Hard Processor System Technical Reference Manual: Agilex™ 5 SoCs

ID 814346
Date 11/27/2024
Public
Document Table of Contents

5.1.5.5. Timestamp Interface Signals

XGMAC core is configured to support two 1 pulse per second (1 PPS) output signals and two auxiliary timestamp trigger input signals.

Table 122.  Timestamp Interface Signals

Signal Name

Direction

Default State

Clock

Description

ptp_pps_o[1:0]

Out

High

clk_ptp_ref_i

Pulse per second output. This pulse signal is high every time the seconds counter is incremented.

ptp_aux_ts_trig_i[1:0]

In

High

Async

Auxiliary timestamp trigger. A rising edge of this port is used to trigger the auxiliary snapshot.

Note:
  • ptp_pps_o[0] output signal is connected to the HPS’s 1PPS output pin via the HPS IO pin mux.
  • ptp_pps_o[1] output signal is exposed to the FPGA fabric.
  • ptp_aux_ts_trig_i[0] input signal is connected to the SMTG hub TS capture signal.
  • ptp_aux_ts_trig_i[1] input signal is connected to the HPS’s 1PPS input pin via HPS IO pin mux.