User Manual

Bluegiga Proprietary Version 1.0
24
11.6 R
EADING FROM WRAP THOR 2022-1
Reading from WRAP THOR 2022-1 is similar to writing to it. An 8-bit read command (00000011)
is sent first, followed by the address of the location to be read. WRAP THOR 2022-1 then outputs
the 16-bit contents of the location on MISO with a check-word during T[15:0] and data during bits
D[15:0].
The check-word is composed of {command, address [15:8]}. The check-word may be used to
confirm a read operation to a memory location. This overcomes the problems encountered with
typical serial peripheral interface slaves, whereby it is impossible to determine whether the data
returned by a read operation is valid data or the result of the slave device not responding.
Figure 14: Read Operation A
Figure 15: Read Operation B