GRPPSTIMER is a PPS timer IP core providing basic timekeeping functions such as an Elapsed Time counter, according to the CCSDS Unsegmented code specification. It also comprises a frequency synthesizer and can be synchronized using a Pulse Per Second (PPS) input signal.

Overview

The GRPPSTIMER provides datation services that sample the ET counter value on external events. It also provides generation of periodic pulses with cycle periods both greater and less than 1 second. All services in the GRPPSTIMER core are accessible via an AMBA APB slave interface.

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Architecture

This core can operate in two modes: autonomous and synchronous. In autonomous mode, the PPS input signal is not utilized, so no time corrections are applied. Functionalities like datation and pulse generation can still be used. In synchronized mode, a PPS input signal is used, and time corrections
are made based on this signal. The GRPPSTIMER can act as a master and/or a slave in a time distribution system.

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Key Tech Spec

Target technology support

Evaluation boards

Ordering information

Development Kit

Licensing

The IP core is available as a separate package or as an addition to commercial versions of the GRLIB VHDL library. Contact sales@gaisler.com for licensing information

Software

Tools

Block diagram

Supported Hardware

Configuration

Reference Design

Other resources

Detailed features

Downloads

See the GRPPSTIMER complete documentation in the download files below.

File

Category

Revision

Date

Access

GRLIB IP Cores Manual

Data sheet and user's manual

2024.4

2024-12-23

Free download

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PPS Timer