www.onsemi.com
16
ON Semiconductor Confidential
Ezairo® 7111 V2 Pre Suite Getting Started Guide
Figure 12. Successful Connection
4.2 Example Operations
4.2.1 Audio Path Configuration
Once connected to a device, it is possible to read, write and burn parameters to the Ezairo 7111 internal NVM. The
steps below illustrate how to configure the built-in sound generator to generate an audio signal from the Ezairo 7111.
4.2.1.1 What You Need
Before beginning, you need to connect headphones or some other audio equipment to the output of the Ezairo 7111
Hybrid Demonstrator Board. Please refer to the
Ezairo 7111 Hybrid Demo Board User’s Manual
for details.
The direct audio output from Ezairo 7111 is a pulse density modulated signal that can be used to directly drive
hearing aid receivers or high impedance headphones. It is available on pins 2 and 4 of the header pins labelled
FILTEN0
.
The Demonstrator Board also provides a low-pass filtered output that is more appropriate for connection to sound
cards and other audio equipment. The filtered output is enabled by connecting jumpers across pins 1 and 2 and 3 and 4
of header pin connector labelled
FILTEN0
. The filtered audio output is then available across pins labelled
OUT0
.
4.2.1.2 Enable the Sound Generator
If you are using a new device for the first time, all parameters need to be set to their default settings, as shown in the
E7111V2.param
file. If you are uncertain of the device state, or to ensure that the Sound Designer Software parameters
are consistent with those stored in the device, you can perform a
Burn All to NVM
operation. This operation burns all
default parameters from the current parameter file into NVM on the device, ensuring consistency with Sound Designer
Software.
