Many library elements perform arithmetic and offer a scaling feature exposed as TP_SHIFT. During this operation, rounding and saturation can occur, configured according to parameters TP_RND and TP_SAT. The modes and values for TP_RND are different on AIE1 compared to AIE-ML as captured in the following table.
| Name | Type | Default | Description | |
|---|---|---|---|---|
| SHIFT | unsigned | 8 | Acc results shift down value. | |
| ROUND_MODE | unsigned | 0 | Rounding mode. | |
| AIE | AIE-ML | |||
0 - rnd_floor* 1 - rnd_ceil* 2 - rnd_pos_inf 3 - rnd_neg_inf 4 - rnd_sym_inf 5 - rnd_sym_zero 6 - rnd_conv_even 7 - rnd_conv_odd |
0 - rnd_floor* 1 - rnd_ceil* 2 - rnd_sym_floor* 3 - rnd_sym_ceil* 8 - rnd_neg_inf 9 - rnd_pos_inf 10 - rnd_sym_zero 11 - rnd_sym_inf 12 - rnd_conv_even 13 - rnd_conv_odd |
|||
| SAT_MODE | unsigned | 1 | Saturation mode. 0 - none 1 - saturate 3 - symmetric saturate |
|
| NITER | unsigned | 8 | Number of iterations to execute. | |
| DIFF_TOLERANCE | unsigned | 0 | Tolerance value when comparing output sample with reference model, e.g. 0.0025 for floats and cfloats. | |
| STIM_TYPE | unsigned | 0 | Supported types: 0: random 3: impulse 4: all ones 5: incrementing pattern 6: sym incrementing pattern 8: sine wave |
|
| DATA_SEED | unsigned | 1 | Seed used to generate random numbers for the inputs. | |
| NUM_OUTPUTS | unsigned | 1 | Number of output ports. | |
| AIE_VARIANT | unsigned | 1 | AIE variant to use for metadata validation. Ignored for compilation and simulation purposes. 1: AIE 2: AIE-ML |
|