The AI Engine array has a single
clock domain for all the tiles and array interface blocks. The performance target of
the AI Engine array for the –1L speed
grade devices is 1 GHz with VCCINT at 0.70V. In addition,
the AI Engine array has clocks for
interfacing to other blocks. The following table summarizes the various clocks in
the AI Engine array and their performance
targets.
Clock | Target for -1L | Source | Relation to AI Engine Clock |
---|---|---|---|
AI Engine array clock | 1 GHz | AI Engine PLL | N/A |
NoC clock | 960 MHz | NoC clocking | Asynchronous, CDC within NoC |
PL clocks | 500 MHz | PL clocking | Asynchronous, CDC within AI Engine array interface |
NPI clock | 300 MHz | NPI clocking | Asynchronous |