8.12.4 Accessing 24- and 32-Bit Registers

For 24- and 32-bit registers, the read and write access is done the same way as described for 16-bit registers, except there are two temporary registers for 24-bit registers and three temporary registers for 32-bit registers. Write the Most Significant Byte (MSB) last when writing to the register. Read the Least Significant Byte (LSB) first when reading the register.