DS3875 datasheet(2/58 Pages) NSC

2 / 58 page

Table of Contents

10 INTRODUCTION TO FUTUREBUSa

20 INTRODUCTION TO FUTUREBUSa ARBITRATION

21 The Arbitration States

30 INTRODUCTION TO DS3875 ARBITRATION CONTROLLER

31 Using the DS3875 in 8961 Compliant Mode

40 DS3875 INTERFACES

50 ARBITRATING FOR FUTUREBUSa

51 UnrestrictedRestricted Modes of Operation

52 The Arbitration Number and Arbitration Circuit

521 Priority Field (PR)

522 Round Robin Field (RR)

523 Unique Field (U)

53 Arbitration Categories

531 Competitor for the Parallel Bus

532 Competitor to Send a Message

5321 Using an External FIFO to Store Messages

533 By-Stander

534 By-Stander who decides to invoke Preemption

535 Master

536 Master Elect

54 Futurebusa Optional Means of Arbitration

541 Idle Bus Arbitration (IBA)

5411 Masters Support Circuitry to Enable IBA

5412 Modules Support Circuitry to Participate in IBA

542 Parking

55 The Arbitration Phases

551 Phase 0 Idle Phase

5511 Phase 0 Normal Arbitration Events That Cause a Transition to Phase 1

5512 Phase 0 Idle Bus Arbitration Events That Cause a Transition to Phase 1

5513 Phase 0 Parking

552 Phase 1 Decision Phase

5521 Phase 1 Idle Bus Arbitration Events That Cause a Transition to Phase 2

553 Phase 2 Competition Phase

5531 Phase 2 Idle Bus Arbitration Events That Cause a Transition to Phase 3

554 Phase 3 Error Check Phase

5541 Phase 3 Idle Bus Arbitration Events That Cause a Transition to Phase 4

555 Phase 4 Master Release Phase

556 Phase 5 Tenure Transfer Phase

60 THE DS3875 ARBITRATION CONTROLLER SUPPORT OF LOCKING AND UNLOCKING

70 REGISTER DESCRIPTION

71 ALL1S

72 TCXN0

73 TCXN1

74 TXMSG

75 CTRL1

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