3.1.2. PMA/FEC Direct PHY Multirate Hardware Design Example
Figure 11. PMA/FEC Direct PHY Multirate Hardware Design Example Block Diagram: 50G-1 Base Variant
Figure 12. PMA/FEC Direct PHY Multirate Hardware Design Example Block Diagram: 400G-8 Base Variant
In the hardware design example, the ISSP modules control the DUT IP reset signals, dr_mode selection and shows the status signals. The hardware test scripts open service to the ISSP to read and drive the values. A JTAG host is instantiated to access the Avalon® memory-mapped interface.
The hardware design example executes the dynamic reconfiguration transition process based on user selection as stated in src/parameter.tcl file and checks the DUT IP status. There is a default dynamic reconfiguration transition sequence, but user can always modify the DR_TRANSITION array variable in src/parameter.tcl file.
DR_TRANSITION: Intended DR sequence array, size of this array variable determines the number of dynamic reconfiguration to be performed.
- For example, if you want to achieve the following dynamic reconfiguration sequence for 50G-1 Base Variant: 1x50G > 1x25G > 1x50G KPFEC > 1x24.33024G > 1x50G, the variables changes are:
set DR_TRANSITION(0) "1x25G" set DR_TRANSITION(1) "1x50G KPFEC" set DR_TRANSITION(2) "1x24.33024G" set DR_TRANSITION(3) "1x50G
- If you want to achieve the following dynamic reconfiguration sequence for 400G-8 Base Variant: 1x400G-8 > 2x100G-4 > 2x200G-4 > 1x400G-8G, the variables changes are:
The variables changes are: set DR_TRANSITION(0) "2x100G_4" set DR_TRANSITION(1) "2x200G_4" set DR_TRANSITION(2) "1x400G_8"
Hardware Flow for Design Example:
The hardware test design <design_example_dir>/hardware_test_design/ directory contains a hwtest subdirectory that contains .tcl script for dynamic reconfiguration hardware testing. Follow the steps shown below to test the design example in hardware.
Figure 13. Hardware Flow for PMA/FEC Direct PHY Multirate Hardware Design Example
The PMA/FEC Direct Multirate PHY Design Example runs the external loopback test by default with the loopback_mode parameter set to 0. Before performing any hardware test, attach the QSFP-DD loopback module according to the QSF pinout assignments of the respective design example.
To perform an internal loopback test in hardware, modify the loopback_mode parameter to 1 in the parameter.tcl file located in <design_example_dir>/hardware_test_design/hwtest/src. After you compile the F-Tile dynamic reconfiguration design example and configure it on your Intel Agilex® 7 device, you can use the System Console to program the IP core and its PHY IP core registers.
About this task:
To start the System Console and test the hardware design example, follow these steps:
- After the hardware design example is configured on the Intel Agilex® 7 device, in the Intel Quartus Prime Pro Edition software, click .
- In the Tcl Console pane, type cd hwtest to change directory to <design_example_dir>/hardware_test_design/hwtest.
- Type source main_script.tcl to open a connection to the JTAG master and start the test.
- Analyze the results. Successful run displays Test Passed in the System Console.
Note: If internal serial loopback (ILB) is enabled for the current profile, you need to disable it using the FGT attribute access method before performing dynamic reconfiguration to the next target profile. If you do not follow this, you might observe that the Quartus Hard IP performs abnormally after dynamic reconfiguration.
The sample output for the PMA/FEC Direct PHY Multirate hardware design examples is shown below.
Sample output for PMA/FEC Direct PHY Multirate hardware design example of 50G-1 Base Variant:
% cd hwtest $source main_script.tcl Info: Number of Channels = 1 Info: JTAG Port ID = 2 Info: Power Up Variant = 1x50G INFO: Start of ftile_dphy_dr_test_dynamic INFO: Basic DPHY DR test INFO: Set Reconfig Reset INFO: write_value is 0x1 INFO: Release Reconfig Reset INFO: write_value is 0x0 INFO: Set DR mode... INFO: DR mode is 0x0 ........... ******* ******* INFO: Channel 0: Set TX Reset INFO: write_value is 0x4 INFO: Channel 0: Set RX Reset INFO: write_value is 0x6 INFO: get_reset_ack_status ----- INFO: Channel 0 : Checking tx reset ack status... INFO: tx_reset_ack_status_0 = 0x3 INFO: TX fully in reset state INFO: Channel 0 : Checking rx reset ack status... INFO: rx_reset_ack_status_0 = 0x3 INFO: RX fully in reset state INFO: Start DR selection----- INFO: DR transition is 1x50G ----- INFO: Channel: 0 Configuring ED to PMA_DIR 1x50G .... INFO: Wait for DR Ready.... INFO: configuring DR Profile 1x50G.... INFO: Trigger DR interrupt INFO: Wait for DR interrupt Ack.... INFO: DR Request acknowledged INFO: Wait for DR Config to be done.... INFO: DONE Reconfigure to 1x50G. INFO: Set DR mode... INFO: DR mode is 0x0 INFO: Channel 0: Release TX Reset INFO: write_value is 0x2 INFO: Channel 0: Release RX Reset INFO: write_value is 0x0 INFO: Channel 0 : Run test... INFO: Read out probe data: 0x7dc INFO: Data locked with no error ******* ******* Info: End of ftile_dphy_dr_test Info: Test <ftile_dphy_dr_test> Passed
Sample output for PMA/FEC Direct PHY Multirate hardware design example of 400G-8 Base Variant:
% cd hwtest $source main_script.tcl Info: Number of Channels = 1 Info: JTAG Port ID = 2 Info: Power Up Variant = 1x400G_8 INFO: Start of ftile_dphy_dr_test INFO: Basic DPHY DR test INFO: Set Reconfig Reset INFO: write_value is 0x1 INFO: Release Reconfig Reset INFO: write_value is 0x0 INFO: Set DR mode... INFO: DR mode is 0x0 INFO: Channel 0: Set TX Reset INFO: write_value is 0x4 INFO: Channel 0: Set RX Reset INFO: write_value is 0x6 INFO: check_reset_ack_n_status for current_dr_profile : 400G ----- INFO: Channel 0 : Checking tx reset ack status... INFO: tx_reset_ack_status_0 = 0x5 INFO: TX fully in reset state INFO: Channel 0 : Checking rx reset ack status... INFO: rx_reset_ack_status_0 = 0x5 INFO: RX fully in reset state INFO: Internal Serial Loopback not enabled INFO: Channel 0: Release TX Reset INFO: write_value is 0x2 INFO: Channel 0: Release RX Reset INFO: write_value is 0x0 Run default test. Release resets. Running test for 10s INFO: Channel 0 : Run test... INFO: Read out probe data: 0x6b70 INFO: Channel 0: Set TX Reset INFO: write_value is 0x4 INFO: Channel 0: Set RX Reset INFO: write_value is 0x6 INFO: check_reset_ack_n_status for current_dr_profile : 400G ----- INFO: Channel 0 : Checking tx reset ack 0 status... INFO: tx_reset_ack_status_0 = 0x5 INFO: TX fully in reset state INFO: Channel 0 : Checking rx reset ack status... INFO: rx_reset_ack_status_0 = 0x5 INFO: RX fully in reset state INFO: Start DR selection----- INFO: DR transition is 2x200G_4 ----- INFO: Channel: 0 Configuring ED to PMA_DIR 2x200G_4 .... INFO: Wait for DR Ready.... INFO: configuring DR Profile 2x200G_4.... INFO: Trigger DR interrupt INFO: Wait for DR interrupt Ack.... INFO: DR Request acknowledged INFO: Wait for DR Config to be done.... INFO: DONE Reconfigure to 2x200G_4. INFO: Set DR mode... INFO: DR mode is 0x1 INFO: Channel 0: Release TX Reset INFO: write_value is 0x2 INFO: Channel 0: Release RX Reset INFO: write_value is 0x0 INFO: Channel 0 : Run test... INFO: Read out probe data: 0x7f70 INFO: Data locked with no error INFO: Test Pass! ******* ******* INFO: Channel 0: Set TX Reset INFO: write_value is 0x4 INFO: Channel 0: Set RX Reset INFO: write_value is 0x6 INFO: check_reset_ack_n_status for current_dr_profile : 200G ----- INFO: Channel 0 : Checking tx reset ack 0 status... INFO: tx_reset_ack_status_0 = 0xf INFO: TX fully in reset state INFO: Channel 0 : Checking tx reset ack 1 status... INFO: tx_reset_ack_status_1 = 0xf INFO: TX fully in reset state INFO: Channel 0 : Checking rx reset ack status... INFO: rx_reset_ack_status_0 = 0xf INFO: RX fully in reset state INFO: Channel 0 : Checking rx reset ack status... INFO: rx_reset_ack_status_1 = 0xf INFO: RX fully in reset state INFO: Start DR selection----- INFO: DR transition is 2x100G_4 ----- INFO: Channel: 0 Configuring ED to PMA_DIR 2x100G_4 .... INFO: Wait for DR Ready.... INFO: configuring DR Profile 2x100G_4.... INFO: Trigger DR interrupt INFO: Wait for DR interrupt Ack.... INFO: DR Request acknowledged INFO: Wait for DR Config to be done.... INFO: DONE Reconfigure to 2x100G_4. INFO: Set DR mode... INFO: DR mode is 0x2 INFO: Channel 0: Release TX Reset INFO: write_value is 0x2 INFO: Channel 0: Release RX Reset INFO: write_value is 0x0 INFO: Channel 0 : Run test... INFO: Read out probe data: 0x7f70 INFO: Data locked with no error INFO: Test Pass! ******* ******* INFO: Channel 0: Set TX Reset INFO: write_value is 0x4 INFO: Channel 0: Set RX Reset INFO: write_value is 0x6 INFO: check_reset_ack_n_status for current_dr_profile : 100G ----- INFO: Channel 0 : Checking tx reset ack 0 status... INFO: tx_reset_ack_status_0 = 0xf INFO: TX fully in reset state INFO: Channel 0 : Checking tx reset ack 1 status... INFO: tx_reset_ack_status_1 = 0xf INFO: TX fully in reset state INFO: Channel 0 : Checking rx reset ack status... INFO: rx_reset_ack_status_0 = 0xf INFO: RX fully in reset state INFO: Channel 0 : Checking rx reset ack status... INFO: rx_reset_ack_status_1 = 0xf INFO: RX fully in reset state INFO: Start DR selection----- INFO: DR transition is 1x400G_8 ----- INFO: Channel: 0 Configuring ED to PMA_DIR 1x400G_8 .... INFO: Wait for DR Ready.... INFO: configuring DR Profile 1x400G_8.... INFO: Trigger DR interrupt INFO: Wait for DR interrupt Ack.... INFO: DR Request acknowledged INFO: Wait for DR Config to be done.... INFO: DONE Reconfigure to 1x400G_8. INFO: Set DR mode... INFO: DR mode is 0x0 INFO: Channel 0: Release TX Reset INFO: write_value is 0x2 INFO: Channel 0: Release RX Reset INFO: write_value is 0x0 INFO: Channel 0 : Run test... INFO: Read out probe data: 0x6b70 INFO: Data locked with no error INFO: Test Pass! ******* ******* Info: End of ftile_dphy_dr_test Info: Test <ftile_dphy_dr_test> Passed