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Atmel SpW-10X user manual SpaceWire Router, User Manual, Preliminary

Models: SpW-10X

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Page 102

Packets can timeout and be spilled in a SpaceWire network without the destination receiving any notification of this. Packets with errors (e.g. parity error) can arrive at a destination terminated by an EEP. In a very special case it is also possible to receive an error free packet terminated by an EEP. It is important that the destination node is able to handle these cases.

SpW-10X	Ref.:	UoD_SpW-10X_
SpaceWire Router		UserManual
SpaceWire Router	Issue:	3.4
User Manual	Issue:	3.4
User Manual	Date:	11th July 2008

WARNING

Packets can timeout and be spilled in a SpaceWire network without the destination receiving any notification of this. Packets with errors (e.g. parity error) can arrive at a destination terminated by an EEP. In a very special case it is also possible to receive an error free packet terminated by an EEP. It is important that the destination node is able to handle these cases.

Preliminary

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Atmel SpW-10X user manual SpaceWire Router, User Manual, Preliminary

Contents

Atmel Part No IssueSpaceWire Router AT7910EDocument Change log SpaceWire RouterSpW-10X User ManualUser Manual SpaceWire RouterSpW-10X PreliminarySpW-10X CONTENTSSpaceWire Router User ManualSpW-10X SpaceWire Router7. SPACEWIRE ROUTER PACKET TYPES User ManualSpW-10X SpaceWire Router8.1.6 Setting the SpaceWire port transmit data rate User ManualUser Manual SpaceWire RouterSpW-10X Preliminary13.3.1 Data Strobe Reset Waveform SpaceWire Router12.2.9 Status / Power On Configuration Interface 13.3.2 Data Strobe Disable WaveformISSUE 1.1 TO ISSUE SpaceWire RouterISSUE 1.2 TO ISSUE ISSUE 1.0 TO ISSUESpW-10X LIST OF FIGURESSpaceWire Router User ManualUser Manual SpaceWire RouterSpW-10X PreliminarySpW-10X LIST OF TABLESSpaceWire Router User ManualUser Manual SpaceWire RouterSpW-10X PreliminarySpaceWire Router 1. INTRODUCTION1.1 TERMS, ACRONYMS AND ABBREVIATIONS SpW-10XLVDSOwnersManual4thEdition2008.pdf SpW-10X SpaceWire Router1.2 DOCUMENTS 1194.pdf#page=1SpaceWire Router 2. USER APPLICATIONS2.1 STAND-ALONE ROUTER SpW-10XSpaceWire Router 2.2 NODE INTERFACE2.3 EMBEDDED ROUTER SpW-10XSpW-10X 2.4 EXPANDING THE NUMBER OF ROUTER PORTSSpaceWire Router User ManualSpW-10X SpaceWire RouterFigure 2-4 shows a pair of SpW-10X routers connected together using the external FIFO ports to provide a 16 port router. A small amount of external logic is required to connect the external FIFO ports in this way. Note that the bandwidth between the two SpW-10X devices is limited by the two external FIFO ports used to interconnect them. Each FIFO port can handle one SpaceWire packet at a time in each direction User ManualSpW-10X SpaceWire RouterFigure 2-5 shows two SpW-10X router devices interconnected using two of the SpaceWire ports on each router. This leaves twelve SpaceWire ports for connection to other SpaceWire nodes. The External FIFO ports of each router are used to connect to user logic in an FPGA or to a processing device User ManualSpW-10X 3. FUNCTIONAL OVERVIEWSpaceWire Router User ManualSpaceWire Router 3.1 SPACEWIRE PORTS3.2 EXTERNAL PORTS SpW-10X3.5 ROUTING CONTROL LOGIC AND CROSSBAR 3.3 CONFIGURATION PORT3.4 ROUTING TABLE SpaceWire RouterSpaceWire Router 3.6 TIME-CODE PROCESSING3.7 CONTROL/STATUS REGISTERS SpW-10XSpW-10X 4. PIN LOCATIONSSpaceWire Router User ManualUser Manual SpaceWire RouterSpW-10X PreliminaryUser Manual SpaceWire RouterSpW-10X PreliminaryUser Manual SpaceWire RouterSpW-10X PreliminaryUser Manual SpaceWire RouterSpW-10X PreliminaryUser Manual SpaceWire RouterSpW-10X PreliminarySpaceWire Router 5.1 GLOBAL SIGNALS5. DEVICE INTERFACE SpW-10XSpW-10X 5.2 SPACEWIRE SIGNALS 5.2.1 SpW-10X SpaceWire SignalsSpaceWire Router User ManualUser Manual SpaceWire RouterSpW-10X PreliminaryUser Manual SpaceWire RouterSpW-10X PreliminarySpW-10X 5.2.2 SpaceWire Input Fail Safe ResistorsSpaceWire Router User ManualUser Manual SpaceWire RouterSpW-10X PreliminarySpaceWire Router 5.2.3 Operation with 5V Powered LVDS Devices5.3 EXTERNAL PORT DATA SIGNALS SpW-10XUser Manual SpaceWire RouterSpW-10X PreliminarySpW-10X 5.4 TIME-CODE SIGNALSSpaceWire Router User ManualUser Manual SpaceWire RouterSpW-10X PreliminarySpW-10X 5.5 STATUS INTERFACE SIGNALSSpaceWire Router User ManualSpW-10X 5.6 RESET CONFIGURATION SIGNALSSpaceWire Router User ManualSpW-10X SpaceWire RouterSignal User ManualUser Manual SpaceWire RouterSpW-10X Preliminary5.7.3 LVDS Reference 5.7 POWER, GROUND, PLL AND LVDS SIGNALS 5.7.1 General5.7.2 Decoupling 5.7.4 PLL External ComponentsUser Manual SpaceWire RouterSpW-10X PreliminarySpaceWire Router 6. INTERFACE OPERATIONS6.1 EXTERNAL PORT INTERFACE OPERATION SpW-10XSpW-10X 6.2 TIME-CODE INTERFACE OPERATIONSpaceWire Router User ManualSpW-10X 6.3 STATUS INTERFACE OPERATIONSpaceWire Router User ManualUser Manual SpaceWire RouterSpW-10X PreliminarySpW-10X 6.4 RESET CONFIGURATION INTERFACE OPERATIONSpaceWire Router User ManualSpaceWire Router 7. SPACEWIRE ROUTER PACKET TYPES7.1 PACKET ADDRESSES SpW-10XSpaceWire Router 7.2 PACKET PRIORITY7.3 PACKET HEADER DELETION SpW-10XSpW-10X 7.4 INVALID ADDRESSESSpaceWire Router User Manual7.5 DATA PACKETS 7.6 COMMAND PACKETS7.6.1 Supported Commands SpaceWire RouterSpW-10X 7.6.2 Read CommandSpaceWire Router User ManualCommand Preliminary57SpaceWire Router SpW-10XUser Manual SpaceWire RouterSpW-10X PreliminaryCommand SpaceWire RouterBits in Packet Type / Command / Source Address Path Length Byte SpW-10XSpW-10X 7.6.3 Read Incrementing CommandSpaceWire Router User ManualUser Manual SpaceWire RouterSpW-10X PreliminaryUser Manual SpaceWire RouterSpW-10X PreliminaryUser Manual SpaceWire RouterSpW-10X PreliminaryUser Manual SpaceWire RouterSpW-10X PreliminarySpW-10X 7.6.4 Read Modify Write CommandSpaceWire Router User ManualConfig Port Address Preliminary66SpaceWire Router SpW-10XUser Manual SpaceWire RouterSpW-10X PreliminaryCommand Mask SpaceWire RouterCommand Data Mask AND Command Data OR NOT Mask and Register DataUser Manual SpaceWire RouterSpW-10X PreliminarySpW-10X 7.6.5 Write CommandSpaceWire Router User ManualUser Manual SpaceWire RouterSpW-10X PreliminaryUser Manual SpaceWire RouterSpW-10X PreliminaryUser Manual SpaceWire RouterSpW-10X PreliminarySpW-10X 7.6.6 Command Error ResponseSpaceWire Router User ManualUser Manual SpaceWire RouterSpW-10X PreliminarySpaceWire Router 7.6.7 Command Packet Cyclic Redundancy Check7.6.8 Local Source Path Address SpW-10XSpW-10X 7.6.9 Source Path Address FieldSpaceWire Router User ManualSpW-10X 7.6.10 Command Packet Fill BytesSpaceWire Router User Manual8. CONTROL LOGIC AND OPERATIONAL MODES 8.1 SPACEWIRE LINK CONTROL8.1.1 Default operating mode 8.1.2 Auto-StartSpaceWire Router 8.1.4 Link-Disable8.1.5 Automatic deactivate driver mode SpW-10XUser Manual SpaceWire RouterSpW-10X Preliminary100MHz + 20MHz * FEEDBDIV ⎞ ⎞ 8.1.6 Setting the SpaceWire port transmit data rateTXRATE +1 DataRate = ⎜SpaceWire Router 10MbitRate =TX 10MbitDIV +1 SpW-10XSpW-10X 8.2 GLOBAL SPACEWIRE LINK CONTROLSpaceWire Router User ManualSpaceWire Router 8.2.1 Start on request mode8.2.2 Disable on Silence mode SpW-10X8.3.2 Arbitration 8.3.1 Packet address error8.3 CONTROL LOGIC AND ROUTING SpaceWire RouterSpW-10X 8.3.2.1 Arbitration of packets with matching prioritySpaceWire Router User ManualSpW-10X 8.3.2.2 Arbitration of packets with matching prioritySpaceWire Router User ManualSpW-10X 8.3.2.3 Arbitration of packets with different prioritySpaceWire Router User ManualSpW-10X 8.3.2.4 Arbitration of packets with different prioritySpaceWire Router User ManualUser Manual SpaceWire RouterSpW-10X Preliminary8.3.3.1 Normal Group adaptive routing 8.3.3.2 Group adaptive routing when busy8.3.3 Group Adaptive Routing SpaceWire RouterSpW-10X SpaceWire Router 8.3.3.3 Group adaptive routing when ports not ready8.3.4 Loop-back with Self-Addressing User ManualUser Manual SpaceWire RouterSpW-10X PreliminarySpaceWire Router 8.3.5 Packet Blocking8.3.5.1 Blocked destination SpW-10XSpW-10X SpaceWire RouterIn blocking allowed mode the network path is blocked until the destination node starts to accept data again. Packets waiting to use the network path will wait indefinitely User ManualSpW-10X SpaceWire RouterWhat happens when the routers are in Watchdog Timer mode and a destination becomes blocked is illustrated in Figure 8-17to Figure 8-20. Only SpaceWire ports 1 to 6 are shown for clarity User ManualSpW-10X 8.3.5.2 Stalled sourceSpaceWire Router User ManualUser Manual SpaceWire RouterSpW-10X PreliminaryUser Manual SpaceWire RouterSpW-10X PreliminarySpW-10X 8.3.5.3 Waiting for an output portSpaceWire Router User ManualSpW-10X SpaceWire RouterPackets can timeout and be spilled in a SpaceWire network without the destination receiving any notification of this. Packets with errors e.g. parity error can arrive at a destination terminated by an EEP. In a very special case it is also possible to receive an error free packet terminated by an EEP. It is important that the destination node is able to handle these cases User ManualSpaceWire Router 9. REGISTER DEFINITIONS9.1 INTERNAL MEMORY MAP SpW-10XSpW-10X 9.2 REGISTER ADDRESSES SUMMARYSpaceWire Router User ManualSpW-10X 9.3 GROUP ADAPTIVE ROUTING TABLE REGISTERSSpaceWire Router User ManualUser Manual SpaceWire RouterSpW-10X PreliminaryUser Manual SpaceWire RouterSpW-10X PreliminarySpaceWire Router 9.4 PORT CONTROL/STATUS REGISTERS9.4.1 Generic port control/status register fields SpW-10XSpW-10X 9.4.2 Configuration port control/status register fieldsSpaceWire Router User ManualUser Manual SpaceWire RouterSpW-10X PreliminaryUser Manual SpaceWire RouterSpW-10X PreliminarySpW-10X 9.4.3 SpaceWire port control/status register bitsSpaceWire Router User ManualUser Manual SpaceWire RouterSpW-10X PreliminaryUser Manual SpaceWire RouterSpW-10X Preliminary9.5.1 Network Discovery Register 9.4.4 External port control/status register bits9.5 ROUTER CONTROL/STATUS REGISTERS SpaceWire RouterSpW-10X 9.5.2 Router Identity RegisterSpaceWire Router User ManualSpW-10X 9.5.3 Router Control RegisterSpaceWire Router User ManualUser Manual SpaceWire RouterSpW-10X PreliminaryUser Manual SpaceWire RouterSpW-10X PreliminarySpW-10X 9.5.4 Error active RegisterSpaceWire Router User ManualSpW-10X 9.5.5 Time-Code RegisterSpaceWire Router User ManualSpW-10X 9.5.6 Device Manufacturer and Chip ID RegisterSpaceWire Router User ManualSpaceWire Router 9.5.8 Time-Code Enable Register9.5.7 General Purpose Register SpW-10XSpW-10X 9.5.9 Transmit Clock Control RegisterSpaceWire Router User ManualSpW-10X SpaceWire RouterTXDIV Not used Enable clock Tx10MbitDIV Not used User ManualUser Manual SpaceWire RouterSpW-10X Preliminary9.5.12 Empty packets 9.5.10 Destination Key Register9.5.11 Unused Registers and Register Bits 9.6 WRITING TO A READ-ONLY REGISTER10.2 SERIAL SIGNALS TIMING PARAMETERS 10. SWITCHING CHARACTERISTICS10.1 CLOCK AND RESET TIMING PARAMETERS SpaceWire RouterSpW-10X 10.3 EXTERNAL PORT TIMING PARAMETERSSpaceWire Router User ManualSpW-10X 10.4 TIME-CODE INTERFACE TIMING PARAMETERSSpaceWire Router User ManualSpW-10X 10.5 ERROR/STATUS INTERFACE TIMING PARAMETERSSpaceWire Router User ManualUser Manual SpaceWire RouterSpW-10X Preliminary10.6.1 Clock Periods 10.6.2 Switching Latency10.6 LATENCY AND JITTER 10.6.3 Router LatencySpW-10X 10.6.4 Time-code LatencySpaceWire Router User ManualSpaceWire Router 10.6.5 Time-code Jitter10.6.6 200M bits/s Input and Output Bit Rate Example SpW-10XSpaceWire Router 11. ELECTRICAL CHARACTERISTICS11.1 DC CHARACTERISTICS SpW-10XSpaceWire Router 11.2 ABSOLUTE MAXIMUM RATINGS11.3 RELIABILITY INFORMATION SpW-10XSpaceWire Router 12.1 EXAMPLE CIRCUIT DIAGRAM12. APPLICATION GUIDELINES SpW-10XUser Manual SpaceWire RouterSpW-10X Preliminary12.2.6 SpaceWire 12.2.3 Chip Test Signals12.2.4 Power and Decoupling 12.2 PCB DESIGN AND LAYOUT GUIDELINES12.2.8 Time-code Interface 12.2.9 Status / Power On Configuration Interface12.2.7 External Ports SpaceWire RouterSpW-10X 12.2.10 PLLSpaceWire Router User Manual13.2 WARNINGS 13. ANOMALIES AND WARNINGS13.1 ANOMALIES SpaceWire RouterUser Manual SpaceWire RouterSpW-10X PreliminarySpaceWire Router 13.3 RESET ANOMALY13.3.1 Data Strobe Reset Waveform SpW-10XUser Manual SpaceWire RouterSpW-10X PreliminarySpaceWire Router 13.3.2 Data Strobe Disable Waveform13.3.3 Reset Anomaly Workarounds SpW-10XSpaceWire Router 13.4 PARITY ERROR ANOMALY 13.4.1 Parity Error Action13.4.2 Parity Error Anomaly SpW-10XSpW-10X 13.4.3 Parity Error WorkaroundSpaceWire Router User ManualSpaceWire Router 14. TECHNICAL SUPPORTEmail assp-applab.hotline@nto.atmel.com SpW-10X15.3 ISSUE 3.1 TO ISSUE 15.1 ISSUE 3.3 TO ISSUE15.2 ISSUE 3.2 TO ISSUE 15. DOCUMENT CHANGESSpaceWire Router 15.4 ISSUE 3.0 TO ISSUE15.5 ISSUE 2.5 TO ISSUE SpW-10X15.8 ISSUE 2.2 TO ISSUE 15.6 ISSUE 2.4 TO ISSUE15.7 ISSUE 2.3 TO ISSUE SpaceWire Router15.11 ISSUE 1.7 TO ISSUE 15.9 ISSUE 2.1 TO ISSUE15.10 ISSUE 2.0 TO ISSUE 15.12 ISSUE 1.6 TO ISSUESpaceWire Router 15.17 ISSUE 1.1 TO ISSUE15.18 ISSUE 1.0 TO ISSUE SpW-10X