Description
The IEEE 1588-2008 Precision Time Protocol (PTP) is a
packet-based synchronization mechanism used in
packet-switched networks. PTP synchronizes the clocks of
different devices with the most accurate clock on the network –
usually a precise, grandmaster clock such as one using a Primary
Reference Time Clock (PRTC) time signal.
The 82P33913-x is a software and hardware system that can
operate as a PTP slave or PTP master. As a PTP slave, the
82P33913-x recovers accurate and stable electrical
synchronization signals from a packet-based reference generated
by a PTP master. As a PTP master, the 82P33913-x can lock to a
stable electrical clock source and generate packet based PTP
references for downstream PTP slaves.
The 82P33913-x is available with the two software options listed
in Table 1.
Table 1. Software Options by Part Number
Part Number Included Software
82P33913 Renesas Clock Recovery Servo Software
82P33913-1 Renesas Clock Recovery Servo Software
IEEE 1588 Protocol Stack

Features
▪ System implements ITU-T telecom profiles
▪ Composed of Renesas’ IEEE 1588 software and Renesas’
Synchronization Management Unit (SMU) hardware
▪ Operates as IEEE 1588 / PTP slave
▪ Recovers accurate and stable synchronization signals from
packet based IEEE 1588 / PTP master
▪ Provides integrated physical layer frequency support
▪ Operates as an IEEE 1588 / PTP master
Software
▪ C99 source code distribution, supporting POSIX-based
Operating Systems (OSs) such as Linux
▪ IEEE 1588 compliant Precision Time Protocol (PTP) stack
▪ Abstraction interface supports user-supplied IEEE 1588
compliant Precision Time Protocol (PTP) stack
▪ Reference trackers filter packet synchronization noise from
IEEE 1588 unaware networks
Hardware
▪ Synchronization Management Unit (SMU) provides tools to
manage physical layer and packet based synchronous clocks
for IEEE 1588 Telecom Profile applications
▪ Supports independent IEEE 1588 and Synchronous Ethernet
(SyncE) timing paths
▪ Combo mode provides SyncE physical layer frequency support
for IEEE 1588 Telecom Boundary Clocks (T-BC) and Telecom
Time Slave Clocks (T-TSC) per G.8273.2
▪ Digital PLLs can be configured as Digitally Controlled
Oscillators (DCOs) for IEEE 1588 clock synthesis
▪ Generates G.8262 and G.8262.1 compliant SyncE clocks
▪ Fractional-N input dividers support a wide range of reference
frequencies
▪ Locks to 1 pulse per second (PPS) references from GPS based
sources
▪ Loads configuration from an external EPROM after reset