ZHCSE08D May 2015 – January 2020 TMP107
PRODUCTION DATA.
The data phase is the last phase of communication. Every register location consists of two words of data. Therefore, this last phase of communication consists of at least two bytes of data with the least significant byte sent first, followed by the most significant byte.
For a write operation, the host sends data to the device or devices at the specified register pointer location.
For a read operation, the specified device or devices respond back with the data from the location specified in the register pointer phase.
Depending on the value of G/nI bit in the command and address phase, the data in this phase are either written to a targeted individual device, or to multiple devices in the daisy-chain. Individual and global read or write operations are explained in more detail in subsequent sections. Figure 22 shows a diagram of the data phase.