BASE-T transceiver The signal should be connected to

the data inputs of the chosen pair of 74LS259 latches

D(75)

These signals provide the repeater port address corresponding to the data available on D(40)

STR

This signal is the latch enable for the 74LS259 latches

DP83955AV 데이터시트(PDF) 32 Page - National Semiconductor (TI)