How to AD7190 multi-rate (variable 1= 1Hz, variable 2= 4800Hz)

SPI_SendByte(0x08);
SPI_SendWord(0X00280001);
SPI_SendByte(0x58);
AD1_Data=SPI_ReadWord();
SPI_SendByte(0x08);
SPI_SendWord(0X002803ff);
SPI_SendByte(0x58);
AD2_Data=SPI_ReadWord();

 
This kind of structure One channel outputs two rates

SPI_SendByte(0x08);
SPI_SendWord(0X00280001);
SPI_SendByte(0x58);
AD1_Data=SPI_ReadWord();
SPI_SendByte(0x08);
SPI_SendWord(0X002803ff);
SPI_SendByte(0x58);
AD2_Data=SPI_ReadWord();

 
This kind of structure One channel outputs two rates