RapidIO Intel FPGA IP User Guide

ID 683884
Date 9/15/2021
Public
Document Table of Contents

1.5. Device Speed Grades

Following are the recommended device family speed grades for the supported link widths and internal clock frequencies. In all cases, Intel® FPGA recommends that you set Intel® Quartus® Prime Analysis & Synthesis Optimization Technique to Speed.
Table 8.  Recommended Device Family Speed Grades for Newer Devices In this table, the entry -n indicates that both the industrial speed grade In and the commercial speed grade Cn are supported for this device family, RapidIO mode, and baud rate.
Device Family Mode Rate 1.25 Gbaud 2.5 Gbaud 3.125 Gbaud 5.0 Gbaud
fMAX 1x, 2x 31.25 MHz 62.50 MHz 78.125 MHz 125 MHz
4x 62.5 MHz 125 MHz 156.25 MHz 250 MHz
Intel® Arria® 10 1x   -1, -2, -3 -1, -2, -3 -1, -2, -3 -1, -2
2x -1, -2, -3 -1, -2, -3 -1, -2, -3 -1, -2
4x -1, -2, -3 -1, -2, -3 -1, -2, -3 -1, -2
Arria® V (GX, GT, SX, ST) 1x   C4, -5, C6 C4, -5, C6 C4, -5, C6 C46
2x C4, -5, C6 C4, -5, C6 C4, -5, C6 C4, -5
4x C4, -5, C6 C4, -5 C4 6 7
Arria® V GZ 1x   -3, -4 -3, -4 -3, -4 -3
2x -3, -4 -3, -4 -3, -4 -3, -4
4x -3, -4 -3, -4 -3, -4 -3
Stratix® V 1x   C1, -2, -3, -4 C1, -2, -3, -4 C1, -2, -3, -4 C1, -2, -3
2x C1, -2, -3, -4 C1, -2, -3, -4 C1, -2, -3, -4 C1, -2, -3, -4
4x C1, -2, -3, -4 C1, -2, -3, -4 C1, -2, -3, -4 C1, -2, -38
Intel® Cyclone® 10 GX 1x   -5, -6 -5, -6 -5, -6 -5
2x   -5, -6 -5, -6 -5, -6 -5
4x   -5, -6 -5, -6 -5, -6 -5
Cyclone® V (GX, GT9, SX, ST) 1x   C6, -7, C8 C6, -7, C8 C6, -7, C8 C710
2x C6, -7 C6, -7 C6, -7 -711
4x C6, -7, C8 C6, -7 7 7
Table 9.  Recommended Device Family Speed Grades for Legacy Devices In this table, the entry -n indicates that both the industrial speed grade In and the commercial speed grade Cn are supported for this device family, RapidIO mode, and baud rate.
Device Family Mode 1x 4x
Rate 1.25 Gbaud 2.5 Gbaud 3.125 Gbaud 5.0 Gbaud 1.25 Gbaud 2.5 Gbaud 3.125 Gbaud 5.0 Gbaud
fMAX 31.25 MHz 62.50 MHz 78.125 MHz 125 MHz 62.5 MHz 125 MHz 156.25 MHz 250 MHz
Arria II GX   -4, -5, -6 -4, -5, -6 -4, -5, -6 7 -4, -5, -6 -4, -5 -4, -5 7
Arria II GZ   -3, -4 -3, -4 -3, -4 -3 -3, -4 -3, -4 -3, -4 7
Stratix IV   -2, -3, -4 -2, -3, -4 -2, -3, -4 -2, -3, -4 -2, -3, -4 -2, -3, -4 -2, -3, -4 -2, -312
Cyclone IV GX13   -6, -7, -8 -6, -7, -8 -6, -7 7 -6, -7, -8 -614 7 7
6 Some simple Arria® V 1x variations with lane speed of 5.0 Gbaud, and some simple Arria® V 4x variations with lane speeds of 3.125 Gbaud, such as physical-layer-only variations,may meet timing in -5 speed grade devices, after following the Timing Advisor’s recommendations.
7 Not supported for this device family.
8 Intel® recommends that for designs that include a 4x 5.0 Gbaud RapidIO IP core variation and that target a -3 speed grade Stratix® V device, you use multiple seeds in the Intel® Quartus® Prime Design Space Explorer to find the optimal Fitter settings to meet the timing constraints. Following the Timing Advisor's recommendations, including optimizing for speed and using Logic Lock (Standard) regions may be necessary to meet timing, especially for more complex variations implemented in the largest devices.
9 Only the -7 speed grade is available for Cyclone® V GT devices.
10 The RapidIO IP core supports 1x 5.0 Gbaud variations that target the Cyclone® V device family in speed grade C7 Cyclone® V GT devices only. The RapidIO parameter editor does not warn you of this fact. You can generate a 1x 5.0 Gbaud variation that targets a Cyclone® V GX variation, for example, but when you attempt to add the extra constraints required for the RapidIO IP core, the Intel® Quartus® Prime software Analysis and Synthesis tool fails.
11 The RapidIO IP core supports 2x 5.0 Gbaud variations that target the Cyclone® V device family in Cyclone® V GT devices only. The RapidIO parameter editor does not warn you of this fact. You can generate a 2x 5.0 Gbaud variation that targets a Cyclone® V GX variation, for example, but when you attempt to add the extra constraints required for the RapidIO IP core, the Intel® Quartus® Prime software Analysis and Synthesis tool fails.
12 Intel® recommends that for designs that include a 4x 5.0 Gbaud RapidIO IP core variation and that target a -3 speed grade Stratix IV GX device, you use multiple seeds in the Intel® Quartus® Prime Design Space Explorer to find the optimal Fitter settings to meet the timing constraints. Following the Timing Advisor's recommendations, including optimizing for speed and using Logic Lock (Standard) regions may be necessary to meet timing, especially for more complex variations implemented in the largest devices.
13 The RapidIO IP core supports only the EP4CGX50, EP4CGX75, EP4CGX110, and EP4CGX150 Cyclone IV GX devices.
14 Some simple Cyclone IV GX 4x variations, such as physical-layer-only variations, may meet timing at 2.5 Gbaud in -7 speed grade devices, after following the Timing Advisor’s recommendations.