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1.2.1. Understanding the Different PTP Clocks
1.2.2. Precision Time Protocol (PTP) Synchronization Process
1.2.3. Functional Flow For A 1588 Ordinary Clock Master/Slave Mode System
1.2.4. Functional Flow For A 1588 Transparent Clock Master/Slave Mode System
1.2.5. Functional Flow for A 1588 Boundary Clock Mode System
1.2.6. Timestamp Packet Functional Flow in Linux Driver
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1.4.3. System Parameters
This section describes the parameters used for the modules used in the reference design that are instantiated from the Quartus II software IP catalog.
The following table shows the parameter settings in the Altera 10G-bps Ethernet MAC IP for this reference design. Altera recommends keeping the specified parameter settings as set in the project when using the reference design.
Parameter | Setting |
---|---|
Speed | 10 Gbps |
Datapath option: | TX & RX |
Enable preamble pass-through mode | Turn off |
Enable priority-based flow control (PFC) | Turn off |
Enable supplementary address | Turn off |
Enable CRC on transmit path | Turn on |
Enable statistics collection | Turn on |
Statistics counters: | Memory-based |
Enable time stamping | Turn on |
Enable PTP one-step clock support | Turn on |
The following table shows the parameter settings in the Altera 10GBASE-R PHY IP for this reference design. Altera recommends keeping the specified parameter settings as set in the project when using the reference design.
Parameter | Setting |
---|---|
Number of channels: | 1 |
Mode of operation: | duplex |
PLL type: | CMU |
Reference clock frequency: | 644.53125 MHz |
Enable additional control and status pins | Turn off |
Enable rx_recovered_clk_pin | Turn off |
Enable pll_locked_status port | Turn off |
Enable rx_coreclkin_port | Turn off |
Enable embedded reset controller | Turn on |
Enable IEEE 1588 latency adjustment ports | Turn on |
The following table shows the parameter settings in the Altera Transceiver Reconfiguration Controller IP for this reference design. Altera recommends keeping the specified parameter settings as set in the project when using the reference design.
Parameter | Setting |
---|---|
Number of reconfiguration interfaces: | 2 |
Optional interface grouping: | Leave blank |
Enable offset cancellation | Turn on by default |
Enable duty cycle calibration | Turn off |
Create optional calibration status ports | Turn off |
Enable Analog controls | Turn on |
Enable channel/PLL reconfiguration | Turn off |
Enable PLL reconfiguration support block | Turn off |
The following table shows the parameter settings in the Altera Ethernet IEEE 1588 Time of Day Clock IP for this reference design. Altera recommend keeping the specified parameter settings as set in the project when using the reference design.
Parameter | Setting |
---|---|
DEFAULT_NSEC_PERIOD: | 6 |
DEFAULT_FNSEC_PERIOD: | 0x00006666 |
DEFAULT_NSEC_ADJPERIOD: | 6 |
DEFAULT_FNSEC_ADJPERIOD: | 0x00006666 |