Atmel SpaceWire Router SpW-10X User Manual

Ref.:   UoD_SpW-10X_ 

 

Issue:  3.4 

  

 

Date:  11

 

 

71

 

 

The RMAP write single address, with data verify and acknowledgement command is supported in the 
SpaceWire router. The RMAP write command is used to write a 32 bit value into one of the SpaceWire 
router registers. 

In Figure 7-10 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. 

Packet Type, Command,

Source Path Addr Len

Destination Key

Source Path Address

Source Path Address

Source Path Address

Source Path Address

Source Logical Address

Transaction Identifier (MS)

Transaction Identifier (LS)

Write Address

Write Address (LS)

Header CRC

Data (MSB)

Data

Data

Data (LSB)

Data CRC

Source Path

Address Length

Source Path

Address Length

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

MSB

LSB

Packet Type

Command

Source Path Address Length

 

 

Config Port 

Address  

The configuration port address field routes the packet to the configuration 

port of the router. The configuration port address is always present when 

configuring the SpaceWire Router. 

1 

Destination 

Logical 

Address  

The destination logical address is not used in the SpaceWire Router. The 

SpaceWire router accepts packets which have the default destination logical 

address of 254h (FEh). 

1 

Protocol 

Identifier  

The RMAP protocol identifier is 01h. 

1