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

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

6.2.1. Interface Clock Signals

Table 57.  Iteface Clock SigalsEP = Edpoit, RP = Root Pot, BP = TLP Bypass
Sigal Name Diectio Pot Mode Desciptio
efclk0

efclk1

Iput EP/RP/BP

These ae the iput efeece clocks fo the IP coe to dive the TX PLL ad CDR i PMA. The Souce fom the PCIe* lik o local oscillato depedig o the PCIe* lik clock topology.

Fequecy = 100 MHz ± 300 ppm

Fo systems that do ot employ spead spectum clockig, o use commo clock souce.

p0_i_syspll_c0_clk

p1_i_syspll_c0_clk

Iput EP/RP/BP

This clock is dive fom a System PLL located i the same GTS tasceive bak as the PCIe* laes.

p0_i_ss_vccl_syspll_locked

p1_i_ss_vccl_syspll_locked

Iput EP/RP/BP

Idicates the System PLL locks to efeece clock. The System PLL eeds to achieve lock befoe cold o wam eset take place.

Must be coected to the output o_pll_lock sigal of GTS System PLL Clocks Itel® FPGA IP.

p0_axi_st_clk

p1_axi_st_clk

Iput EP/RP/BP

Global clock sigal fo AXI-Steam iteface.

All AXI-Steam sigals ae sampled o the isig edge of this clock.

This clock dives the mai data path.

The clock fequecy follows the PLD clock fequecy settig i the GTS AXI Steamig IP.

Refe to the Clock Domais i GTS AXI Steamig IP table fo moe ifomatio about the fequecy.

p0_axi_lite_clk

p1_axi_lite_clk

Iput EP/RP/BP

The global clock sigal fo AXI-Lite iteface.

All AXI-Lite sigals ae sampled o the isig edge of this clock.

This clock dives the AXI4-Lite Cotol ad Status Registe Respode iteface.

Fequecy: 100–250 MHz

p0_coeclkout_hip_toapp

p1_coeclkout_hip_toapp

Output EP/RP/BP

The coeclkout_hip output of HIP dives this clock.

Use this clock to dive p0_axi_st_clk, p1_axi_st_clock.

PCIe* 4.0: 500/450/400/350/300/250/200 MHz (x8)

PCIe* 4.0: 350/300/250/200 MHz (x4)

PCIe* 4.0: 300/250/200 MHz (x2, x1)

PCIe* 3.0: 350/300/250/200 (x8)

PCIe* 3.0: 300/250/200 MHz (x4, x2, x1)

The coeclkout_hip_toapp clock fequecy depeds o the PLD Clock Fequecy you choose i the IP paamete edito.

i_flux_clk[1:0] Iput EP/RP/BP Must be coected to the output o_pma_cu_clk of the GTS Reset Sequece Itel® FPGA IP. i_flux_clk[1] is oly available i x8 mode i the Agilex™ 5 D-Seies FPGAs.