Microchip Technology IS2066B User manual

IS2066B

IS2066B Evaluation Board User's Guide

Introduction

This document provides detailed information about the Microchip IS2066B EVB and its WST (Wireless Stereo

Technology) application.

The IS2066B EVB enables the user to evaluate and demonstrate the functionality of the WST application on an EVB

platform. The IS2066B EVB includes status LEDs and an integrated configuration and programming interface for

plug-and-play capability, which enables rapid prototyping and faster time to market.

In addition to the IS2066B EVB, software tools and applications are provided to demonstrate the Bluetooth

®

WST

connections to the on-board IS2066B System-on-Chip (SoC) with options for configuring or programming it.

Features

• IS2066B SoC Configured for WST Application, Qualified for Bluetooth v5.0 Specifications

• On-board Audio Amplifier (MAX97220) for Common 4-pin Headphone Connections

• On-board Audio Control Buttons for Playback Operation

• 5V Power Supply Switch for IN-BOX and OUT-BOX Simulation

• MIC-In and Stereo Out Ports

• USB Connector to update IS2066B EEPROM Parameters (over MCP2200 USB to UART converter)

• Li-ion Battery Connector

• On-board SMA Connector for Dipole Antenna

• On-board Thermistor

User Guide

DS50002946A-page 1

Table of Contents

Introduction.....................................................................................................................................................1

Features.................................................................................................................................................. 1

1. Quick References....................................................................................................................................3

1.1. Reference Documentation............................................................................................................3

1.2. Hardware Requirements.............................................................................................................. 3

1.3. Software Requirements................................................................................................................3

2. Kit Overview............................................................................................................................................ 4

2.1. Kit Contents..................................................................................................................................4

3. Hardware.................................................................................................................................................6

3.1. Hardware Features.......................................................................................................................6

4. Application Demonstration.....................................................................................................................11

4.1. Establishing a Connection.......................................................................................................... 11

4.2. Audio Streaming and Auto Role Switch Demonstration............................................................. 12

4.3. Handset Profile (HSP) and Hands Free Profile (HFP) Demonstration....................................... 12

5. Configuring IS2066B EVB.....................................................................................................................14

5.1. UI Tool Configuration..................................................................................................................14

5.2. DSP Tool Configuration.............................................................................................................. 19

5.3. MPET Tool Configuration........................................................................................................... 25

6. Updating EEPROM Parameters............................................................................................................34

7. Appendix A: Schematics....................................................................................................................... 39

7.1. Reference Schematics............................................................................................................... 39

8. Document Revision History...................................................................................................................47

The Microchip Website.................................................................................................................................48

Product Change Notification Service............................................................................................................48

Customer Support........................................................................................................................................ 48

Microchip Devices Code Protection Feature................................................................................................ 48

Legal Notice................................................................................................................................................. 48

Trademarks.................................................................................................................................................. 49

Quality Management System....................................................................................................................... 49

Worldwide Sales and Service.......................................................................................................................50

IS2066B

User Guide

DS50002946A-page 2

1. Quick References

1.1 Reference Documentation

For further study, refer to the following:

• IS2066B Bluetooth

®

Wireless Stereo Technology ROM SoC Data Sheet (DS70005398)

• IS2066B UI Tools Application Note (AN3100)

1.2 Hardware Requirements

• Two IS2066B Evaluation Boards

• Bluetooth Enabled Smartphone:

– Android

™

device running on Android 4.3 or later version

– iOS: iPhone

®

4S or later version

• Windows

®

Host PC with USB Port

• 4-pin Headphone with Microphone

• Micro-B USB Cable

1.3 Software Requirements

Note: For the following software tools and firmware files, refer to https://www.microchip.com/wwwproducts/en/

IS2066.

• UITool (User Interface Tool)

• DSPTool

• MPtool (Mass Production EEPROM Tool - MPET)

• EEPROM Tool

IS2066B

Quick References

User Guide

DS50002946A-page 3

2. Kit Overview

This chapter provides an overview of the IS2066B EVB. The following figure illustrates the top view of the IS2066B

EVB with its components.

Figure 2-1. IS2066B EVB Components

Mode switch (SW301)

IS2066B SoC

Audio amplifier (MAX97220)

Audio jack (P1)

Victoria interface (JP301)

SMA connector (CN301)

Power switch (SW201)

Battery connector (J201)

USB to UART converter (MCP2200)

Micro-B USB connector (J701)

GPIO header (J903)

Two status LEDs (D901, LD901)

Volume up/Forward button

Reset button (SW801)

MFB button

Volume down/Reverse button

Note: For more details on the features, refer to 3. Hardware.

2.1 Kit Contents

The IS2066B EVB kit includes the following:

• Two IS2066B EVB, One for Right and One for Left

• Two Type-A to Micro-B USB Cables

• Two Dipole Antenna

• Two 4-pin Headphones

• Two Batteries:

– The batteries may or may not be available based on the geographic location. In case of no batteries,

contact your Microchip sales office for assistance. A list of Microchip offices for sales and service is

provided on the back page of this document.

IS2066B

Kit Overview

User Guide

DS50002946A-page 4

Figure 2-2. IS2066B Kit Contents

Type-A to Micro-B USB Cable

Headphone

Dipole Antenna

IS2066B EVB

Battery

Note: If any part of the IS2066B EVB is missing, contact your Microchip sales office for assistance. A list of

Microchip offices for sales and service is provided on the back page of this document.

IS2066B

Kit Overview

User Guide

DS50002946A-page 5

3. Hardware

This chapter describes the hardware features of the IS2066B EVB. The IS2066B EVB includes a range of peripheral

components.

Figure 3-1. IS2066B EVB BLOCK DIAGRAM

SYS_PWR

LED

2

BAT_IN

Buttons and

Switches

MIC and

Bias Circuit

Audio

Amplifier

Status LEDs

Li-Ion

Battery

16 MHz

Crystal

USB to UART

(MCP2200)

ADAP_IN

Micro-B

USB

12 MHz

Crystal

3V3

LDO

P2_0

Mode

Switch

LED

1

GPIO

Header

I/O

MIC_BIAS

MIC1_P

MIC1_N

IS2066B SoC

Victoria

Header

Matching

Circuit

Chip Antenna or SMA

Audio

4-pin

Jack

Rx

UART

IS2066B Evaluation Board

RTx

Tx

5V

3.1 Hardware Features

The following sections provide detailed information on the IS2066B EVB components. To locate these components in

the IS2066B EVB, refer to Figure 2-1.

3.1.1 Power Supply

The IS2066B EVB can be powered by the following supplies:

• Li-ion battery (J201) – when using a battery input, mount a jumper on (JP202). Do not mount a jumper on

(JP201). JP201 is a provision for connecting a battery power source with 2.54 mm connector.

• USB (J701) – USB cable is connected to a PC, which provides 5V power for battery charging and testing

purposes.

3.1.2 USB Connectivity

The IS2066B EVB has one USB port (J701) that can be connected to a host PC using a micro-USB cable, where the

USB signals are converted to/from the UART by the serial converter MCP2200.

IS2066B

Hardware

User Guide

DS50002946A-page 6

3.1.3 Switches and Push Buttons

The functions of the switches and push buttons on the IS2066B EVB are:

• SW801 – Reset button for the IS2066B (RST_N)

• SW301 – Mode selection switch for configuring IS2066B into Application mode or Test mode

• SW802 – Multifunction button/Push button to turn on/off the IS2066B EVB (MFB/PWR)

• SW803 – By default, this button is not configured in the EVB, can be configured using the UI tool

• SW804 – By default, this button is not configured in the EVB, can be configured using the UI tool

The following table provides the settings of mode selection switch (SW301) to configure the IS2066B in various

operating modes.

Table 3-1. Mode Selection Switch (SW301) Details

Mode Button Definition

Test mode SW301 is placed in ON (P2_0: Low) position: ON

Application mode SW301 is placed in 1 (P2_0: High) position: OFF

3.1.4 LEDs

The functions of LEDs driven by IS2066B EVB are listed as follows:

• LED1 – Blue (LD901) - Configurable by UITool

• LED2 – Red (D901) - Configurable by UITool

3.1.5 Jumpers and Headers

The following jumpers and headers are available on the IS2066B EVB. GPIO header (J903) provides the GPIO

interface for the IS2066B EVB. The following figure illustrates GPIO header (J903) and the following table provides

the pin details and description.

Figure 3-2. GPIO Header (J903)

Table 3-2. GPIO Header (J903) Pins

Pin Number Pin Name

1 P0_0

2 P2_0

3 P2_7

4 NC

5 P0_2

IS2066B

Hardware

User Guide

DS50002946A-page 7

...........continued

Pin Number Pin Name

6 MFB

7 P0_3

8 HCI_RXD

9 P1_3

10 HCI_TXD

11 P1_5 (AMP_EN)

12 RST_N

13 GND

14 GND

15 NC

16 NC

17 NC

18 NC

19 GND

20 GND

The Victoria interface header (JP301) provides the interface for the IS2066B to connect to the Victoria test board

(production platform). The following figure illustrates the Victoria interface header (JP301) and the following table

provides the pin details and description.

Figure 3-3. Victoria Interface Header (JP301)

Table 3-3. External MCU/DSP Header (JP301) Pins

Pin Number Pin Name Pin Number Pin Name

1 NC 2 NC

3 NC 4 NC

5 NC 6 NC

IS2066B

Hardware

User Guide

DS50002946A-page 8

...........continued

Pin Number Pin Name Pin Number Pin Name

7 MIC_P1 8 AOHPR

9 MCI_N1 10 AOHPL

11 GND 12 GND

13 BK1_OUT 14 CLDO_O

15 HCI_RXD 16 NC

17 HCI_TXD 18 NC

19 VDD_IO 20 CODEC_VO

21 BAT_IN 22 GND

23 BAT_IN 24 GND

25 NC 26 NC

27 5V_VIC 28 NC

29 5V_VIC 30 BK2_OUT

31 MFB 32 NC

33 NC 34 RFLDO_O

35 NC 36 GND

37 P2_0 38 GND

39 GND 40 GND

MIC header (JP601) is used for connecting a microphone to the IS2066B EVB. The following figure illustrates the

MIC header (JP601) and the following table provides the pin details and description.

Figure 3-4. MIC Header (JP601)

1 2

3

Table 3-4. MIC Header (JP601) Pin Details

Pin Number Pin Name

1 MIC_P1

2 AGND

3 MIC_N1

Speaker header (JP602) is used for connecting a speaker to the IS2066B EVB. The following figure illustrates the

(JP602) header and the following table provides the pin details and description.

IS2066B

Hardware

User Guide

DS50002946A-page 9

Figure 3-5. Header (JP602)

1 2

3

Table 3-5. Header (JP602) Pin Details

Pin Number Pin Name

1 AOHPL

2 AOHPR

3 AOHPM

IS2066B

Hardware

User Guide

DS50002946A-page 10

4. Application Demonstration

This chapter describes how to establish a WST connection between two IS2066B EVBs and a host device, and

perform Audio Streaming and Auto Role Switch demonstration and HSP/HFP demonstration. It also demonstrates

the process of updating the parameters using various tools.

4.1 Establishing a Connection

To establish the Bluetooth connection between two IS2066B EVBs and a host device, perform the following actions:

1. Set the mode selection switch (SW301) to Application mode on both EVBs, see Table 3-1.

2. Connect the 4-pin headphone provided in the kit to the audio jack (P1) on both EVBs.

3. Connect the 4.2V battery to the battery connector (J201) on both EVBs.

4. Connect the antenna provided in the kit to the SMA connector (CN301) on both EVBs.

5. Make sure that the 5V On/Off switch is in the ON position.

6. Connect the USB cable from a PC host (or a USB power source) to the Micro-B USB port (J701) for both

EVBs.

Note: The two EVBs in the IS2066B EVB kits are pre-programmed and pre-paired with the WST application.

Figure 4-1. Using the Evaluation Board

7. Observe that the LEDs for both EVBs turn on. It is simulated as an IN-BOX condition (that is, both left and right

inside the charger box) and the EVB units perform automatic WST pairing (primary and secondary) when they

are placed close to each other.

The WST pairing only takes 2-3 seconds. If the pairing process is successful, then:

– The EVB with the red LED blinking changes to steady red, which indicates that it is the secondary

earbud.

– The other EVB with the blue LED blinking remains the same, which indicates that it is the primary earbud.

– If the pairing is not successful, then both ear buds show a blinking red LED.

– Power cycle (SW201 5V turn off and on again) both EVBs and start again.

IS2066B

Application Demonstration

User Guide

DS50002946A-page 11

8. Turn the SW201 5V supply to the OFF position for both EVBs and observe the LED blinking for a very short

period and remains the same as step 7. It is simulated as an OUT-BOX condition (that is, both the left and

right outside the charger box) now. The user can perform smartphone or Bluetooth source pairing as listed

below:

– Press the MFB button for 1s and release.

– Observe red and blue LEDs blinking alternatively on the primary side, voice prompt “ready to pair” should

be heard as well. Secondary side LED remains a steady RED.

– In your smartphone device, turn on Bluetooth and connect to the “WSTxxx” device.

Once the connection is established, the LED of the primary EVB turns to steady blue, and the LED of the

secondary EVB remain a steady red. The device name on the smartphone is displayed as “connected” in the

Bluetooth settings. With the default settings, the IS2066B EVB enables the Advanced Audio Distribution Profile

(A2DP) for audio playback and Audio Video Remote Control Profile (AVRCP) for player control.

4.2 Audio Streaming and Auto Role Switch Demonstration

Perform the following actions to stream out audio on the IS2066B EVB using a host device (a PC or a smartphone).

1. Establish the connection between the IS2066B EVB and a host device using the procedure listed in 4.1

Establishing a Connection.

2. Once the connection between the IS2066B EVB and the host device is established, open the audio source on

the host device. Microchip recommends using a media player.

3. Press the MFB button for play/pause on either the primary or secondary EVB.

4. Auto role switching during music streaming can be performed as mentioned below:

4.1. Turn on the 5V power switch (SW201) for the primary side EVB (simulate IN-BOX for primary), music

streaming should continue at the other side, auto role switching (secondary side becomes primary)

should be performed as well.

4.2. Turn off the 5V power switch (SW201), EVB should link back automatically as secondary and

continue the music.

4.3. Turn on the 5V power switch (SW201) for secondary side EVB (simulate IN-BOX for secondary),

music streaming should continue at the other side.

4.4. Turn off the 5V power switch (SW201), unit should link back automatically as secondary and continue

the music.

4.5. Turn on the 5V power switch (SW201) for both primary and secondary side EVB (simulate IN-BOX

for both sides), connection to the smartphone or Bluetooth sources should be disconnected.

5. Power-off EVB:

– For both IN-BOX and OUT-BOX state, long press MFB by 5s to turn off the EVB.

– If the battery is fully charged (IN-BOX state), the EVB turns off automatically after 20s to save power

consumption.

6. Perform the following procedures to Master Reset (clear all pairing record) the IS2066B EVB:

6.1. Turn off the 5V power switch (SW201) for both EVBs, to simulate both EVBs as OUT-BOX.

6.2. Make sure the EVB is in shut down condition by pressing the MFB button for 5s, and wait until the

"shut down" tone is audible.

6.3. Long press MFB for more than 20s until the red and blue LEDs blink 5 times.

6.4. Each EVB can be Master Reset separately.

6.5. After Master Reset, the earbud turns off with no LED indication.

6.6. After master reset, the earbud must be put back to the charger box for left and right earbuds to link

up (WST pairing) before further testing.

4.3 Handset Profile (HSP) and Hands Free Profile (HFP) Demonstration

In this demonstration, the user can explore the Headset Profile (HSP) or Hands-Free Profile (HFP) setting to receive

an incoming voice call from a paired smartphone. Perform the following procedure for demonstration.

IS2066B

Application Demonstration

User Guide

DS50002946A-page 12

1. Establish the connection between the IS2066B EVB and a host device using the procedure listed in 4.1

Establishing a Connection.

2. Initiate a call from another phone to the smartphone that is paired with the IS2066B EVB. The A2DP stream

pauses and the ringtone is played on the speaker.

3. Press the MFB button on the IS2066B EVB to accept the incoming call. On the primary side both red and blue

LEDs should be flashing and on the secondary side steady red LED flashes.

IS2066B

Application Demonstration

User Guide

DS50002946A-page 13

5. Configuring IS2066B EVB

The IS2066B EVB can be configured and various parameters can be customized using the UI tool and DSP tool, and

then parameters are saved in a file. Using the MPET tool, the saved files are merged into the *.ipf file, and then

this merged file is programmed into the EEPROM. After EEPROM is programmed, restart the device to see the effect

of the customized parameters.

5.1 UI Tool Configuration

The User Interface (UI) tool is a configuration tool that allows the user to change the IS2066B module parameters,

such as device name, enable/disable pairing mode, Bluetooth Low Energy connection settings, configure the LEDs

and enable/disable battery functions.

Note: Both left and right EVB’s UI must be configured separately. For UI tool detailed information, refer to UITool

Application Note (https://www.microchip.com/wwwproducts/en/IS2066).

To configure the UI parameters, perform the following steps:

1. Open the UI configuration tool and click OK to configure the UI parameters.

Note: UITool_IS2066B_236_v1.0.12 is used for this demonstration.

Figure 5-1. UI Configuration Tool - Welcome Window

2. In the UI configuration tool, click Load.

IS2066B

Configuring IS2066B EVB

User Guide

DS50002946A-page 14

Figure 5-2. UI Configuration Tool

3. From the Open window, select the default UI parameters text file (provided with the UI tool) for the

IS2066B module, and then click Open, see the following figure.

IS2066B

Configuring IS2066B EVB

User Guide

DS50002946A-page 15

Figure 5-3. Loading Default UI Parameters

4. After loading the UI parameters, click Edit to customize the UI parameters on the Main Feature window.

Note: Default file "UITool_IS2066B_236_Auto Mode_Default(Left)_v1.0.12" is selected for this

demonstration.

IS2066B

Configuring IS2066B EVB

User Guide

DS50002946A-page 16

Figure 5-4. Editing Parameters

5. In the Main Feature window, the user can enable or disable the features required for their application and click

Next.

Figure 5-5. Main Feature Settings

6. In the System and Functional Settings window, the user can use the highlighted tabs to configure UI

parameters and then click Finish.

IS2066B

Configuring IS2066B EVB

User Guide

DS50002946A-page 17

Figure 5-6. System and Functional Settings

7. After clicking on Finish, the following notification page appears. Click OK.

Figure 5-7. Notification Page

8. Click Save to save the file and then click Exit to exit from this demonstration.

IS2066B

Configuring IS2066B EVB

User Guide

DS50002946A-page 18

Figure 5-8. Saving and Exiting From UI Tool Configuration

5.2 DSP Tool Configuration

The DSP configuration tool provides the visual interface to configure the DSP parameters for the voice and the audio

signal processing functions. To configure the DSP parameters, perform the following actions:

1. Open the DSP tool and a dialog displays with various options (tabs) to configure the parameters, as illustrated

in the following figure.

Note: Download and install the DSP tool, which is available on the Microchip web site: https://

www.microchip.com/wwwproducts/en/IS2066.

IS2066B

Configuring IS2066B EVB

User Guide

DS50002946A-page 19

Figure 5-9. DSP Tool Settings

2. In the Voice Function tab, the user can set the parameters as highlighted in the following figure.

IS2066B

Configuring IS2066B EVB

User Guide

DS50002946A-page 20

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Microchip Technology IS2066B User manual

Microchip Technology IS2066B User manual

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