Datasheet

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12. Application Examples

Smartphone or High-Level O/S Wearable Design

The following figure illustrates the EOS S3 platform as a discrete sensor hub, offloading the always-on, real-time

processing from the Application Processor. The voice subsystem is enabled, it handles the always-on voice recognition.

The hardware bypass path on the PDM interface enables voice recognition to be offloaded to the EOS S3 platform, and

then normal voice communication to be handed off seamlessly to the dedicated voice CODEC.

Figure 58: Example of a Smartphone or High-Level Operating System Wearable Design

PMIC

Battery

BLE

WiFi

GNSS

CodecFlash

Application

Processor

GPIO

Voice

PDM I2S

INT

I2C/SPI

INT

SPI

I2S

Sensor

32 kHz

EOS S3

Real-Time Operating System Wearable Design

The following figure illustrates the EOS S3 platform as a true SoC in a RTOS-based Wearable or IoT device. In this use

case, the EOS S3 platform acts as the host processor running the operating system, the always-on, real-time sensor

processing, and the interface to the connectivity device(s) in the system.

When the voice subsystem is enabled, it handles the always-on voice recognition. The on-chip programmable logic can

also be used to handle potential glue-logic or system-level power management within the wearable device.