Achronix Speedster22i sBus - Manual (Page 3)

UG047, October 24, 2013 3
Table of Contents
Copyright Info ......................................................................................................................... 2
List of Figures ........................................................................................................................ 5
List of Tables .......................................................................................................................... 6
Preface ............................................................................................................... 7
About this Guide .................................................................................................................... 7
Target Readership (or Audience) ........................................................................................... 7
Reference Documents ........................................................................................................... 7
Conventions used in this Guide ............................................................................................. 8
Terminologies used in this Guide ........................................................................................... 8
Chapter 1
– sBus Overview .............................................................................. 9
Introduction ............................................................................................................................ 9
Operation ............................................................................................................................. 10
Features ............................................................................................................................... 10
Bus .............................................................................................................................................. 10
Accessible IPs .............................................................................................................................. 10
Chapter 2
– sBus Functional Description ...................................................... 11
Port List ................................................................................................................................ 11
Read Operation .................................................................................................................... 11
32-bit Data-width Mode ................................................................................................................ 11
8-bit Data-width Mode .................................................................................................................. 12
Write Operation .................................................................................................................... 13
32-bit Data-width Mode ................................................................................................................ 13
8-bit Data-width Mode .................................................................................................................. 13
Chapter 3
– sBus Interfaces ........................................................................... 15
Master Interface ................................................................................................................... 15
Slave Interface ..................................................................................................................... 16
Chapter 4
– sBus Master Implementation ..................................................... 17
Single Master for Single Slave Implementation .................................................................... 17
Master Specifications for PLL sBus Controller .............................................................................. 17
Master Actions for PLL sBus Controller ........................................................................................ 17