4.3. Clock Network Revision History
Document
Version
Changes
2019.02.04
Made the following changes:
• Added instructions for connecting
tx_clkout
,
tx_coreclkin
,
rx_clkout
, and
rx_coreclkin
.
• Clarified Master-Slave Configuration: Option 2.
• Add recommendations for the QSF Assignments for Reference Clock Pins.
• Changed the maximum reference clock frequency from 500 to 700 and added related instructions to
Reference Clock Pins, and clarified that, although the Intel Stratix 10 E-Tile transceiver reference
clock input pin supports a frequency range of 125 MHz to 700 MHz, the reference clock network
supports a maximum frequency of 500 MHz.
• For 25 Gbps PMA Direct Channel (with FEC) within a Single FEC Block, clarified that TX and RX
Double Width is enabled.
2018.10.08
Made the following changes:
• Updated the "Clock Sharing 25G Et 24G CPRI" figure.
• Updated the "Clock Sharing 25G Et 24G CPRI + PMA Direct" figure.
• Added Use Cases and all subsections.
• Removed the "Clocking Sharing Across Multiple IPs" section.
• Added the "E-Tile Channel Placement for a Single 25-Gbps PMA Direct Channel (with FEC) Within a
Single FEC Block" figure.
• Changed the QSF assignment for all parameters in the "QSF Assignments for a Single Reference
Clock Pin (refclk[0])" table.
2018.07.18
Made the following changes:
• Added QSF Assignments for Reference Clock Pins.
• Added Clocking Sharing Across Multiple IPs.
2018.05.15
Made the following changes:
• Updated figure "REFCLK LVPECL Pins" so that refclk_in_B only connects to REFCLK_1.
• Changed REFCLK to "reference clock" except for references to REFCLK[0-8] and
refclk
pins.
2018.01.31
Initial release.
4. Clock Network
UG-20056 | 2019.02.04
Intel
®
Stratix
®
10 E-Tile Transceiver PHY User Guide
97