Clocksource clarification for BT817?

[rmand]

[apologies if this is a misstep. New here]

It looks like the references to the internal clock source option that was available in BT816 has been removed in the datasheet for BT817/8 with seemingly the only option being an external crystal.

The rest of the document however, makes it sounds like other options are still available:

"After reset the BT817/8 will be in the SLEEP state. Upon receiving the SPI ACTIVE command (or CLKEXT followed by SPI ACTIVE command if external clock source is used)".

Possible you could clarify if the internal relaxation osc still available or to what extent?

many thanks!

-a