ZHCSM18A January 2023 – December 2023 ADS9815 , ADS9817
PRODUCTION DATA
Select the desired register bank by writing to register address 0x03 in register bank 0. Register read access is enabled by setting SPI_RD_EN = 1b and SPI_MODE = 1b in register bank 0. As illustrated in Figure 6-10, registers can be read using two 24-bit SPI frames after SPI_RD_EN and SPI_MODE are set. The first SPI frame selects the register bank. The ADC returns the 16-bit register value in the second SPI frame corresponding to the 8-bit register address.
As illustrated in Figure 6-10, steps to read a register are: