10
©2018 Integrated Device Technology, Inc
September 12, 2018
8A3xxxx Family Programming Guide
A number of registers are grouped together into a module. In general a module contains all the registers needed to interact with a functional
block within the device. Each module in the standard register set is listed in a Register Module Index table showing its module base address,
a brief description of the module’s function and a link to that module’s location in the document. In each module’s sub-section is a similar table
listing all the registers within that module, a brief description of the register and a link to that register’s detailed description. This is shown in
Figure 4: Finding a Register’s Detailed Description in this Document.
Many register modules include a trigger register at the end of the module that must be written to for any other
register changes within that module to take effect. This allows multiple parameters to be setup then all to take
effect at the same time for a particular function within the device. Where present, the trigger register is always the
last register in the module to allow a burst write to be used, triggering on the last write of the burst. Users must
ensure that the trigger register is written to, even if its contents don’t change to trigger the module update.
