Cambridge Executive BC127-X Bluetooth module 4.0 dual mode User Manual Manual
Cambridge Executive Limited Bluetooth module 4.0 dual mode Manual
Manual
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BC127
Datasheet
Key Specifications
Bluetooth Certified 4.0 Audio module
Dual Mode: Bluetooth and Bluetooth Low Energy (BLE)
Backwards compatible with 1.1, 2.0, 2.1 + EDR and 3.0
Embedded Bluetooth Protocol Stack
Supports HFP, A2DP, AVRCP, PBAP and SPP
Supports IAP1/IAP2 profiles for connection to iOS devices
Simple UART and GPIO interface for command and control
Can connect to external Codecs with I2S, PCM, SPDIF interface
Small form factor (11.8mm x 18mm x 3.2mm)
Bluetooth, FCC and CE certified
Applications
Wireless Speakers, Docks and Headsets
SmartPhone Controlled Audio Systems
Automotive Infotainment Systems
Medical Devices
High Quality Audio Streaming
Gaming Accessories and MP3 Players
BC127 is a highly flexible, low power, small form
factor Bluetooth Version 4.0 Certified Audio
module. It comes preloaded with BlueCreation
Melody software, and is ideal for developers
who want to quickly and cost effectively
integrate Bluetooth functionality into their
products.
Description
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BC127
Datasheet
General Specifications
Bluetooth
4.0 Baseband
16
MbitFlash
Audio DSP
16 Bit
Stereo
RAM
16 Bit RISC
MCU
2.4
Ghz
Radio
I/O
s
Speaker Left
4 AIOs
5PIOS
UART
USB
PCM/I2S/SP
DIF
Filter
XTAL
BC127
Chip
Anten
na
Speaker
Right
Mic Left
Mic Right
MI
MIC
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BC127
Datasheet
Specifications
Description
Bluetooth Standard
Bluetooth 4.0 Class 2
Interfaces
UART, AIO, GPIO, USB, SPI, Audio In, Mic In, PCM, I2S, SPDIF, I2C
Size
11.8mm x 18mm x 3.2mm
Weight
1.1g
RF Specifications
Specifications
Description
Frequency Band
2,402 MHz to 2,480 MHz
Modulation
8 DPSK, PI/4 DQPSK, GFSK
Maximum Data Rate
3Mbps (typical 1.6Mbps)
Operating Range
20m
RF Sensitivity
0.1% BER at -88dBm
Transmit Power
BER/EDR Class2＜4dBm, BLE＜10dBm
Audio Specifications
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BC127
Datasheet
Specifications
Description
DAC resolution
16 bits
DAC Output Sample Rate
8 KHz to 90 KHz
DAC SNR
96dB
Stereo Separation
-87.7dB
Electric Specifications
Specifications
Description
Supply Voltage
1.8V to 3.7 V DC
Typical Current
20mA (Music streaming)
Typical Current Idle
<5mA (Connectable)
Operating Temperature
-20°C to 70°C
Module Footprint
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BC127
Datasheet
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BC127
Datasheet
Placement Considerations
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BC127
Datasheet
Audio Circuit
The Audio circuit consists of:
2 independent 16-bit high-quality ADC channels:
o Programmable as either microphone or line input
o Programmable as either stereo or dual-mono input
o Multiplexed with 2 of the digital microphone inputs
o Each channel is independently configurable to be either single-ended or fully differential
o Each channel has an analog and digital programmable gain stage
A dual differential class A-B output stage. If a single ended audio output is required, use an external
differential to single-ended converter.
The main features of the interface are:
Stereo and mono analog Input for voice band and audio band
Stereo and mono analog output for voice band and audio band
Support for stereo digital audio bus standards such as I2S
Support for IEC-60958 standard stereo digital audio bus standards, e.g. SPDIF and AES3
Support for PCM including PCM master codecs that require an external system clock
The analog Audio diagram is below:
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BC127
Datasheet
ADC
MIC_RP
MIC_RN
AD
MIC_LP
MIC_LN
DAC
SPK
R_LN
LPF
SPKR_LP
DAC
SPKR_RN
LPF
SPKR_RP
Digit
al
Circu
it
16
16
16
16
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BC127
Datasheet
PIN Description
No
Pin Name
Pin Type
Pin Description
1
GND
GND
Common Ground
2
GND
GND
Common Ground
3
GND
GND
Common Ground
4
GND
GND
Common Ground
5
PIO_6
Bi-directional
Programmable input/output line
6
PIO_7
Bi-directional
Programmable input/output line
7
CAP_SENSE_1
Analog Input
Capacitive Touch Sense Input
8
CAP_SENSE_4
Analog Input
Capacitive Touch Sense Input
9
CAP_SENSE_3
Analog Input
Capacitive Touch Sense Input
10
CAP_SENSE_2
Analog Input
Capacitive Touch Sense Input
11
GND
GND
Common Ground
12
AIO_1
Bi-directional
Analog programmable input/output line
13
SPKR_LN
Audio output
Speaker output negative, left
14
SPKR_LP
Audio output
Speaker output positive, left
15
SPKR_RN
Audio output
Speaker output negative, right
16
SPKR_RP
Audio output
Speaker output positive, right
17
MIC_BIAS_A
Analog input
Microphone bias
18
MIC_RN
Analog input
Microphone input negative, right
19
MIC_RP
Analog input
Microphone input positive, right
20
MIC_LN
Analog input
Microphone input negative, left
21
MIC_LP
Analog input
Microphone input positive, left
22
GND
GND
Common Ground
23
PIO_0
Bi-directional
Programmable input/output line
24
PIO_1
Bi-directional
Programmable input/output line
25
PIO5
Bi-directional
Programmable input/output line
26
PIO_4
Bi-directional
Programmable input/output line
27
GND
GND
Common Ground
28
VREGEN
Analogue
Take High to Enable Switch-Mode Regulator
29
CHG_EXT
Charger input
External battery charger control
30
VCHG
Charger input
Battery Charger Input
31
VBAT_SENSE
Battery sense
Battery Charger Sense
32
VBAT
Battery terminal +ve
Battery Positive
33
VDD_PADS
Supply
Positive Supply input
34
3V3_USB
Supply
Positive Supply input
35
USB_N
Bi-directional
USB data negative
36
USB_P
Bi-directional
USB data positive
37
LED_0
Open drain output
LED Driver
38
LED_1
Open drain output
LED Driver
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BC127
Datasheet
39
LED_2
Open drain output
LED Driver
No
Pin Name
Pin Type
Pin Description
40
UART_CTS
Bi-directional
UART Clear to Send
41
UART_TX
Bi-directional
UART TX Data
42
UART_RX
Bi-directional
UART RX Data
43
UART_RTS
Bi-directional
UART request to send ,active low
44
RST#
Reset Input
Reset if low for more than 5ms
45
SPI_PCM#
Input
Select PCM/SPI
46
PCM_SYNC
Bi-directional
Synchronous data sync
47
PCM_CLK
Bi-directional
Synchronous data clock
48
PCM_OUT
CMOS output
Synchronous data output
49
PCM_IN
CMOS input
Synchronous data input
50
PIO_2
Bi-directional
Programmable input/output line
51
PIO_3
Bi-directional
Programmable input/output line
Notes
PIO_X are bidirectional with weak pull down
Reset Input is with strong pull-up
USB data positive with selectable internal 1.5kΩ pull up resistor
UART are Bidirectional with weak pull up
PCM_OUT, IN, SYNC and CLK can be used as SPI_MISO, MOSI, CSB and CLK respectively. SPI-PCM#
high switches SPI/PCM lines to SPI, low switches to PCM/PIO use
Solder Reflow Profile
Preheat Temperature: 150°C for 100 seconds
Temperature: 220°C for 40 seconds.
Single Pass
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BC127
Datasheet
Regulatory Certifications
BC127 is delivered with FCC, CE, IC and Bluetooth SIG certifications. This allows to integrate the module
in an end product without the need to obtain subsequent and separate approvals from these regulatory
agencies. This is valid in the case no other intentional or un-intentional radiator components are
incorporated into the product. Without these certification, an end product cannot be marketed in the
relevant regions.
United States - FCC
In case no other intentional or un-intentional radiator is incorporated, the BC127's FCC certification allows
users to integrate the module into products without the need to obtain subsequent and separate approval.
The BC127 was approved as "intentional transmitter radio module" by the United States' Federal
Communications Commission (FCC) with accordance to CFR47 Telecommunications Part 15, Subpart C,
section 212. This certification is applicable in all the states in the United States.
The certification allows products to be listed in the NRTL (National Recognized Test Laboratory) as
appointed by OSHA (Occupational Safety and Health Administration).
Labelling
The BC127 has been labelled with its own FCC ID number. In order to the extend the certification granted
to the BC127, its FCC ID number must be displayed on the finished product in which the module is
integrated. The following wording should be used "Contains Transmitter Module FCC ID: SSSBC127-X" or
“Contains FCC ID: SSSBC127-X”.
The user-manual for any product in which the BC127 is integrated in must include the following statements:
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 receiver; Connect the equipment into 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.
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BC127
Datasheet
To satisfy FCC RF Exposure requirements for mobile and base station transmission devices, a separation
distance of 20 cm or more should be maintained between the antenna of this device and persons during
operation. To ensure compliance, operation at closer than this distance is not recommended. The
antenna(s) used for this transmitter must not be co-located or operating in conjunction with any other
antenna or transmitter.
For further information regarding the FCC certification requirements please review the following websites:
Federal Communications Commission (FCC):
http://www.fcc.gov
FCC Office of Engineering and Technology (OET) Laboratory Division Knowledge Database (KDB):
http://apps.fcc.gov/oetcf/kdb/index.cfm
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BC127
Datasheet
Europe - CE and RoHS Marking
In case no other intentional or un-intentional radiator is incorporated, the BC127's CE marking certification
allows users to integrate the module into products without the need to obtain subsequent and separate CE
approval.
The BC127 has been tested and granted approval as R&TTE Directive product under the 1999/5/EC
Essential Requirements for Health and Safety (Article (3.1(a)), Electromagnetic Compatibility, (EMC)
(Article 3.1(b)), and Radio (Article 3.2). A Notified Body Opinion has been issued.
The BC127 has also been tested and granted approval under the directive on the restriction of the use of
certain hazardous substances in electrical and electronic equipment 2002/95/EC (commonly referred to as
the Restriction of Hazardous Substances Directive or RoHS). This certification ensures the module is
environmental safe and free from hazardous substances (including Lead).
Both certifications are applicable in all the 27 countries of the European Economic Area.
Labelling and Documentation
Products complying with all relevant essential requirements shall bear the CE conformity marking
accompanied by the identification number BC127
The RoHS certification does not dictate any specific product labelling. However, we recommend marking
the product with a "RoHS Compliant" statement.
R&TTE Directive requires a manufacturer to establish technical documentation. It must be kept by the
manufacturer or his authorised representative in the EU for at least 10 years after the last product has been
manufactured. The documentation must cover:
a general description of the product,
conceptual design and manufacturing drawings and schemes of components, sub-assemblies,
circuits and other design documentation,
descriptions and explanations necessary for the understanding of said drawings and schemes and the
operation of the product,
a list of the standards referred to in Article 5, applied in full or in part, and descriptions and
explanations of the solutions adopted to meet the essential requirements of the Directive where such
standards
results of design calculations made, examinations carried out, etc.,
test reports.
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BC127
Datasheet
Test reports must include the following table containing the BC127 tests:
Certification
Standards
Article
Laboratory
Report
Number
Date
Safety
EN 60950-
1:2006+A11:2009+A1:2010+A12:2011
(3.1(a))
Health
EN 62479 ：2010
EMC
EN 301 489-1 V1.9.2 (2011-09); EN
301 489-17 V2.1.1 (2009-05)
(3.1(b))
Radio
EN 300 328 V1.7.1 (2006-10)
(3.2)
For further labelling and CE marking requirements please review the R&TTE Compliance Association
Technical Guidance: http://rtteca.com/
For further information regarding the R&TTE certification requirements please review the following websites:
Radio and Telecommunications Terminal Equipment (R&TTE):
http://ec.europa.eu/enterprise/rtte/index_en.htm
European Conference of Postal and Telecommunications Administrations (CEPT):
http://www.cept.org
European Telecommunications Standards Institute (ETSI):
http://www.etsi.org
European Radio Communications Office (ERO):
http://www.ero.dk
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BC127
Datasheet
Canada - IC
In case no other intentional or un-intentional radiator is incorporated, the BC127's IC certification allows
users to integrate the module into products without the need to obtain subsequent and separate approval.
The BC127 has been tested and granted approval under Industry Canada (IC) Radio Standards
Specification (RSS) RSS-210, RSSGen and ICES-003. This certification is applicable in Canada.
Labelling and Documentation
The BC127 has been labelled with its own IC ID number. In order to the extend the certification granted to
the BC127, its CE ID number must be displayed on the finished product in which the module is integrated.
The following wording should be used "Contains Transmitter Module IC"
The user-manual for any product in which the BC127 is integrated in must include the following statements:
This device complies with Industry Canada license exempt RSS standard(s). Operation is subject to the
following two conditions: (1) this device may not cause interference, and (2) this device must accept any
interference, including interference that may cause undesired operation of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de
licence. L'exploitation est autorisée aux deux conditions suivantes: (1) l'appareil ne doit pas produire de
brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le
brouillage est susceptible d'en compromettre le fonctionnement.
Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and
maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio
interference to other users, the antenna type and its gain should be so chosen that the equivalent
isotropically radiated power (e.i.r.p.) is not more than that necessary for successful communication.
Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec
une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada.
Dans le but de réduire les risques de brouillage radioélectrique à l'intention des autres utilisateurs, il faut
choisir le type d'antenne et son gain de sorte que la puissance isotrope rayonnée équivalente (p.i.r.e.) ne
dépasse pas l'intensité nécessaire à l'établissement d'une communication satisfaisante
For further labelling and IC marking requirements please review the Industry Canada website:
http://www.ic.gc.ca/
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BC127
Datasheet
Bluetooth Qualification Program (BQP)
In case no other non-certified Bluetooth components are incorporated, the BC127's BQP
marking certification allows users to integrate the module into products without the need to obtain
subsequent and separate approval.
The BC127 has been approved by the Bluetooth Qualification Body (BQB) to use the Bluetooth trademark
and to offer official Bluetooth functionality. The approval according to the V4.0B Bluetooth specification
confirms that the module complies with the Bluetooth specification and will successfully operate with other
products supporting the same profile. BQP certification also ensures that the module has gone through
safety assessment. This certification was granted through a combination of product performance testing
and interoperability testing. This certification applies globally.
Labelling
Products complying with all relevant requirements are allowed to bear the official Bluetooth logo
For further information regarding the BQP certification requirements please review the following websites:
Bluetooth Special Interest Group:
https://www.bluetooth.org/apps/content/
Notes:
Changes or modifications that are made to the module circuitry can hinder the certification
Installers must comply with all of the instructions provided by the certification agency, which indicate
installation and/or operating conditions necessary for compliance
It is important to note that the finished product is required to comply with all applicable authorizations
regulations and requirement that is not associated with the BC127 module, including non-intentional
transmitting modules and other intentionally transmitting modules.
The previous section represents BlueCreation interpretation of the salient issues of the certifications.
For full details of the certification please refer to the local agencies' websites. Where there is any
difference between this document and the local agencies' website, the subsequent should be followed.
At the time of writing this document FCC, CE and BQP certification were still processed by the
relevant authorities.
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BC127
Datasheet
Ordering Information
Part number BC127
Order number
Description
BC127
Class2 Bluetooth 4.0 Module with integrated chip Antenna
BC127-A
Class2 Bluetooth 4.0 Module with integrated Antenna and connection to iOS
BC127-DEVKIT-001
Development kit for the BC127 module
BC127-DEVKIT-A-001
Development kit for the BC127-AI module
General Notes
BlueCreation's products are not authorised for use in life-support or safety-critical applications. Use in such
applications is done at the sole discretion of the customer. BlueCreation will not warrant the use of its
devices in such applications.
While every care has been taken to ensure the accuracy of the contents of this document, BlueCreation
cannot accept responsibility for any errors. BlueCreation reserves the right to make modifications,
corrections and any other changes to its products at any time. Customers should obtain the latest
information before placing orders.
BlueCreation, other products, services and names used in this document may have been trademarked by
their respective owners. The publication of this information does not imply that any license is granted under
any patent or other rights owned by BlueCreation.
Refer to www.blue-creation.com for more information. BlueCreation® is a trading name for Cambridge
Executive Limited.
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BC127
Datasheet
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BC127
Datasheet