SPI Timing Spec of AD9116

Question about the SPI timing spec of AD9116.

1. Could you please let me know the definition of tDV/tDNV using SPI timing chart?

   - tDV (SCLK to Calid SDIO)

   - tDNV (SCLK to Invalid SDIO)

2. Could you please provide Tr/Tf spec of SCLK/SDIO?