Accelerator Functional Unit Developer’s Guide for Intel® FPGA Programmable Acceleration Card

ID 683129
Date 7/20/2020
Public
Document Table of Contents

5.3.2.1.4. Request Device Interface Pipelining

The AFU can request the PIM to insert pipeline stages between the target hardware platform’s PR region boundary and its top-level module device interfaces on the following device classes:
  • cci-p
  • local-memory
Use the following key:value pair on the class key you want pipeline stages inserted:
afu-image:afu-top-interface:module-ports:params:add-extra-timing-reg-stages:<integer-num>

For example, specify adding two pipeline stages on the local-memory device interfaces as follows:

{
	'class': 'local-memory',
	'params':
		{
			'add-extra-timing-reg-stages': 2
		}
}