Preliminary66 | Atmel SpW-10X instruction

			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

						No
32-bit read-modify-write		S		4		No
						-
64-bit read-modify-write		NS		-		-

Word or byte address		32-bit aligned

Accepted Logical Addresses		0xFE

Accepted destination keys		0x20 at power on

Accepted address ranges		0x00 0000 0000 – 0x00 0000 0109

Incrementing address		No

The RMAP read-modify-write command is supported by the SpaceWire router. The read modify write command is used to set or reset a single or number of bits in a router register. The Read-Modify-Write command is useful when it is desirable to set a link register setting without upsetting the other settings in one command, i.e. set the start bit without modifying the data rate.

In Figure 7-7 the first byte received by the SpaceWire router configuration logic is the port address followed by the destination logical address. Fields which are depicted in bold text are expected values. Fields which are shaded are optional.

First byte transmitted

Config Port Address

00h

Destination Logical Address

Protocol Identifier

Packet Type, Command

Destination Key

FEh

01h

Source Path Addr Len

Source Path Address

Source Path Address

Source Path Address

Source Path Address

Source Logical Address

Transaction Identifier (MS)

Transaction Identifier (LS)

Extended RMW Address

00h

RMW Address (MS)

RMW Address

RMW Address

RMW Address (LS)

00h

00h

Data +Mask Length (MS)

Data + Mask Length

Data + Mask Length (LS)

Header CRC

00h

00h

08h

Data (MS)

Data

Data

Data (LS)

Mask (MS)

Mask

Mask

Mask (LS)

Data/Mask CRC

EOP

Last byte transmitted

Bits in Packet Type / Command / Source Address Path Length Byte

MSB

LSB

0

1

0

1

1

1

Source Path

Source Path

Address Length

Address Length

Packet Type

Command

Source Path Address Length

Figure 7-7 Read-Modify-Write Command Packet Format

Preliminary66

Image 66

Atmel SpW-10X user manual Preliminary66

Contents

Issue Date Th July UoDSpW-10XUserManual Date Issue Comments Author Ref. UoDSpW-10X11th July SpW-10X Contents Control Logic and Operational Modes Global Spacewire Link Control 103 128 136138 143 150151 15.16 List of Figures 100 List of Tables Able 9-7 E Xternal P ORT C ONTROL/S Tatus F Ields Introduction TERMS, Acronyms and Abbreviations Date 11th July DocumentsRef. UoDSpW-10X UserManual Applicable Documents Document Number Document Title User Applications STAND-ALONE Router Node Interface Embedded Router Issue Date 11th July Expanding the Number of Router Ports Expanding the number of SpaceWire Ports SpW-10X Functional Overview Spacewire Ports External Ports Configuration Port Routing TableRouting Control Logic and Crossbar TIME-CODE Processing CONTROL/STATUS Registers Pin Signal Type Description PIN Locations VSSA2 GND PFOLVDS33Z EXTOUTDATA90 PO44F EXTOUTDATA108 PO44F EXTTIMEOUT6 PO44F Global Signals Device Interface TestIOEn Spacewire SignalsSpW-10X SpaceWire Signals TestEn DOUTMinus2 DOUTMinus1DOUTPlus2 DOUTPlus3 DINPlus2 11th July DINPlus1DINMinus1 DINMinus2 SpaceWire Input Fail Safe Resistors Lvds Receiver Fail-Safe Resistors SpW-10X External Port Data Signals UserManual Issue Date 11th JulyExternal Port Interface Signals PinNo Dir Description Type EXT9INDATA5 TIME-CODE Signals Time-Code Signals PinNo Dir Description TypeSelexttime and the EXTTIMEIN70 Exttickin the value on EXTTIMEIN70 is EXTTIMEIN70 inputExttickout is asserted Power on Configuration Status Interface SignalsLink error indication Signals PinNo Dir Description Type Normal Operation Reset Configuration Signals Configuration interface timing specification Maps to PORTXRATE20 11th July Reset Configuration Signals Dir DescriptionFeedbdiv at reset Maps to Porstartonreqn Decoupling POWER, GROUND, PLL and Lvds SignalsGeneral Lvds Reference PLL with external components Interface Operations External Port Interface Operation External port read timing specification TIME-CODE Interface Operation Status Interface Operation Time-Code Output Interface Status Output Bits Reset Configuration Interface Operation Reset configuration interface timing specification Spacewire Router Packet Types Packet Addresses Packet Priority Packet Header DeletionPacket Priority Mapping Packet Address Physical Port type Invalid Addresses Command Packets Supported CommandsData Packets Read Command Issue Date Th July Read Single Address Characteristics Read Single Address Command Format SpW-10X EOP Read Incrementing Command Issue Date Th July Read Incrementing Address Characteristics Data Length MS 11th July 00h Read Modify Write Command 11 Read-Modify-Write Command Characteristics Preliminary66 RMW Read-Modify-Write example operation FEh 00h Write Command 14 Write Command Characteristics FEh 01h CRC MSB Command Error Response StatusCode SpW-10X Command Packet Cyclic Redundancy Check Local Source Path Address Source Path Address Field Command Packet Fill Bytes Date 11 th July Control Logic and Operational Modes Spacewire Link ControlDefault operating mode Auto-Start Link-Disable Automatic deactivate driver mode Deactivate driver operating mode Setting the SpaceWire port transmit data rate Txrate +1 Setting SpaceWire Transmit Data Rate TX 10MbitDIV +1 Global Spacewire Link Control Start on request mode Disable on Silence modeCfgstartonreq bit Packet address error Control Logic and RoutingArbitration Arbitration of packets with matching priority Arbitration of three packets with matching priority Arbitration of packets with different priority SpW-10X SpW-10X Group Adaptive Routing 10 Normal group adaptive routing 11 Group adaptive routing when other ports busy Loop-back with Self-Addressing 13 Packet Self-Addressing mode Packet Blocking Blocked destination Blocking Allowed Mode 14 Destination Node Blocked a 16 Destination Node Blocked c Watchdog timer mode 19 Destination Node Blocked Watchdog Mode c Blocking Allowed 21 Source Node Stalled a 100 101 102 Register Definitions Internal Memory MAP Register Addresses Summary 11th July Configuration Register Addresses Group Adaptive Routing Table Registers 106 Issue Date Th July GAR Table Register Description Bits Name Reset Description Read/Write Value Configuration Port Control/Status Register Fields Port CONTROL/STATUS RegistersGeneric port control/status register fields Configuration port control/status register fields 11th July Bits Name Reset Description Read/Write Value 110 111 SpaceWire port control/status register bits SpaceWire Port Control/Status Register Fields 113 114 External port control/status register bits Router CONTROL/STATUS RegistersNetwork Discovery Register Router Identity Register Router Control Register Router Control Register Fields 118 119 Error active Register Error Active Register Fields Time-Code Register Time-Code Register Fields Device Manufacturer and Chip ID Register Time-Code Enable Register General Purpose Register Transmit Clock Control Register 125 126 Empty packets Destination Key RegisterUnused Registers and Register Bits Writing to a READ-ONLY Register Switching Characteristics Clock and Reset Timing ParametersSerial Signals Timing Parameters External Port Timing Parameters External port input Fifo timing parameters TIME-CODE Interface Timing Parameters ERROR/STATUS Interface Timing Parameters Time-code Timectrrst interface 132 Clock Periods Switching LatencyLatency and Jitter Router Latency External port to SpaceWire port Issue Date Th July SpaceWire port to SpaceWire portSpaceWire port to External port Time-code Latency Time-code Jitter 10.6.6 200M bits/s Input and Output Bit Rate Example Electrical Characteristics DC CharacteristicsOperating Conditions Symbol Description Value Units Reliability Information Absolute Maximum Ratings Symbol Description Value UnitsAbsolute Maximum Ratings Reliabilty Information Example Circuit Diagram Application Guidelines 139 PCB Design and Layout Guidelines Status / Power On Configuration Interface External PortsTime-code Interface 12.2.10 PLL PLL Layout Recommendations Anomalies and Warnings Anomalies 144 Reset Anomaly Data Strobe Reset Waveform 146 Data Strobe Disable Waveform Reset Anomaly Workarounds Parity Error Anomaly Parity Error ActionParity Error Anomaly Parity Error Workaround No error end of packet inserted after parity error Technical Support Issue 3.1 to Issue Issue 3.3 to IssueIssue 3.2 to Issue Document Changes Issue 3.0 to Issue Issue 2.5 to Issue Issue 2.4 to Issue Issue 2.3 to IssueIssue 2.2 to Issue Issue 1.7 to Issue Issue 2.1 to IssueIssue 2.0 to Issue Issue 1.6 to Issue Issue 1.1 to Issue Issue 1.0 to Issue