Data Sheet

ADIN2299

THEORY OF OPERATION

analog.com

Rev. 0 | 13 of 21

The main use case for the ADIN2299 is to provide multiprotocol,

industrial Ethernet connectivity to field devices that require the

robust, deterministic Ethernet capability supported by mainstream

industrial protocols.

Figure 7 shows the ADIN2299 system block diagram. The commu-

nications controller is the ADSP-CM409F within the module, while

the application processor is the applications processor. The applica-

tions processor communicates with the communications controller

on the ADIN2299 module via the Unified Interface common lan-

guage. The timing for the interfaces of the applications processor

of the ADIN2299 module are detailed in the Timing Characteristics

section. The Unified Interface is described in the Unified Interface

Control Document User Guide.

As shown in the typical application circuit shown in Figure 16, the

user is responsible for connecting the following to the ADIN2299

module:

►

3.3 V power and ground for the ADIN2299 module.

►

An industrial Ethernet connection: magnetics and RJ-45 connec-

tions to the industrial network from the PHY outputs.

►

An applications processor interface: via SPI, UART, or Ethernet.

►

Industrial Ethernet LEDs (module (MOD) and network (NET)).

Figure 7. System Block Diagram