Communication Profile

Remote Memory Access Protocol

Domain(s)
Space
System(s)
Satellite
Profile(s)
COMM

RMAP is used to access memory devices across a SpaceWire data link. RMAP can be used to support many functions within a JAS-based system, such as:

  • Configure SpaceWire routers
  • Load and control FPGA applications
  • Configure and control sensors
  • Gather state of health information
  • Initializing and retrieving the contents of memory

RMAP supports three primary operations: read, write and an atomic read-modify-write. RMAP also has the ability to perform a verify function as part of the write operations. However, RMAP is not considered a reliable protocol because it does not retransmit the commands if there is an error.

Commercially available FPGA cores and software libraries can be purchased to support RMAP.