Microchip Technology BM62 Manual de usuario

Preliminary

2017 Microchip Technology Inc.

DS60001403C-Page 1

BM62/64

Bluetooth®

4.2 Stereo Audio Module

Features

•Qualified for Bluetooth v4.2specification

•Supports A2DP 1.3,AVRCP 1.6, HFP 1.6, HSP

1.2 and SPP 1.2

•Supports Bluetooth 4.2 dual-mode(BDR/EDR/

BLE) specifications

•Stand-alone module with on-board PCBantenna

and Bluetooth stack

•Supports high resolution up to 24-bit, 96kHz

audio data format

•Supports to connect two hosts withHFP/A2DP

profilessimultaneously

•Transparent UART mode for seamless serial data

over UARTinterface

•Supports virtual UART communication between

host MCU and smartphone applications byBlue-

tooth SPP or BLElink

•Easy to configure with Windows®

GUI or directly

by external MCU

•Supports firmware fieldupgrade

•Supports one microphone

•Compact surface mountmodule:

-BM62: 29 x 15 x 2.5 mm

-BM64: 32 x 15 x 2.5 mm

•Castellated surface mount pads for easyand

reliable host PCB mounting

•RoHS compliant

•Ideal forportable batteryoperated devices

•Internal battery regulatorcircuitry

DSP Audio Processing

•Supports 64 kbps A-Law, -Law PCM format/

Continuous Variable Slope Delta (CVSD) modula-

tion for SCO channel operation

•Supports 8/16 kHz noisesuppression

•Supports 8/16 kHz echocancellation

•Supports Modified Sub-Band Coding(MSBC)

decoder for wide bandspeech

•Built-in High Definition Clean Audio(HCA) algo-

rithms for both narrow band and wide band

speech processing

•Packet loss concealment(PLC)

•Built-in audio effect algorithms to enhanceaudio

streaming

•Supports Serial Copy Management System

(SCMS-T) contentprotection

FIGURE 1: BM62 MODULE

FIGURE 2: BM64 MODULE

Audio Codec

•Sub-band Coding (SBC) and optionalAdvanced

Audio Coding (AAC)decoding

•20-bit digital-to-analog converter (DAC)with

98 dB SNR

•16-bit analog-to-digital converter (ADC) with

92 dB SNR

•Supports up to 24-bit, 96 kHz I2S digital audio

(BM64 only)

Preliminary

DS60001403C-Page 2

2017 Microchip Technology Inc.

BM62/64

Peripherals

•Built-in lithium-ion and lithium-polymerbattery

charger (up to 350 mA)

•Integrated 1.8V and 3V configurableswitching

regulator and low-dropout (LDO)regulator

•Built-in ADC for battery monitoring andvoltage

sense

•Built-in ADC for charger thermalprotection

•Built-in undervoltage protection(UVP)

•AnAuxiliary input port for external audio input

•Two LED drivers

•Multiple I/O pins for control andstatus

RF/Analog

•Frequency spectrum: 2.402 GHz to 2.480GHz

•Receive sensitivity: -90 dBm (2 MbpsEDR)

•Output Power

- BM64 Class 1: +15 dBmtypical

- BM62/64 Class 2: +2 dBmtypical

HCI Interface

•High-speed HCI-UART interface (supports upto

921,600 bps)

MAC/Baseband Processor

•Supports Bluetooth 4.2dual-mode

- BDR/EDR transport for audio, voice,and

SPP data exchange

- BLE transport for proprietary transparent

service andApple NotificationCenter Service

(ANCS) data exchange

Operating Condition

•Operating voltage: 3.2V to4.2V

•Operating temperature: -20°C to+70°C

Compliance

•Bluetooth SIG QDID: 83345 (BM62, BM64

Class 2) and 83336 (BM64 Class1)

•Certified to the United States (FCC), Canada (IC),

European Economic Area (CE), Korea (KCC), Tai-

wan (NCC), Japan (MIC), China (SRRC), and

Brazil (ANATEL) radioregulations

Applications

•Portable speaker

•Multiple speakers

•Headset

•Sound bar

Description

The BM62/64 Stereo Audio module is a fully qualified

Bluetooth v4.2 dual-mode (BDR/EDR/BLE) module for

designers to add wireless audio and voice applications

to their products. The BM62/64 module is a Bluetooth

Special Interest Group (SIG) certified module that

provides a complete wireless solution with a Bluetooth

stack, an integrated PCB antenna, and worldwide radio

certifications in a compact surface-mountpackage.

The BM62/64 module has several SKUs. The BM62

module is a Class 2 device and the BM64 module is

available in both Class 1 and Class 2 versions.

BM62/64

Preliminary

2017 Microchip Technology Inc.

DS60001403C-Page 3

Table of Contents

1.0 Device Overview......................................................................................................................................................5

2.0 Audio......................................................................................................................................................................15

3.0 Transceiver............................................................................................................................................................19

4.0 Power Management Unit .......................................................................................................................................21

5.0 Application Information ..........................................................................................................................................23

6.0 Printed Antenna Information ..................................................................................................................................39

7.0 Physical Dimensions..............................................................................................................................................43

8.0 Electrical Characteristics........................................................................................................................................47

9.0 Soldering Recommendations.................................................................................................................................55

10.0 Ordering Information............................................................................................................................................57

Appendix A: Certification Notices.................................................................................................................................59

Appendix B: Revision History.......................................................................................................................................69

TO OUR VALUED CUSTOMERS

It is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchip

products. To this end, we will continue to improve our publications to better suit your needs. Our publications will be refined and

enhanced as new volumes and updates areintroduced.

If you have any questions or comments regarding this publication, please contact the Marketing Communications Department via

E-mail at docerrorsmicrochip.com or fax the Reader Response Form in the back of this data sheet to (480) 792-4150. We wel-

come your feedback.

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You can determine the version of a data sheet by examining its literature number found on the bottom outside corner of any page.

The last character of the literature number is the version number, (e.g., DS30000000Ais versionA of document DS30000000).

Errata

An errata sheet, describingminor operational differences from the data sheet and recommended workarounds, may exist for current

devices. As device/documentation issues become known to us, we will publish an errata sheet. The errata will specify the revision

of silicon and revision of document to which itapplies.

To determine if an errata sheet exists for a particular device, please check with one of the following:

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When contacting a sales office, please specify which device, revision of silicon and data sheet (include literature number) you are

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Customer Notification System

BM62/64

Preliminary

DS60001403C-Page 4

2017 Microchip Technology Inc.

NOTES:

BM62/64

Preliminary

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DS60001403C-Page 5

1.0 DEVICE OVERVIEW

The BM62 and BM64 Stereo Audio modules are built

around Microchip Technology IS2062 and IS2064

SoCs.

The IS2062/64 SoC integrates the Bluetooth 4.2 dual-

mode radio transceiver, Power Management Unit

(PMU), a crystal and DSP. Users can configure the

BM62/64 module by using the UI tool and DSP tool, a

Windows-based utility.

Figure 1-1 illustrates a typical example of the BM62

module, which is connected to an external audio

amplifier and the MCU.

FIGURE 1-1: SINGLE SPEAKER APPLICATION USING BM62MODULE

Figure 1-2 illustrates a typical example of the Class 1

BM64 module, which is connected to an external MCU

and a DSP/codec.

FIGURE 1-2: SINGLE SPEAKER APPLICATION USING BM64 MODULE

Note: The UI and DSP tools are available for

download from the Microchip web site at:

www.microchip.com/BM62 and

www.microchip.com/BM64.

BM62/64

Preliminary

DS60001403C-Page 6

2017 Microchip Technology Inc.

Figure 1-3 illustrates the Multi-speaker application

using the BM64 module.

FIGURE 1-3: MULTI-SPEAKER APPLICATION USING BM62/64 MODULE

BM62/64

Preliminary

2017 Microchip Technology Inc.

DS60001403C-Page 7

Table 1-1 provides the key features of the BM62/64

module.

TABLE 1-1: BM62/64 KEYFEATURES

Feature

BM62 CLASS 2

BM64 CLASS 2

BM64 CLASS 1

Application

Headset/Speaker

Multi-speaker/Soundbar

Stereo/mono

Stereo

Pin count

Dimensions (mm2)

15 x 29

15 x 32

PCB antenna

Yes

Tx power (typical)

2 dBm

15 dBm

Audio DAC output

2-channel

DAC (single-ended) SNR at 2.8V (dB)

-98

DAC (capless) SNR at 2.8V (dB)

-98

ADC SNR at 2.8V (dB)

-92

I2S digital output

Yes

Analog Auxiliary-Input

Yes

Mono microphone

External audio amplifier interface

Yes

UART

Yes

Full-speed USB 1.1

Yes

LED driver

Internal DC-DC step down regulator

Yes

DC 5V adapter input

Yes

Battery charger (350 mA max)

Yes

ADC for thermal charger protection

Yes

Under voltage protection (UVP)

Yes

GPIO

Button support

EEPROM

Yes

Customized voice prompt

8K Sampling Rate, Stored in EEPROM with approximately

800 bytes/second

Multitone

Yes

DSP functions (audio playback and voice call)

Yes

BLE

Yes

Bluetooth profiles

A2DP

1.3

AVRCP

1.6

HFP

1.6

HSP

1.2

SPP

1.2

BM62/64

Preliminary

DS60001403C-Page 8

2017 Microchip Technology Inc.

Figure 1-4 illustrates the pin diagram of the BM62

module.

FIGURE 1-4: BM62 MODULE PIN DIAGRAM

BM62/64

Preliminary

2017 Microchip Technology Inc.

DS60001403C-Page 9

Table 1-2 provides the pin description of the BM62

module.

TABLE 1-2: BM62 MODULE PIN DESCRIPTION

Pin No

Pin Type

Pin Name

Description

I/O

P0_0

Configurable control or indication pin

(Internally pulled-up, if configured as an input)

•Slide switch detector,active-high

•UART TX_IND, active-low (used by Bluetoothsys-

tem to wakeup the host MCU)

EAN

External address bus negative

System configuration pin along with the P2_0 and

P2_4 pins, used to set the module in any one of the fol-

lowing three modes:

•Application mode (for normaloperation)

•Test mode (to change EEPROMvalues)

•Write Flash mode (to load a new firmware intothe

module), refer to Table 5-1

Flash: Must be pulled-down with 4.7 kOhm to GND

I/O

P3_0

Configurable control or indication pin

(Internally pulled-up, if configured as an input)

Auxiliary input detector, active-low

I/O

P2_0

System configuration pin along with P2_4 and EAN

pins used to set the module in any one of the following

three modes:

•Application mode (for normaloperation)

•Test mode (to change EEPROMvalues)

•Write Flash mode (to load a new firmware intothe

module), refer to Table 5-1

I/O

P1_5

Configurable control or indication pin

(Internally pulled-up, if configured as an input)

•NFC detection pin,active-low

•Out_Ind_1

•Slide switch detector,active-high

I/O

P0_4

Configurable control or indication pin

(Internally pulled-up, if configured as an input)

•NFC detection pin,active-low

•Out_Ind_1

SPKR

Right-channel, analog headphone output

AOHPM

Headphone common mode output/sense input

SPKL

Left-channel, analog headphone output

VDDA

Analog reference voltage. Do not connect, for internal

use only

MIC1_P

MIC1 mono differential analog positive input

MIC1_N

MIC1 mono differential analog negative input

MIC1_BIAS

Electric microphone biasing voltage

AIR

Right-channel, single-ended analog input

AIL

Left-channel, single-ended analog input

RST_N

System Reset (active-low)

Legend: I= Input pin O= Output pin I/O= Input/Output pin P= Power pin

Note: All I/O pins can be configured using the UI tool, a Windowsutility.

BM62/64

Preliminary

DS60001403C-Page 10

2017 Microchip Technology Inc.

TABLE 1-2: BM62 MODULE PIN DESCRIPTION(CONTINUED)

Legend: I= Input pin O= Output pin I/O= Input/Output pin P= Power pin

Note: All I/O pins can be configured using the UI tool, a Windowsutility.

Pin No

Pin Type

Pin Name

Description

No connection

I/O

P0_1

Configurable control or indication pin

(Internally pulled-up, if configured as an input)

•FWD key when Class 2 RF (default),active-low

•Class 1 Tx control signal for external RFTx/Rx

switch, active-high

VDD_IO

I/O positive supply. Do not connect, for internal use

only

ADAP_IN

5V power adapter input, used to charge the battery in

the Li-Ion battery power applications

BAT_IN

Power Supply input.

Voltage range: 3.2V to 4.2V. Source can either be a

Li-Ion battery or any other power rail on the host board

AMB_DET

Analog input for ambient temperature detection

GND

Ground reference

SYS_PWR

System power output derived from ADAP_IN or

BAT_IN. Do not connect, for internal use only

BK_OUT

1.8V buck regulator output. Do not connect to other

devices. For internal use only

MFB

•Multi-Function Button and power-onkey

•UART RX_IND, active-high (used by host MCUto

wakeup the Bluetooth system)

LED1

LED driver 1

LED2

LED driver 2

I/O

P2_4

System configuration pin along with P2_0 and EAN

pins used to set the module in any one of the following

three modes:

•Application mode (for normaloperation)

•Testmode (to change EEPROM values)

•Write Flash mode (to load a new firmware intothe

module), refer to Table 5-1

I/O

P0_2

Configurable control or indication pin

(Internally pulled-up, if configured as an input)

Play/Pause key (default), active-low

I/O

P0_3

Configurable control or indication pin

(Internally pulled-up, if configured as an input)

•REV key (default),active-low

•Buzzer signal output

•Out_Ind_2

•Class 1 Rx Control signal of external RFTx/Rx

switch, active-high

I/O

HCI_TXD

HCI UART data output

I/O

HCI_RXD

HCI UART data input

I/O

P0_5

Configurable control or indication pin

(Internally pulled-up, if configured as an input)

Volume-down key (default), active-low

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