In co-operation with Freescale, IXXAT offers an adapted version of its IEEE 1588-2008 protocol software for the MPC8313E-RDB REV-C Evaluation board. The software is available for download as binary code and enables, together with the IEEE 1588 PTP Manager (demo version), a quick and easy introduction to the IEEE 1588 technology.

The MPC8313 is a Freescale communication processor that implements IEEE1588 hardware timestamp support in the Ethernet MAC layer. Both time stamping and implementation of an adjustable real-time clock in hardware enables a synchronization accuracy in the nanosecond range.

Further information about Freescale products with IEEE 1588 support can be found here .

One MPC8313E-RDB evaluation board synchronized back-to-back using synchronization interval of 0,125 sec to a MPC8360E-MDS reference board reaches an accuracy of +/- 50 nsec offset peaks. The standard deviation of the offset between the nodes is 10 nsec.

The startup and the synchronization are done very fast. Normally up to 10 synchronization intervals are required to become synchronized.

Fig. 1: Start of the synchronization process
 

The following diagram shows the offset from the master values after the synchronization initiation of a long term test.



Fig. 2: Offset from master values in synchronized status


The following diagram shows the offset from master value distribution of the long-term test:


Fig. 3: Distribution of the offset from master values


The IXXAT IEEE1588 stack offers a large number of configuration possibilities and completely implements the IEEE1588-2008 standard. Supported are the transportation protocols IPv4 (annex D), IPv6 (annex E) and IEEE 802.3 (annex F). The software also allows the operation as binary clock or transparent clock with several Ethernet interfaces.
The stack has a management API, via which a management device can be implemented.

The latest version of the IEEE 1588 binary code for the Freescale MPC8313 Evaluation board can be found in the following. Access data is required for the download, which you can request here: Access data