F-Tile Architecture and PMA and FEC Direct PHY IP User Guide

ID 683872
Date 11/04/2024
Public
Document Table of Contents

4.2. IP Port List

The following table lists the ports for the IP; all ports are 1-bit wide.

Table 100.   F-Tile Reference and System PLL Clocks Intel® FPGA IP Port ListRefer to Port Connection Guidelines between F-Tile Reference and System PLL Clocks Intel® FPGA IP and F-Tile PMA/FEC Direct PHY Intel® FPGA IP for recommended connections.
Port Name Direction Description
FHT
in_refclk_fht_i Input FHT reference clock input port. Must be mapped to device reference clock pin. Maximum of 2 (i = 0 to 1) ports of this type.
out_fht_cmmpll_clk_i Output FHT common PLL output port. Must be connected to protocol IPs, connected to FHT building-block. There can be a maximum of 2(i = 0 to 1) ports of this type.
FGT and System PLL
in_refclk_fgt_i Input FGT and system PLL reference clock input port. Must be mapped to device reference clock pin. This reference clock port can be connected to FGT PMA, system PLL or both. There can be a maximum of 10 (i = 0 to 9) ports of this type.
avmm_clk Input
Avalon® memory-mapped interface clock. This port is only available when at least one of Refclk #i is active at and after device configuration is set as Off. Altera recommends 100 to 250 MHz for this clock.
Note: Starting with Quartus® Prime Pro Edition software version 24.2, this port no longer functions and serves as a dummy port for backward compatibility.
avmm_reset Input
Avalon® memory-mapped interface reset. This port is only available when at least one of Refclk #i is active at and after device configuration is set as Off.
Note: Starting with Quartus® Prime Pro Edition software version 24.2, this port no longer functions and serves as a dummy port for backward compatibility.
FGT
out_refclk_fgt_i Output FGT Refclk output port. Must be connected to protocol IPs, connected to FGT building-block. There can be a maximum of 10 (i = 0 to 9) ports of this type.
en_refclk_fgt_i Input
FGT reference clock status control signal. This port is only available when the corresponding Refclk #i is active at and after device configuration set as Off. There can be a maximum of 10 (i = 0 to 9) ports of this type.
  • 1'b0 -> 1'b1: Low to high transition enables Refclk #i
  • 1'b1 -> 1'b0: High to low transition disables Refclk #i
Note: When you use the Refclk #i only for the system PLL and do not share it with the FGT PMA, you must still drive this port according to the above requirements to get the system PLL to function correctly.
disable_refclk_monitor_i Input
FGT reference clock monitor control signal. This port is only available when the corresponding Refclk #i is used by the FGT PMA or the system PLL. There can be a maximum of 10 (i = 0 to 9) ports of this type.
  • 1'b0: Enable Refclk #i monitor and protection circuit.
  • 1'b1: Disable Refclk #i monitor and protection circuit.
Altera recommends that you always enable the monitor and protection circuit by either driving this port to 1'b0 or leaving it unconnected. This port is exposed for debugging purposes. You should only disable the monitor and protection circuit when the system PLL behaves abnormally.
When the Refclk #i becomes inactive, to prevent FGT PMA lane performance from degradation the following conditions occur:
  • If the monitor is enabled, a protection circuit acts automatically.
  • If the monitor is disabled, you have to control the en_refclk_fgt_i to perform high to low (1'b1 -> 1'b0) transition.
refclk_fgt_enabled_i Output

FGT reference clock status signal. This port is only available when the corresponding Refclk #i is active at and after device configuration is set to Off. There can be a maximum of 10 (i = 0 to 9) ports of this type. After you assert the en_refclk_fgt_i signal, this port indicates the presence of a reference clock on the device pins.

  • 1'b0: Indicates Refclk #i is not present at the device pins
  • 1'b1: Indicates Refclk #i is present at the device pins
This signal has valid outputs only when Refclk #i monitor is enabled.
Note: When you use the Refclk #i only for the system PLL and do not share it with the FGT PMA, you must still monitor this port to make sure that the system PLL functions correctly.
in_cdrclk_i Input Input port for FGT reference clock configured as CDR output. This must be connected to protocol IP output CDR port. There can be a maximum of 2 (i = 0 to 1) ports of this type.
out_cdrclk_i Output Output port for FGT reference clock configured as CDR output. This must be connected to one of two FGT reference clock pins that can be configured as CDR outputs. You must specify the location assignment in the Quartus® Prime Pro Edition software qsf settings file for correct functionality. There can be a maximum of 2 (i = 0 to 1) ports of this type.
out_coreclk_i Output
FGT reference clock output port for user logic. This port is only available when the corresponding Export Refclk #i for use in user logic is set to On.
Note: This signal cannot directly feed the reference clock of the IOPLL Intel FPGA IP.
System PLL
out_systempll_clk_i Output Output port of system PLL. This must be connected to system PLL clock input of protocol IP. There can be a maximum of 3 (i = 0 to 2) ports of this type.
out_systempll_synthlock_i Output System PLL lock status port which indicates if system PLL is locked to incoming reference clock. There can be a maximum of 3 (i = 0 to 2) ports of this type. You can use this port as a status or debug signal.
refclock_ready [2:0] Input
System PLL reference clock status control signal. This port is only available when all the enabled system PLL's corresponding Refclk #i is active at and after device configuration are set as Off.
  • bit[0] is used to control system PLL #0 reference clock.
  • bit[1] is used to control system PLL #1 reference clock.
  • bit[2] is used to control system PLL #2 reference clock.

When system PLL #i is disabled, bit[i] can be any value and does not matter. When system PLL #i is enabled, after the reference clock is available, you must assert bit[i] to notify the system PLL to start locking to the incoming reference clock.

refclock_status Output
System PLL reference clock status signal. This port is only available when all the enabled system PLL's corresponding Refclk #i is active at and after device configuration are set to Off. After you assert the refclock_ready signal, this port indicates the presence of a reference clock on the device pins.
  • 1'b0: The reference clock is not present at the device pins.
  • 1'b1: The reference clock is present at the device pins.
You can also use the out_systempll_synthlock_i signal to check the system PLL lock status.