Architecture of the Module EIA 921 00

At a Glance

The EIA 921 00 module operates according to the master/slave mode. The master only controls exchanges on the bus.

The AS-i standard sets several operating levels offered by the master:

Profile M0 and M0e - Minimum Master: the master only puts forward the configuration of slaves connected to the bus on power-up, and only input/output exchanges.
Profile M1 and M1e - Full Master: this profile covers all the operating functions set by the AS-i standard,
Profile M2 and M2e - Reduced Master: this profile corresponds to profile M0 operating functions with a slave-parametering option.

The master profiles with an "e" support extended profiles.

NOTE: The EIA 921 00 module corresponds to the profile M2.

Illustration of the Architecture

The figure below shows the architecture of the EIA 921 00 module.

Description of Constituent Elements

The table below shows the different elements that make up the architecture of the module.

Address	Item	Description
1	I/O data	Images showing the inputs and outputs of the AS‐i bus.
2	Parameters	Image showing the parameters of all slaves.
3	Configuration/Identification	This field contains all the I/O codes and identification codes for all the detected slaves.
4	LDS	List of all the slaves detected on the bus.
5	LAS	List of active slaves on the bus.