Atmel SpaceWire Router SpW-10X User Manual

Page of 155
Ref.:   UoD_SpW-10X_ 
UserManual
 
Issue:  3.4 
  
 
 
SpW-10X 
SpaceWire Router 
User Manual 
Date:  11
th
 July 2008 
 
 
Preliminary 
14
 
1. INTRODUCTION 
This document is a technical reference for the implementation and operation of the SpW-10X 
SpaceWire Router device (Atmel part number AT7910E).  
Note: Detailed timing information for the ASIC implementation will be available in 1Q08. 
1.1  TERMS, ACRONYMS AND ABBREVIATIONS 
3V3 
3.3 volt interface levels. 
AAe 
Austrian Aerospace GmbH 
ACK Acknowledge 
AD Applicable 
Document 
CLK 
Clock (Input clock to the SpaceWire router) 
CRC 
Cyclic Redundancy Check 
DC Direct 
Current 
ECSS 
European Cooperation for Space Standarization 
EEP 
Error end of packet, used to denote an error occurred during packet transfer 
EOP 
End of packet used to denote a normal end of packet in SpaceWire 
FIFO 
First in - First out buffer used to transfer data between logic 
FPGA 
Field Programmable Gate Array 
GND Ground 
LVDS 
Low voltage differential signalling 
NACK 
Negative acknowledge (error acknowledge) 
PLL 
Phase Locked Loop 
RD Read 
RMAP 
Remote Memory Access Protocol 
RST 
Asynchronous reset to the SpaceWire router 
SpW SpaceWire 
TBA 
To be advised 
TBC 
To be confirmed 
UoD 
University of Dundee