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Updated stats, added Kintex/Virtex UltraScale timings

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Clifford Wolf 2016-04-12 18:13:08 +02:00
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@ -609,24 +609,29 @@ The following evaluations have been performed with Vivado 2015.4.
#### Timing on Xilinx 7-Series FPGAs
The `picorv32_axi` module with enabled `TWO_CYCLE_ALU` has been placed and
routed for Xilinx Artix-7T (xc7a15t-fgg484), Xilinx Kintex-7T (xc7k70t-fbg676),
and Xilinx Virtex-7T (xc7v585t-ffg1761) devices in all speed grades. A binary
search is used to find the lowest clock period for which the design meets
timing.
routed for Xilinx Artix-7T, Kintex-7T, Virtex-7T, Kintex UltraScale, and Virtex
UltraScale devices in all speed grades. A binary search is used to find the
lowest clock period for which the design meets timing.
See `make table.txt` in [scripts/vivado/](scripts/vivado/).
| Device | Speedgrade | Clock Period (Freq.) |
|:-------------------- |:----------:| --------------------:|
| Xilinx Artix-7T | -1 | 4.2 ns (238 MHz) |
| Xilinx Artix-7T | -2 | 3.5 ns (285 MHz) |
| Xilinx Artix-7T | -3 | 3.2 ns (312 MHz) |
| Xilinx Kintex-7T | -1 | 2.8 ns (357 MHz) |
| Xilinx Kintex-7T | -2 | 2.3 ns (434 MHz) |
| Xilinx Kintex-7T | -3 | 2.1 ns (476 MHz) |
| Xilinx Virtex-7T | -1 | 2.6 ns (384 MHz) |
| Xilinx Virtex-7T | -2 | 2.3 ns (434 MHz) |
| Xilinx Virtex-7T | -3 | 2.1 ns (476 MHz) |
| Family | Device | Speedgrade | Clock Period (Freq.) |
|:------------------------ |:-------------------- |:----------:| --------------------:|
| Xilinx Artix-7T | xc7a15t-fgg484-1 | -1 | 4.2 ns (238 MHz) |
| Xilinx Artix-7T | xc7a15t-fgg484-2 | -2 | 3.5 ns (285 MHz) |
| Xilinx Artix-7T | xc7a15t-fgg484-3 | -3 | 3.2 ns (312 MHz) |
| Xilinx Kintex-7T | xc7k70t-fbg676-1 | -1 | 2.8 ns (357 MHz) |
| Xilinx Kintex-7T | xc7k70t-fbg676-2 | -2 | 2.3 ns (434 MHz) |
| Xilinx Kintex-7T | xc7k70t-fbg676-3 | -3 | 2.1 ns (476 MHz) |
| Xilinx Virtex-7T | xc7v585t-ffg1761-1 | -1 | 2.6 ns (384 MHz) |
| Xilinx Virtex-7T | xc7v585t-ffg1761-2 | -2 | 2.3 ns (434 MHz) |
| Xilinx Virtex-7T | xc7v585t-ffg1761-3 | -3 | 2.1 ns (476 MHz) |
| Xilinx Kintex UltraScale | xcku035-fbva676-1-c | -1 | 2.6 ns (384 MHz) |
| Xilinx Kintex UltraScale | xcku035-fbva676-2-e | -2 | 2.3 ns (434 MHz) |
| Xilinx Kintex UltraScale | xcku035-fbva676-3-e | -3 | 2.1 ns (476 MHz) |
| Xilinx Virtex UltraScale | xcvu065-ffvc1517-1-i | -1 | 2.5 ns (400 MHz) |
| Xilinx Virtex UltraScale | xcvu065-ffvc1517-2-e | -2 | 2.2 ns (454 MHz) |
| Xilinx Virtex UltraScale | xcvu065-ffvc1517-3-e | -3 | 1.9 ns (526 MHz) |
#### Utilization on Xilinx 7-Series FPGAs
@ -646,7 +651,7 @@ See `make area` in [scripts/vivado/](scripts/vivado/).
| Core Variant | Slice LUTs | LUTs as Memory | Slice Registers |
|:------------------ | ----------:| --------------:| ---------------:|
| PicoRV32 (small) | 754 | 48 | 420 |
| PicoRV32 (regular) | 904 | 48 | 562 |
| PicoRV32 (large) | 1892 | 88 | 1029 |
| PicoRV32 (small) | 769 | 48 | 420 |
| PicoRV32 (regular) | 960 | 48 | 562 |
| PicoRV32 (large) | 2105 | 88 | 1022 |