KB64A/B/C(E)
Bluetooth Module
Revision 1.0.1
Mar. 2
nd
, 2018
KB64A/B/C
Bluetooth Module Datasheet
FOR"CERTIFICATION"ONLY
MIPRO Electronics Co., Ltd.
Model number: KB64
KB64A/B/C(E)
Bluetooth Module
Revision History
Revision
Date
Description
V1.0.1
2018/Mar/2
Add external antenna pin of module
V1.0.0
2016/June/8
Initial release
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KB64A/B/C(E)
Bluetooth Module
1. Introduction
The KB64A/B/C Bluetooth module built in a CSRA64110/CSRA64210/CRS64215 Bluetooth chip,
is a perfect solution for consumer audio platform wired and wireless applications, integrates an ultralow power DSP and application processor with embedded flash memory, a high performance
stereo/mono codec, a powerful management subsystem, LED driver in a SoC. The enhanced
Kalimba DSP coprocessor with 80MIPS supports enhanced audio and DSP applications.
The KB64A/B/C Bluetooth module complies with Bluetooth specification version 4.2. It supports
HSP, HFP, A2DP, AVRCP profiles. It integrates RF, Baseband controller, etc. And it also provides
UART interface, USB interface programmable I/O, mono (KB64A)/stereo(KB64B/KB64C) speaker
output (Analog – differential, Digital – PCM, SPDIF & I²S), microphone input, etc. The KB64C is
able to support aptX and aptX Low Latency.
2. Application
Mobile Speakers, earphones, microphones
High quality stereo wireless Headsets
Stereo Headphones
Automotive Hands-Free Kits
Wireless Speaker
TWS Speakers
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KB64A/B/C(E)
Bluetooth Module
Fig 1. Block Diagram of KB64A/B/C series Bluetooth Module
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KB64A/B/C(E)
Bluetooth Module
3. Specification
Model Name
KB64A/B/C
Dimension
26mm x 14mm x 2.0mm
Bluetooth Profile
A2DP v1.3, AVRCP v1.6, HFP v1.6, HSP v1.2, and DI v1.3
Standard
Bluetooth® V4.2 Standard
Frequency
2.402GHz ~ 2.480GHz unlicensed ISM band
RF Channels
79 Channels
Hopping
Adaptive Frequency Hopping (AFH )
Modulation Method
Supports π/4 DQPSK and 8DPSK modulation
Spread Spectrum
Frequency Hopping Spread Spectrum (FHSS)
RF Output Power
Class II
Tx Power
9dBm(typ)
Rx Sensitivity
-90.5dBm
Electrical Characteristics (Absolute Maximum Ratings)
Symbol
Min
Max
Unit
VBAT
-0.4
4.2
V
CHARGE
-0.4
5.5
V
LED(0:1)
-0.4
4.4
V
PIO
-0.3
3.6
V
Recommended Operating Conditions
VBAT
/
4.2
V
CHARGE
/ 5 V
LED(0:1)
/
4.2
V
PIO
/
1.8
V
Operating Temperature
Range
-10
70
Degree of C
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KB64A/B/C(E)
Bluetooth Module
4. Pin Diagram and Dimension
Dimensions of module
BT module dimension: 26mm x 14.0 mm x 2.0 mm
Note: pin 39 only for KB64xE external rf antenna pin version
Fig 1. Pin Definition and dimension of KB64A/B/C
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KB64A/B/C(E)
Bluetooth Module
5. Pin Description
Pin
Pin Name
I/O
Type
Description
1
GND
P Ground connections
2
PIO17
I/O PD Strong
D
Programmable input/output line 17/ UART_CTS (active low)
3
PIO21
I/O PD Weak
D
Programmable input/output line 21
4
PIO00
I/O PU Strong
D
Programmable input/output line 0/ UART_RX / I2C_SCL
5
PIO16
I/O PU Strong
D
Programmable input/output line 16/ UART_RTC
6
CS#
I/O PD Weak
D
SPI_CS#: chip select for SPI, active low (for download)
7
MISO
I/O PD Weak
D
SPI_MISO: SPI data output (for download)
8
SPI_PCM
I PD Weak
D
SPI/PCM select input: 0 = PCM/PIO interface 1= SPI
9
MOSI
I/O PD Weak
D
SPI_MOSI: SPI data input (for download)
10
CLK
I/O PD Weak
D
SPI_CLK: SPI clock ( for download)
11
RESET
I PU Strong
D
Reset if low. Pull low for minimum 5ms to cause a reset
12
LED1
I/O D LED driver
13
LED0
I/O D LED driver
14
MFB
I PD Weak
D
Regulator enable input
15
1.8V
P P +1.8V Output
16
VCHG
Charger input
P
Charger input
17
VBAT
Battery +
P
Battery positive terminal
18
GND
Ground
P
Ground connections
19
GND
Ground
P
Ground connections
20
GND
Ground
P
Ground connections
21
USB_DN
USB_DN
D
USB data minus
22
USB_DP
USB_DP
D
USB data plus with selectable internal 1.5kohm pull-up
resistor
23
PIO07
I/O PD Weak
D
Programmable I/O line 7
24
PIO09
I/O PD Weak
D
Programmable I/O line 9/ UART_CTS (active low)
25
PIO01
I/O PD Strong
D
Programmable I/O line 1
26
PIO08
I/O PU Strong
D
Programmable I/O line 8/ UART_RTS (active low)
27
PIO06
I/O PD Strong
D
Programmable I/O line 6
28
PIO18
I/O PD Weak
D
Programmable I/O line 18
29
MIC_A_N
I A Line or microphone input negative, channel A
30
MIC_A_P
I A Line or microphone input positive, channel A
31
MIC_BIAS
I A Microphone bias
32
I A Line input negative, channel B
33
LINE_BP
I A Line input positive, channel B
34
SPKR_RN
O A Speaker output negative, right, KB64A NC for mono
35
SPKR_RP
O A Speaker output positive, right, KB64A NC for mono
36
SPKR_LN
O A Speaker output negative, left
37
SPKR_LP
O A Speaker output positive, left
38
GND
Ground
G
Ground connections
39
BT_RF
A A External antenna pin (*only available for KB64xE)
Table 5-1 Pin description
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KB64A/B/C(E)
Bluetooth Module
6. Design Note
Except KB64A, the KB64B/C is design for stereo speaker output, SPKR_RN, SPKR_RP,
SPKR_LN, SPKR_LP are output for stereo audio output. If it connects with amplifier, it must be
differential input. Or, it must have a component to balance two signal levels different. Otherwise, it
will cause pop noise. You could refer the reference schematic for more detail. When using KB64A,
please not connect the SPKR_RN, SPKR_RP for mono output SPKR_LN, SPKR_LP only.
For PCB layout, the metal material will affect the antenna of Bluetooth. Please keep the blow area of
antenna as open, without ground or line. Please keep antenna distance with the battery, speaker and
display monitor etc.
The Bluetooth communication is easy depends on environment. For example, The workable distance
sometime shorter when in different environment because signal absorb by the metal or wood as
obstacle.
If your design must put the KB64A/B/C in the metal shell or box, it should connect with higher
performance external antenna for better signal. There are an external antenna option versions for you
to apply the external antenna by BT_RF pin. The option is only for KB64xE version, For example,
KB64AE, KB64BE or KB64CE. The E is mean external antenna version. Please let us know you
application before you put the order.
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KB64A/B/C(E)
Bluetooth Module
7. General Application Schematic
Note: pin 39 only available for KB64xE external RF antenna pin version
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KB64A/B/C(E)
Bluetooth Module
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KB64A/B/C(E)
Bluetooth Module
Note: pin 39 only available for KB64xE external RF antenna pin version
Fig 2. Reference Schematic of KB64A/B/C
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KB64A/B/C(E)
Bluetooth Module
8. DISCLAIMER
The information appearing in this publication is believed to be accurate.
Integrated circuits sold by KIRCHHOFF TECHOLOGY CO., LTD are covered by the warranty and
patent indemnification provisions stipulated in the terms of sale only. KIRCHHOFF TECHOLOGY
CO., LTD makes no warranty, expressed, statutory implied or by description regarding the
information in this publication or regarding the freedom of the described chip(s) from patent
infringement. FURTHERMORE, KIRCHHOFF TECHOLOGY CO., LTD MAKES NO
WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PURPOSE. KIRCHHOFF
TECHOLOGY CO., LTD reserves the right to halt production or alter the specifications and prices
at any time without notice. Accordingly, the reader is cautioned to verify that the data sheets and
other information in this publication are current before placing orders. Products described herein are
intended for use in normal commercial applications. Applications involving unusual environmental
or reliability requirements, e.g. military equipment or medical life support equipment, are
specifically not recommended without additional processing by KIRCHHOFF TECHOLOGY CO.,
LTD for such applications. Please note that application circuits illustrated in this document are for
reference purposes only.
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Federal Communication Commission Interference Statement
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 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.
FCC Caution: To assure continued compliance, any changes or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate this equipment. (Example - use only shielded interface cables when connecting to computer or
peripheral devices).
End Product Labeling
This transmitter module is authorized only for use in devices where the antenna may be installed such that 0.5 cm may be maintained between
the antenna and users. The final end product must be labeled in visible area with the following: “Contains FCC ID: M5X-KB64ABC”
End Product Manual Information
The user manual for end users must include the following information in a prominent location “IMPORTANT NOTE: To comply with FCC RF
exposure compliance requirements, the antenna used for this transmitter must be installed to provide a separation distance of at least 0.5 cm
from all persons and must not be colocated or operating in conjunction with any other antenna or transmitter.” 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.
IMPORTANT NOTE: In the event that these conditions can not be met (for example certain laptop configurations or colocation with another
transmitter), then the FCC authorization is no longer considered valid and the FCC ID can not be used on the final product. In these
circumstances, the OEM integrator will be responsible for reevaluating the end product (including the transmitter) and obtaining a separate FCC
authorization.
This device is intended only for OEM integrators under the following conditions: The antenna must be installed such that 0.5 cm is maintained
between the antenna and users. As long as a condition above is met, further transmitter test will not be required. However, the OEM integrator is
still responsible for testing their end product for any additional compliance requirements required with this module installed (for example,
digital device emissions, PC peripheral requirements, etc.).
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