Maxscend MXD2670 BLE Smart Remote Control Instruction Manual

Maxscend MXD2670 BLE Smart Remote Control

Product Information

The MXD BLE Smart Remote Control is a complete HW and SW reference design for boxes (STB) and projectors. It is based on Maxscend high RF performance and cost-effective Bluetooth Low Energy device MXD2670, which is an ARM cortex-m0+/ m33 core with 512K on-chip flash memory and a 16-bit Audio ADC support connected to an analog microphone or I2S/PDM connect to digital microphone directly. The firmware runs on the MXD2670, Host software support Android. The design also contains schematics and layout files for the remote control in addition to a software example demonstrating human interface design(HID) functionality and voice sample and compress functionality.

Main Features

• Complete Bluetooth Low Energy advanced remote control reference
  design

• Open source for firmware on MXD26xx

• 17 metal dome buttons matrix

• Low-cost analog microphone inputs for voice/audio

• ADPCM (4:1) Audio CODEC support

• IR LED with NEC encode and decode software

• Modular design of HW and SW

• Stable HID profile compatible with Android and IOS

• Host-side software demo for Android

Applications

• Connected TV
• Set-Top-Box
• Media Centers
• Computers
• Gaming Platforms

Abbreviations and Acronyms

KIT Content

• 1 Complete product example remote control
• 2 AAA batteries

Product Usage Instructions

The MXD BLE Smart Remote Control is a complete development kit that requires no knowledge of embedded software to get start testing with the kit. Follow the below instructions for usage:

1. Install the batteries into the remote control.
2. Download the necessary firmware and host software to implement a full design at both ends of the application.
3. Connect the analog microphone or I2S/PDM connect to the digital microphone directly for voice/audio input.
4. Use the 17 metal dome buttons matrix for remote control functions.
5. The IR LED with NEC encodes and decode software can be used for infrared remote control functions.
6. The stable HID profile is compatible with Android and IOS.
7. Use the host-side software demo for Android to get started with the remote control.

Introduction

• The MXD BLE Smart Remote Control is a complete HW and SW reference design for Bluetooth® Low Energy enabled remote control which wildly be used in smart TV, set-top boxes(STB) and projectors. It offers the best RF performance with ultra-low power consumption and a competitive cost.
• The reference design is based on Maxscend’s high RF performance and cost-effective Bluetooth Low Energy device MXD2670. It is based an ARM cortex-m0+/ m33 core with 512K on-chip flash memory, a 16-bit Audio ADC support connect to an analog microphone or I2S/PDM connect to a digital microphone directly.
• All necessary firmware and host software are provided to implement a full design at both ends of the application. The firmware runs on the MXD2670, Host software support Android.
• The design also contains schematics and layout files for the remote control in addition to a software example demonstrating human interface design(HID) functionality and voice sample and compress functionality.

Main Feature

• Complete Bluetooth Low Energy advanced remote control reference design
• Open source for firmware on MXD26xx
• 17 metal dome buttons matrix
• Low-cost analog microphone inputs for voice/audio
• ADPCM (4:1) Audio CODEC support
• IR LED with NEC encode and decode software
• Modular design of HW and SW
• Stable HID profile compatible with Android and IOS
• Host-side software demo for Android

Applications

• Connected TV
• Set-Top-Box
• Media Centers
• Computers
• Gaming Platforms

KIT Content

• 1 Complete product example remote control
• 2 AAA batteries

Abbreviations and Acronyms

Table 1.1 Abbreviations and Acronyms

Solutions

The MXD BLE Smart Remote Control development kit is a complete development kit that requires no knowledge of embedded software to get start testing with the kit. All design file including hardware and software are open for download.

Block Diagram

There are multiple devices available for the RCU reference design and Figure 2.1 shows the components used in the BLE Smart Remote Controller.

MXD2670 Function Block Diagram
The MXD2670 device is a SOC MCU targeting Bluetooth Low Energy voice remote control applications. The on-chip 16-bit audio ADC and I2S/PDM interface make it very easy to connect to analog and digital microphones directly.

Functions

System Design

Embedded Software

• MXD BLE Smart Remote Control development kit including embedded software, it implement on MXD2670 devices.
• The embedded software realize voice sample, compress and transmit via BLE protocol. Also, it implements an infrared encode and decode function.
• The CPU scans a 17 keys matrix, when one key is pressed it will run the interrupt program to emit the infrared signal or record the voice. It supports short-press operation or long-press operation at some keys.
• A standard Human Interface Design(HID) profile is realized to connect to smart devices, such as PC(windows), TV, and smartphone(Android). The standard ASCI Key value will send to the devices when a key is pressed.
• When the voice key is pressed, the CPU will sample the voice with an analog microphone, the sample rate is support 16K and 32K. At the same time CPU runs an ADPM(4:1) codec to compress the voice signal and then send it to the host by BLE protocol with a special voice transmission service.

Key Characters

Table 4.1 Power Consumption

Wake up time to BLE connected

with Infrared emit

| From the shutdown mode| <1200| mS
From Sleep mode| < 700| mS
Wake up time to BLE connected

without Infrared emit

| From the shutdown mode| <800| mS
From Sleep mode| < 300| mS
Wake-up time without BLE

Infrared emit

| From the shutdown mode| <600| mS
From Sleep mode| < 3| mS
Infrared current| 20m| < 100| mA
Audio Sample Rate| 16-bit| 16K/32K|
Audio PGA|  | 0-30| dBm

Power consumption

Table 4.2 Power Consumption

uA
Short key press| 1.80| 1.82| 2.33| mA
Long key press| –| 2.07| 2.2| mA
Short voice key press| –| 4.73| –| mA
Long voice key press| –| 6.31| 6.5| mA

FCC STATEMENT

This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
NOTE: The manufacturer is not responsible for any radio or TV interference caused by unauthorized modifications or changes to this equipment. Such modifications or changes could void the user’s authority to operate the equipment.

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

The device has been evaluated to meet general RF exposure requirements, The device can be used in portable exposure conditions without restriction. Federal Communication Commission (FCC) Radiation Exposure Statement Power is so low that no RF exposure calculation is needed. Federal Communication Commission (FCC) Radiation Exposure Statement When using the product, maintain a distance of 20cm from the body to ensure compliance with RF exposure requirements. This device is intended only for OEM integrators under the following conditions: 1. The antenna must be installed such that 20 cm is maintained between the antenna and users. 2. The transmitter module may not be co-located with any other transmitter or antenna. As long as the two conditions above are met, additional transmitter testing will not be required. However, the OEM integrator is still responsible for testing their end product for any additional compliance requirements required for the installed module.
Important Note: In the event that these conditions cannot be met (for example certain laptop configurations or co-location with another transmitter), then the Federal Communications Commission of the U.S. Government (FCC) and the Canadian Government authorizations are no longer considered valid and the FCC ID cannot be used on the final product. In these circumstances, the OEM integrator shall be responsible for re-evaluating the end product (including the transmitter) and obtaining a separate FCC authorization in the U.S. and Canada. OEM Integrators – End Product Labeling Considerations: This transmitter module is authorized only for use in devices where the antenna may be installed such that 20 cm may be maintained between the antenna and users. The final end product must be labeled in a visible area with the following: “Contains, FCC ID: 2BAM2-RCE70F01”. The grantee’s FCC ID can be used only when all FCC compliance requirements are met.
OEM Integrators – End Product Manual Provided to the End User: The OEM integrator shall not provide information to the end user regarding how to install or remove this RF module in the end product user manual. The end user manual must include all required regulatory information and warnings as outlined in this document. Appropriate measurements (e.g. 15 B compliance) and if applicable additional equipment authorizations (e.g. SDoC) of the host product to be addressed by the integrator/manufacturer.
This module is only FCC authorized for the specific rule parts 15.247, 15.407 listed on the grant, and the host product manufacturer is responsible for compliance to any other FCC rules that apply to the host product as being Part 15 Subpart B compliant.

MXD2670 Turkey Solution application notes  Copyright © 2006 Maxscend Technologies Inc. All rights reserved. Maxscend Confidential

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