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ADS131E08EVM-PDK: VCAP1 voltage of ADS131E08

Part Number: ADS131E08EVM-PDK
Other Parts Discussed in Thread: ADS1299

Question about the voltage of VCAP1.

In the Initial Flow at Datasheet (Page 50, Figure 53. Initial Flow at Power Up)

      - However,  VCAP1 is -1.3V with negative AVSS(-2.5V).

      - VCAP1 shoule be above 1.1V ?  or 1.1V higher than AVSS ?

PDK is works well with negative voltage of VCAP(-1.3V).