Intel Agilex User Manual page 66

Figure 48. Input Cascade in Fixed-Point Arithmetic 27 x 27 Mode
4.1.4.1. Dynamic Scanin
When input cascade is used, the source of top multiplier can be dynamically switched
between
Figure 49. Dynamic Scanin
DISABLE_SCANIN
AY[18..0]
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Intel Agilex Variable Precision DSP Blocks User Guide
66
4. Intel Agilex Variable Precision DSP Blocks Design Considerations
scanin[26..0]
ay[26..0]
az[25..0]
ax[26..0]
and by asserting/de-asserting
SCANIN AY
SCANIN[18..0]
Input
register
UG-20213 | 2019.04.02
CLK
ENA[2..0]
CLR[0]
scanout[26..0]
input.
DISABLE_SCANIN
0
Input
register
1
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Multiplier