DP83261 datasheet(130/132 Pages) NSC

130 / 132 page

Appendix A Ring Engine State Machines (Continued)

(4) Repeat

Actions (T1)

IF nIRPT

(Higher Claim

lOther BeaconlOther MAC)

(Ring Operational

lTXClass i nonelnLate)

THEN SET TXClass

4 none

SET T Opr

4 T Max RESET TRT 4 T Opr SET Late

IF Ring Operational

THEN SET RELRRing Operational Reset

CLEAR Late Count

Ring Operational

Still Usable

Ring Operational

nRQSend

((RQClass

4 synchronous

nRELRBeacon Received)l

(RQClass

4 asynchronous

nLate

RQCapture

4 FCrL

(RQClass i priority

lTRT k T Pri RQClassPriority )

n(RQClass 4 restricted

(RELRBeacon Received

lRELRClaim Receivedl

(RQClassCapture

4 nonrestricted

nRbeginOK)))))

(5) TX

Data

Actions (T2)

IF Lmax

4 expired

RQReady

THEN RESET Lmax

SET Used

IF nRQReady

THEN RESET Lmax

CLEAR Used

IF Abort

THEN SET TXAbort

IF Still Usable

THEN SET TXReady

ELSE SET TXPass

After ED

SET TXED

IF Still Usable

THEN SET TXReady

ELSE SET TXPass

(6) Issue

Actions (T3)

Always

IF My Void

THEN CLEAR Void Strip

(7) Claim

Actions (T4)

CLEAR FunctionClaim Request

(8) TX

Beacon

Actions (T5)

CLEAR FunctionBeacon Request

(9) TX

Void

Actions (T7)

Always

IF My Void

Vsent

THEN CLEAR Void Strip

130

DP83261 Datasheet(PDF) 130 Page - National Semiconductor (TI)

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