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Ezairo® 7111 Pre Suite Getting Started Guide
1. I
NTRODUCTION
Ezairo 7111 Pre Suite is a comprehensive turnkey solution for hearing aids. Using the various tools described in
this document, Ezairo 7111 Pre Suite greatly simplifies the development of hearing-aid products. This document
provides a guide for getting started with Ezairo 7111 Pre Suite, illustrating interaction of the system components and
required tools.
2. P
O
RODUCT
VERVIEW
Ezairo 7111 Pre Suite is comprised of the Ezairo 7111 hybrid module and the Ezairo 7111 Firmware Bundle. The
product is configured using Sound Designer Software, the Ezairo 7111 Hybrid Demonstrator Board, and a
programming box that provides PC-to-device communications. The following sections provide a brief overview of
each component. Figure 1 illustrates a typical evaluation and development setup.
Figure 1. Typical Evaluation and Development Setup
2.1 Ezairo 7111 Hybrid Module
Ezairo 7111 is an open-programmable DSP-based hybrid module specifically designed for high-performance
hearing aids. The Ezairo 7111 hybrid is comprised of: the Ezairo 7100 System-on-Chip (SoC) audiology processor;
EA2M, a 2 Mb EEPROM; and all necessary passive components for operating the sub-system and interfacing with
hearing aid transducers.
A hearing-aid connection diagram using the Ezairo 7111 hybrid and the Pre Suite firmware is shown in Figure 2
on page 2.
ON Semiconductor Confidential
www.onsemi.com
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Summary of Contents for ON Semiconductor Ezairo 7111 Pre Suite
- Page 1 RODUCT VERVIEW Ezairo 7111 Pre Suite is comprised of the Ezairo 7111 hybrid module and the Ezairo 7111 Firmware Bundle. The product is configured using Sound Designer Software, the Ezairo 7111 Hybrid Demonstrator Board, and a programming box that provides PC-to-device communications. The following sections provide a brief overview of each component.
- Page 2 ON Semiconductor Confidential Ezairo® 7111 Pre Suite Getting Started Guide Figure 2. Ezairo 7111 Typical Connection Diagram Full details for the Ezairo 7111 hybrid module can be found in the Ezairo 7111 data sheet. 2.2 Ezairo 7111 Firmware Bundle The Ezairo 7111 Firmware Bundle implements all the features required for an advanced hearing aid. These are listed in Table 1, below.
- Page 3 ON Semiconductor Confidential ON Semiconductor Table 1. Ezairo 7111 Firmware Features (Continued) Feature Description Adaptive Directional Microphone Synthesizes a directional microphone pattern from two omnidirectional microphones (front and rear). Automatically steers/adjusts the microphone pattern to minimize interfering noise sources. The directional block includes an optional low-frequency boost to equalize the directional microphone response.
- Page 4 ON Semiconductor Confidential Ezairo® 7111 Pre Suite Getting Started Guide Vbat Regulated Microphone Input-Referred Supply Power Clock Internal Signal Insertion Diagnostics Circuitry Management Management Oscillator Calib. Automatic Frequency Outut-Referred Directional Pre Biquad Receiver Band Signal Insertion Swap Processing Filters Detection...
- Page 5 2.4 Hybrid Demonstrator Board The Hybrid Demonstrator Board is designed to be used with the Ezairo 7111 Pre Suite firmware bundle to develop hearing aids based on Ezairo 7111. The board features many configuration options available via standard 0.1 inch header pins.
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Page 6: Initial Setup
NITIAL ETUP This section describes the initial setup for evaluating the Ezairo 7111 Pre Suite. This includes downloading and installing the Sound Designer Software Windows application, configuring the Ezairo 7111 Hybrid Demonstrator Board, and connecting the programming box. The description is intended for first-time users. If you have already completed the initial setup, you can proceed to Section 4.2.1, “Audio Path Configuration”... - Page 7 Semiconductor > Sound Designer > Sound Designer. Select the appropriate programming box installation procedure from the following list: If you are using a DSP3 (from manufacturer ON Semiconductor), install the DSP3 Programmer driver version 2.1.71 (included in redistribution/DSP3). If you are using a HI-PRO (from manufacturer Otometrics), install the latest HI-PRO driver (currently version 4.02) from Otometrics®;...
- Page 8 ON Semiconductor Confidential Ezairo® 7111 Pre Suite Getting Started Guide 3.2.1 Additional Sound Designer Software Features, Locations, and Installation 3.2.1.1 Documentation Once the Sound Designer Software has been installed, you also have access to all the detailed technical documentation, such as the Ezairo 7111 Firmware Bundle User’s Guide and the Ezairo Sound Designer Software User’s Guide.
- Page 9 ON Semiconductor Confidential ON Semiconductor Table 6. Jumper Configurations for Ezairo 7111 Hybrid Demonstrator Board Jumper/Switch Required Setting Description PSU-SEL Short pins 1&2 Draws power from 6-pin DIN connector VBAT-I Short pins together Not measuring current RCVR-EN Short pins 1&2...
- Page 10 ON Semiconductor Confidential Ezairo® 7111 Pre Suite Getting Started Guide 3.4 Connecting the Programming Box The programming box is connected to the Hybrid Demonstrator Board via the 6-pin DIN connector provided on the Hybrid Demonstrator Board. The programming box connection is either a similar 6-pin DIN connector, or in the case of the Promira, a 34-pin header adapter.
- Page 11 ON Semiconductor Confidential ON Semiconductor Start Sound Designer Software by clicking on the Sound Designer link under the ON Semiconductor tab on the Windows Start menu. When the Select a Workspace dialog box appears, you need to choose a workspace to for Sound Designer Software.
- Page 12 ON Semiconductor Confidential Ezairo® 7111 Pre Suite Getting Started Guide Figure 8. Opening the Control Panel and the Console Window To configure device parameters, click on the Control Panel icon (circled in red in Figure 8, above) and, when prompted, double-click the Ezairo7111.param sample parameter file to open the demo product library, as shown below in Figure 9 on page 13.
- Page 13 ON Semiconductor Confidential ON Semiconductor Figure 9. Selecting the Parameter File To connect to the device, go to the Settings screen. Select the correct Programmer, and Port if applicable. Next, click Detect. A successful detection populates the device information in the Device Info box, as shown in Figure 10 on page 14.
- Page 14 ON Semiconductor Confidential Ezairo® 7111 Pre Suite Getting Started Guide Figure 10. Detecting the Device Use the back button—the arrow in the top left corner—to return to the Control Panel. To connect to the device, click Programmer > Connect. You might get a popup warning you that the device is configured with another library.
- Page 15 ON Semiconductor Confidential ON Semiconductor Figure 11. Upgrading the Firmware 10. Once the connection succeeds, the connection status symbol appears to the right of the file name, as shown below in Figure 12 on page 16. You can hover over this symbol to view the programmer name and the firmware ID of the device.
- Page 16 ON Semiconductor Confidential Ezairo® 7111 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.
- Page 17 ON Semiconductor Confidential ON Semiconductor In the default configuration, only a basic audio path is configured. The front microphone input is enabled but the preamplifier gain is set to 0 dB. All advanced features are disabled. At this point, no audio signal is observed at the device output.
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Page 18: Further Reading
• Ezairo® 7111 Pre Suite Getting Started Guide • Ezairo Sound Designer Software Development Kit (SDK) Programmer’s Guide These documents can be requested through your local ON Semiconductor representative or authorized distributor: • The Ezairo 7111 Datasheet • Ezairo 7111 Hybrid Demo Board User’s Manual... - Page 19 “Typicals” must be validated for each customer application by customer’s technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for implantation in the human body.