GTS AXI Streaming Intel® FPGA IP for PCI Express* User Guide

ID 813754
Date 11/04/2024
Public
Document Table of Contents

4.10. Power Management

The GTS AXI Steamig has a powe maagemet egiste that allows you to maage Powe Maagemet messages. These egistes ae implemeted i the soft cotol egiste space.
Note: Refe to Cotol Registes sectio fo the details about the POWER MANAGEMENT CTRL egiste.
The GTS AXI Steamig IP suppots the two madatoy powe states: D0 (full powe) ad D3 (pepaatio fo a loss of powe). It does ot suppot the optioal D1 ad D2 low-powe states.
Table 21.  Device ad Lik Powe States Relatioship
Device Powe State Lik Powe State
D0 L0
D1 (ot suppoted) L1
D2 (ot suppoted) L1
D3 L1, L2/L3 Ready
The GTS AXI Steamig IP povides the D-States Status egiste (D-States STS) to allow the applicatio to ead the D-State value of each fuctio fom the Had IP cotolle.
Note: Refe to Cotol Registes sectio fo the details about the D-States STS egiste.

The GTS AXI Steamig IP suppots Active State Powe Maagemet (ASPM) which is a hadwae-based lik powe cosevatio mechaism while the device is i the D0 device powe state. You ca eable ad disable ASPM via the Active State PM Cotol field of the Lik Cotol egiste as defied i the PCIe* Base Specificatio. The HIP hadles the tasitio ito ad out of ASPM states. ASPM defied two low powe states, L0s (stadby state) ad L1 ASPM.L0s state, povide cosideable powe savig but still allow quick ety ad exit. L1 state povides geate powe cosevatio tha L0s fo applicatios whee loge ety ad exit latecies ae acceptable.