PSL / AFU Interface Specification


Date Added: March 15, 2016

Revision: 1.0.1

PSL / AFU Interface Specification


Level One

  • Technical Resource

Level Two

  • Specifications
  • Technical Working Group

Level Three

  • CAPI
  • Accelerator



A CAPI based accelerator interfaces to the POWER system through a logic unit called the Power Service Layer (PSL).  The Accelerator Function Unit (AFU) contains the logic that implements the unique acceleration function.  This OpenPOWER Accelerator Workgroup Specification defines the logical interface between the PSL and the AFU.

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