Research Article
Analysis of Fast Radix-10 Digit Recurrence Algorithms for Fixed-Point and Floating-Point Dividers on FPGAs
Table 4
Results for normalized decimal fixed-point dividers,
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| | | Type1 | Type2 | Type3.a | Type3.b | Type4 |
| | Number of LUTs | 3595 | 1704 | 1749 | 2751 | 1846 | | Number of FFs | 1234 | 1126 | 1262 | 1262 | 1031 | | Number of LUTs and FFs combined | 3868 | 2210 | 2304 | 3240 | 2203 | | Number of 36 k BRAM | 0 | 5 | 2 | 2 | 0 |
| | Number of LUTs normalized to the type2 divider | 2.11 | 1.00 | 1.03 | 1.61 | 1.08 | | Number of FFs normalized to the type2 divider | 1.10 | 1.00 | 1.12 | 1.12 | 0.92 | | Number of LUTs and FFs combined normalized to the type2 divider | 1.75 | 1,00 | 1.04 | 1.47 | 1.00 |
| | Cycle time (ns) | 8.1 | 8.5 | 10.1 | 9.1 | 12.1 | | Overall latency (ns) (19 cycle time) | 154 | 162 | 192 | 173 | 230 | | Max. frequency (MHz) | 123 | 118 | 99 | 110 | 83 |
| | Max. frequency normalized to the type2 divider | 1.05 | 1.00 | 0.84 | 0.93 | 0.70 |
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