BTMC6R24 BUDDIES | Alldatasheet
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Bluetooth Module Data Sheet Document Type: Bluetooth Module Datasheet Document Version: V1.03 Release Date: February 16,2016 Copyright 2016 by Buddies -Technology Limited. All R ights Reserved. Reproduction of this document, in part of in whole, by any means is prohibited without written permission from Buddies Technology Limited. The i nformation contained herein is believed to be accurate as of the date of publicat i on. However, Buddeis is not liable fo r an y damage s, including indirect or consequential from the use of software this document represents, or an y r eliance of th e accuracy of th is do cument. Buddies reserves the right to change the contents of this document at any time without notice. This document contains proprietary confidential trade secrets and may be subject to addition al restrictions contained in the licensing agreement under which this document was obtained. http://www.buddies-tech.com BTMC6R24 DATASHEET
Revision History
Date Version Description Author 2015-04-20 V1.0 n First Release 2015-09-04 V1.01 n Add reflow profile 2015-09-25 V1.02 n Add reference schematic 2016-02-16 V1.03 n Update module dimension http://www.buddies-tech.com BTMC6R24 DATASHEET
http://www.buddies-tech.com BTMC6R24 DATASHEET
- INTRODUCTION The BTMC6R24 Bluetooth® module is a perfect solution for enhanced audio applications, such as stereo headphones and speakers. It can be connected with any Bluetooth® devices in an operating range. It is slim and light so the designers can have better flexibilities for the product shapes. The BTMC6R24 Bluetooth® module complies with Bluetooth® specifi cation version 4.2. It supports HSP, HFP, A2DP, AVRCP profiles,and TureWireless Stereo(TWS) application . It integrates RF Baseband co ntroller, antenna, … etc. and provi de UART interface, programmable I/O, stereo speaker output, microphone input,… etc. The detail information of BTMC6R24 Bluetooth ® module is presented in this document below.
1.1 Block Diagram
Note: SPI & UART only for production test Filter CSRA64215 SPI Flash Crystal PIOs Speaker Antenna MIC SPI AIOs VDD UART Line-in USB Audio http://www.buddies-tech.com BTMC6R24 DATASHEET
1.2 Features
ü Small overall dimension ( 8M/16M: 21 * 13.5 * 2.85mm; 4M:21 * 13.5 * 2.5mm ) ü Bluetooth® V4.2 ü Class 1,Class 2, Class 3 support ü Physical connection as SMD type ü High quality stereo audio ü Music Enhancements: SBC,aptX / aptX-LL,AAC decoder, Configurable EQ,Stereo Widening(S3D) ü TrueWireless Stereo (TWS) ü Support audio analog(line-out) and digital(I2S) output ü Support SCMS-T ü Support HSP(v1.2), HFP(v1.6), A2DP(v1.3), AVRCP(v1.5) profiles ü CSR's latest cVc technology for narrowband and wideband voice connections including wind noise reduction ü Multipoint support for A2DP connection to 2 A2DP sources for music playback ü Based on CSR chip set CSRA64215 ü RoHS Compliant ü No radio signal interference, support for 802.11 co-existence ※ Some features are optional for customization on demand. http://www.buddies-tech.com BTMC6R24 DATASHEET
1.3 Application
ü High Quality Stereo Bluetooth Headphones ü Bluetooth Speakers http://www.buddies-tech.com BTMC6R24 DATASHEET
- GENERAL SPECIFICATION Bluetooth Specification Chip Set CSRA64215 (ROM) Module ID BTMC6R24 BT Standard Bluetooth® V4.2 RF TX Output Power 4dBm(typ),8dBm(max) Sensitivity -86dBm@0.1%BER Frequency Band 2.402GHz~2.480GHz ISM Band Modulation Type GFSK,π/4 DQPSK,8DPSK Channel No. 79(for Classic),40(for BLE) Baseband Crystal OSC 26MHz Hopping 1600hops/sec, 1MHz channel space RF Input Impedance 50 ohms Environmental RoHS Compliant http://www.buddies-tech.com BTMC6R24 DATASHEET
- PHYSICAL CHARACTERISTIC http://www.buddies-tech.com BTMC6R24 DATASHEET
http://www.buddies-tech.com BTMC6R24 DATASHEET
3.1 Pin Description
Pin# Pin Name Pad Type Description
1 GND Ground Ground
2 AIO_0 Analogue input/output Analogue programmable input/ output line
3 NC NC NC
4 NC NC NC
5 UART_RTS Bidirectional with strong pull-up
UART request to send active low Alternative function: ■PIO_16Programmable input/output line
6 UART_CTS Bidirectional with strong pull-up
UART clear to send active low Alternative function: ■PIO_17Programmable input/output line
7 NC NC NC
8 NC NC NC
9 NC NC NC
10 NC NC NC
11 NC NC NC
12 SPI_EN Input with weak pull-down
SPI/PCM# select input ■0=PCM/PIO interface ■1=SPI
13 GND Ground Ground
14 SPI_MISO/PCM1_OUT
Bidirectional with weak pull- down SPI data output Alternative function: ■PIO_3: Programmable input/output line ■PCM1_OUT: PCM1 synchronous data output ■I2S1_SD_OUT: I2S1 synchronous data output
15 SPI_MOSI/PCM1_IN
Bidirectional with weak pull- down SPI data input Alternative function: ■PIO_2: Programmable input/output line ■PCM1_IN: PCM1 synchronous data input ■I2S1_SD_IN:I2S1 synchronous data input
16 SPI_CLK/PCM1_CLK Bidirectional with weak pull-
Alternative function: ■PIO_5: Programmable input/output line ■PCM1_CLK: PCM1 synchronous data clock http://www.buddies-tech.com BTMC6R24 DATASHEET
■I2S1_CLK: I2S1 synchronous data clock
17 SPI_CSB /PCM1_SNYC Bidirectional with weak pull-
Chip select for SPI,active low Alternative function: ■PIO_4: Programmable input/output line ■PCM1_SYNC: PCM1 synchronous data sync ■I2S1_WS: I2S1 word select
18 GND Ground Ground
19 GND Ground Ground
20 BT_Reset Input with strong pull-up Active LOW>5ms reset
21 GND Ground Ground
22 LED_1 Bidirectional
Alternative function:programmable output PIO(30)
23 LED_0 Bidirectional
Alternative function:programmable output PIO(29)
24 PWR CMOS Input
Can also be sensed as an input Regulator enable and multifunction button.A High input(tolerant to VBAT)enables the on- chip regulators,which can then be latched on internally and the button used as a multifunction input
25 GND Ground Ground
26 VBUS Charge input Charge input
Typically connected charger
27 CHG_EXT Exernal battery charger control
External battery charger transistor base control when using external charger boost.Otherwise leave unconnected
28 VBAT_SENSE CMOS Input Battery charger sense input
Connect directly to the battery positive pin
29 VBAT CMOS Input Positive supply for BT Module,or battery
30 GND Ground Ground
31 1V8 Power output Auxiliary regulator output (1.8V out)
32 VDD_PADS Power input Positive supply input for input/output ports
33 3V3_USB Power output 3.3V bypass linear regulator output http://www.buddies-tech.com BTMC6R24 DATASHEET
34 GND Ground Ground
35 USB_N Bi-directional USB data minus
36 USB_P Bi-directional USB data plus with selectable internal
1.5kΩ pull-up resistor
37 GND Ground Ground
38 PIO_9/PCM2_CLK Bi-directional with programmable
strength internal pull-up/down Programmable input/output line ■I2S2_CLK: I2S2 synchronous data clock
39 PIO_0 Bi-directional with programmable
strength internal pull-up/down Programmable input/output line
40 PIO_1 Bi-directional with programmable
strength internal pull-up/down Programmable input/output line
41 PIO_8/PCM2_IN Bi-directional with programmable
strength internal pull-up/down Programmable input/output line ■I2S2_SD_IN:I2S2 synchronous data input
42 PIO_7/PCM2_SYNC Bi-directional with programmable
strength internal pull-up/down Programmable input/output line ■I2S2_WS: I2S2 word select
43 PIO_6/PCM2_OUT Bi-directional with programmable
strength internal pull-up/down Programmable input/output line ■I2S2_SD_OUT: I2S2 synchronous data output
44 PIO_21 Bi-directional with programmable
strength internal pull-up/down Programmable input/output line
45 PIO_18 Bi-directional with programmable
strength internal pull-up/down Programmable input/output line
46 LED_2 Bidirectional
Alternative function:programmable output PIO(31)
47 GND Ground Digital Ground
48 MIC_BIAS Analogue Microphone bias
49 LINE/MIC_AN Analogue in Microphone input negative, channel A
50 LINE/MIC_AP Analogue in Microphone input positive, channel A
51 LINE_BN Analogue in Line-in negative, channel B
52 LINE_BP Analogue in Line-in positive, channel B
53 AGND Ground Analog Ground
54 SPK_RN Analogue OUT Speaker output negative, right
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55 SPK_RP Analogue OUT Speaker output positive, right
56 SPK_LN Analogue OUT Speaker output negative, left
57 SPK_LP Analogue OUT Speaker output positive, left
58 GND Ground Digital Ground
59 RF_IN RF Bluetooth 50Ω transmitter output/receive input
60 GND Ground Digital Ground
- REFERENCE SCHEMATIC Next page for detail. http://www.buddies-tech.com BTMC6R24 DATASHEET
A B C D 4321 D C B A +3V3 VBAT SW1 PWR ON/OFF/PAIR SW2 VOL+ SW3 VOL- SW4 FORWARD R3 10K R5 10K R2 10K R1 10K LED1 RED R6 470R R7 470RLED2 BLUE LED_0 LED_1 PWR PIO_18 PIO_7 PIO_8 KEY&LED LED3 BLUE R8 470R LED_2 SW5 BACKWARD R4 10K PIO_21 C2 NC C1 NC ANT 1uF SPI_MISO SPI_CSB SPI_CLK SPI_MOSI TP1MOSI TP2CLK TP3CSB TP4MISO G S D FDV303N 9K1 TH1 10K 100nF 1V8 PIO_0 AIO_0 Temperature sensor SPI debug interface SPI_MISO SPI_CSB SPI_CLK SPI_MOSI SPI_EN BT_Reset LED_1 LED_0 GND GND PWR USB_N USB_P PIO_21 PIO_18 LED_2 AGND AIO_0 GND GND GND GND GND GND GND GND JACK_DET_PIO PIO_7 MIC_BIAS LINE/MIC_AN LINE/MIC_AP LINE_BP SPKR_LN SPKR_LP SPI_EN TP5SPI_EN 100nF 2u2 VBAT BAT 3.3V-4.2V VCC 1 D- 2 D+ 3 ID 4 GND 5 GND6 GND 7 MICRO-USB USB_P USB_N USB charger C5100nF +5V C22100nF C21100nF C17 15PF R10 2K2 L2 15nH MIC_A -42dB LINE/MIC_AP LINE/MIC_AN MIC_BIAS C18 100nF C19 100nF C20 2.2uF C23 2.2uF C12 2.2uF R12 100K R11 1K R14 4K7 R13 4K7 R16 NP R15 NP C13 33pF C14 33pF B2 1 GND 2 B1 3A4 VCC5 74LVC1G3157DCKRE4 B2 1 GND 2 B1 3A4 VCC5 74LVC1G3157DCKRE4 Line Inputs Jack Line_L Line_RLINE_BP JACK_DET_PIO LINE/MIC_PIO S--->L--->B1 S--->H--->B2 Line Input/Microphone Auto Switch Circuit JACK_DET_PIO--->L--->open Line in 4.7uF Stereo Audio Output (Differentially Output) PIO_8 LINE/MIC_PIO C11 2.2uF C10 2.2uF PIO_0 GND1 AIO_02 NC4 NC3 UART_RTS/PIO_165 UART_CTS/PIO_176 NC7 NC8 NC9 NC10 NC11 SPI_EN12 GND13 SPI_MISO/PCM1_OUT14 SPI_MOSI/PCM1_IN15 SPI_CLK/PCM1_CLK16 SPI_CSB/PCM1_SYNC17 GND18 GND19 BT_Reset20 GND21 LED_122 LED_023 PWR24 GND25 VBUS26 CHG_EXT27 VBAT_SENSE28 VBAT29 GND30 +1V8_OUT 31 VDD_PADS 32 +3V3_OUT 33 GND 34 USB_N 35 USB_P 36 PIO_9/PCM2_CLK 38 PIO_0 39 PIO_1 40 PIO_8/PCM2_IN 41 PIO_7/PCM2_SYNC 42 GND 37 PIO_6/PCM2_OUT 43 PIO_21 44 PIO_18 45 LED_2 46 GND 47 MIC_BIAS 48 LINE/MIC_AN 49 LINE/MIC_AP 50 LINE_BN 51 LINE_BP 52 AGND 53 SPK R_RN/NC 54 SPK R_RP/NC 55 SPK R_LN 56 SPK R_LP 57 GND 58 RF 59 GND 60 BTMC6R24(CSRA64215) SPKR_RP SPKR_RN VDD1 GND2 CE/3 4 4 VCC 5 SGM2019-3V3 C28 2u2 C25 10nF C26 10nF C24 2u2 +3V3C27 10nF VBAT R19 1K +1V8 Power R18 NC R17 0R +3V3 +3V3 +1V8
5.PHYSICAL INTERFACE
5.1 Programmable I/O ports
n The module provide 11 lines of programmable bidirectional I/O,Can configurate to different function by firmware.
5.2 Analogue I/O ports
n The module has a analogue port AIO_0,typically connections to thermistor for battery pack temperature measurements during charger control.
5.3 LED Driver
n The module provide 3 synchronized PWM LED driver for RGB leds.Can controlled by firmware.The driver are open-drain outputs,and the LEDs must pull up to positive supply. Refer to the section 4.1
5.4 Audio Interfaces
Audio interface as following features: Stereo or dual mono analogue audio output through SPK_LP,SPK_LN,SPK_RP,SPK_RN. n Stereo and mono analogue input through LINE/MIC_AN,LINE/MIC_AP,LINE_BN,LINE_BP. The module is designed for different output,if a single-ended audio output is required,use an external differential to single-ended converter.
5.5 Microphone input
The module contains an independent low-noise microphone bias generator.The microphone bias generator is recommended for biasing electret condenser microphone. section 4.1 is a basing circuit for microphone with a sensitivity between -40~-60db.
5.6 Reset
n The module is reset from several sources: Reset# pin Power on reset Software configured watch-dog The Reset pin is an active low reset and is internally filtered using the internal low frequency clock oscillator.Recommended the low period >10ms. RAM data not available after cold reset. http://www.buddies-tech.com BTMC6R24 DATASHEET
shows pin states of module on reset Pin name I/O type Reset PIO_0 Digital Bidirectional Strong pull up PIO_18 D igital B idi rectional Strong pull down PIO_1 Digital Bidirectional Strong pull up PIO_21 D ig ital Bidirectional Weak pull down PIO_6 Digital Bidirectional Strong pull do wn PIO_7 Digital Bidirectional Strong pull down PIO_8 Digital Bidirectional Strong pull up PIO_9 Digital Bidirectional Strong pull down
5.7 RF Interface
The module integrates a balun filter. A 50ohms load is needed.
5.8 Batter charger
5.8.1 battery charger hardware operating modes The battery charger hardware is controlled by VM ,it has 5 modes: Disabled Trickle charger Fast charger Standby:fully charged or float charge Error:charging input voltage,VCHG is too low.
5.8.2 External charge mode
The external mode is for charging higher capacity batteries using an external bass device.The current is controlled by sinking a varying current into the CHG_EXT pin, and the current is determined by measuring the voltage dorp across a resistor.The max current up to 700mA.
5.9 Serial Interfaces
5.9.1 UART
This is a standard UART interface for communicating with other serial devices. The UART interface provides a simple mechanism for communicating with other serial devices using the RS232 protocol. When the module is connec ted to another digital device,UART_RX and U ART_TX transfer data betwee n the t wo devices. The remaining two signals, UART_CTS and UART_RTS, can be used to implement RS 232 hardware flow c ontrol where both are active low indicators. Note: The serial port interface(UART)can be used for system debugging. Don’t support to use command set for profile function application by UART,such as HFP/A2DP/ AVRCP and so on . These prof iles function application can be con trolled only by PIO, such as pairing/connect/answer/play/pause/next/previous function application and so on. http://www.buddies-tech.com BTMC6R24 DATASHEET
5.9.2 SPI
The synchronous serial port interface (SPI) can be used for system debugging. It can also be used for in-system programming for the flash memory within the module. SPI interface uses the SPI_MOSI, SPI_MISO, SPI_CSB and SPI_CLK pins. Testing points for the SPI interface are reserved on board in case that the firmware shall be updated during manufacture. The module operates as a slave and thus SPI_MISO is an output of the module. SPI_MISO is not in high-impedance state when SPI_CSB is pulled high. Instead, the module outputs 0 if the processor is running and 1 if it is stopped. Thus the module should NOT be connected in a multi-slave arrangement by simple parallel connection of slave SPI_MISO lines. http://www.buddies-tech.com BTMC6R24 DATASHEET
6.ELECTRICAL CHARACTERISTIC
6.1 Absolute Maximum Ratings
6.2 Recommended Operating Conditions
6.3 PIO recommended operating conditions
Input Voltage Min Typ Max Unit PIOx 1.70 1.80 3.60 V AIOx 1.30 1.35 1.95 V LED[0:2] 1.10 3.70 4.30 V Output Min Typ Max Unit PIOx 1.70 1.80 3.60 V LED[0:2] 0 0 V Rating Min Typ Max Unit Storage temperature range -40 105 °C Supply Voltage VBAT -0.4 4.40 V VBUS -0.4 5.75 V VBAT_SENSE -0.4 4.40 V PWR 0 4.40 V Rating Min Typ Max Unit Operating temperature range -20 70 °C Supply Voltage VBAT 2.80 3.70 4.25 V VBUS 4.75 5.00 5.75 V VBAT_SENSE 0 3.70 4.25 V PWR 0 3.70 4.25 V http://www.buddies-tech.com BTMC6R24 DATASHEET
Output current with 3.3v supply Min Typ Max Unit PIOx(Total output) 5.0 mA Current with 3.3V Input and Tristate Min Typ Max Unit Strong pull up -150 -40 -10 uA Strong pull down 10 40 150 uA Weak pull up -5 -1.0 -0.33 uA Weak pull down 0.33 1.0 5.0 uA
6.4 Battery charger
Battery Charger Min Typ Max Unit Input voltage, VCHG (a) 4.75 / 3.10 5.00 5.75 V Trickle Charge Mode Min Typ Max Unit Charge current Itrickle , as percentage of fast charge current 8 10 12 % Vfast rising threshold - 2.9 - V Vfast rising threshold trim step size - 0.1 - V Vfast falling threshold - 2.8 - V Fast Charge Mode Min Typ Max Unit Max charge setting , headroom(a) > 0.55V 194 200 206 mA Charge current during constant Current mode, Ifast Min charge setting, headroom(a) > 0.55V 10 mA Reduced headroom charge current, As a percentage of Ifast Headroom(a)<0.55V 50 - 100 % charge current step size - 10 - mA Vfloat threshold, calibrated 4.16 4.20 4.24 V Charge termination current I term, as percentage of I fast 7 10 20 % Standby Mode Min Typ Max Unit Voltage hysteresis on VBAT, Vhyst 100 - 150 mV http://www.buddies-tech.com BTMC6R24 DATASHEET
Error Charge Mode Min Typ Max Unit Headroom (a) error falling threshold 50 mV (a) Headroom=VCHG-VBAT External Charge Mode Min Typ Max Unit Fast charge current, Ifast 200 - 700 mA Control current into CHG_EXT 0 - 20 mA Voltage on CHG_EXT 0 5.75 V External pass device hfe - 50 - - Sense voltage, between VBAT_SENSE and VBAT at maximum current 195 200 205 mV
6.5 RF characteristics
6.6 Power consumption
Operating Condition Average Current Unit SCO connection with pocket type HV3 11.4 mA mAeSCO connection with pocket type EV3 11.6 mA eSCO connection with pocket type 2EV3 10.2 mA Slave Stereo with high quality SBC decode 13.6 mA SCO connection with pocket type HV3 10.4 mA eSCO connection with pocket type EV3 11.3 mA eSCO connection with pocket type 2EV3 9.1 mA Master Stereo with high quality SBC decode 14.7 mA Receiver Average Bluetooth Spec Transmitter Average Bluetooth Spec Unit 2402MHz -85 2402MHz 2.8 dBm 2441MHz -86 2441MHz 2.6 dBm Sensitivity at 0.1 Ber 2480MHz -86 <=-70 Output Power 2480MHz 2.6 -6~+4 dBm http://www.buddies-tech.com BTMC6R24 DATASHEET
- REFLOW PROFILE. Reflow number of times: ≤ 2times http://www.buddies-tech.com BTMC6R24 DATASHEET
- PACKAGING INFORMATION 1. BLUETOOTH® Module: BTMC6R24 http://www.buddies-tech.com BTMC6R24 DATASHEET
1.Label Format(Optional) a. High Temperature Label Recommend Optional Up Side: Data Matrix(BDA) Up Side: Data Matrix(BDA) Down Side: BDA(the last 6 bit) Down Side: BDA(the last 6 bit) Label Format as below: Label Format as below: Label Dimension: 7.3mm * 7.3m m Label Dimension:12mm * 10mm(or other) * HD Scanner used for scanning label data matrix * If require any other label format,must be confirmed with customer 2.Packing(Optional) a.Tray vacuum Tray Dimension: 40mm * 35mm b. Braid vacuum http://www.buddies-tech.com BTMC6R24 DATASHEET
3.Packing box(Optional) a.Large packing box b.Small packing box * If require any other packing,must be confirmed with customer http://www.buddies-tech.com BTMC6R24 DATASHEET