I'm having some problems during configuring AD7293 with Controller board.
A few time ago I decided to analyze SPI configuration data sent by EVAL-SDP-CB1Z to Eval-AD7293SDZ. I found that! there are two 24 bit sets of SPI data pulses sent by EVAL-SDP-CB1Z to EVAL-AD7293SDZ, both sets are separated by ~2.5 ms of delay. First 24 bits are sent for setting Registers Page and second 24 bits are sent for setting/accessing Register/Sub Register Value. The screenshot for one set of 24 bit SPI data is shown in the Figure (Fig.1.) below.
Fig.1. One set of 24 bit SPI data pulses
Here, In Fig.1 one set of 24 bit data is further subdivided into three 8 bit sets of data, but in AD7293 datasheet all 24 bits are shown without any subdivision in Figure 56 on Page 73, as shown in figure (Fig.2) below.
Fig.2. Figure 56 on Page 73 from AD7293 datasheet
So, Here is my Question!!! Is it necessary to subdivide 24 bits into three sets of 8 bits data???