How to exploit the mcp33131 spi/adc at 1 Msps (Sietse)

Hello list,How can I use the MCP33131 ADC at full speed? Note that apart from the SPI signalling CNVST has to be used for each conversion, so has to be precise at 1 MHz.When hoping to use a microcontroller DMA is inevitable, but how to generate the CNVST ..