Shi Xinzhongxin Technology F-6688 Bluetooth Module User Manual www i enet com

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BK8000L Bluetooth Audio SoC
User Guide
F-6688
Brand:XINZHONGXIN
FCC ID:2AG94F-6688
Shenzhenshi Xinzhongxin Technology Co., Ltd.
Page 1 of 14
BK8000L Datasheet
Contents
1.
General Description......................................................................................................................4
1.1.
1.2.
Features ................................................................................................................................4
Applications .........................................................................................................................4
2.
Pin Definition................................................................................................................................5
3.
Functional Description .................................................................................................................7
3.1.
3.2.
3.3.
3.4.
3.5.
3.6.
3.7.
3.8.
3.9.
3.10.
4.
GPIO.....................................................................................................................................7
PWM Timer and Watch Dog Timer...................................................................................8
Power Management.............................................................................................................8
MCU.....................................................................................................................................8
I2C and UART Interface.....................................................................................................8
FM Receiver Control Interface ...........................................................................................8
FLASH Access Interface ....................................................................................................9
SPI ........................................................................................................................................9
SAR ADC and LED ............................................................................................................9
Audio Peripheral..................................................................................................................9
Electrical Characteristics............................................................................................................10
4.1.
4.2.
4.3.
4.4.
4.5.
4.6.
4.7.
4.8.
4.9.
Absolute Maximum Ratings .............................................................................................10
Recommended Operating Conditions ..............................................................................10
System LDO ......................................................................................................................10
Analog LDO/BUCK..........................................................................................................10
Digital LDO/BUCK ..........................................................................................................11
USB LDO...........................................................................................................................11
Typical Power Consumption ............................................................................................11
RF Characteristics .............................................................................................................11
Audio Characteristics ........................................................................................................12
5.
Application Schematic ...............................................................................................................12
6.
About the Qualification..............................................................................................................12
7.
Package Information...................................................................................................................13
8.
Ordering Information .................................................................................................................14
Page 2 of 14
Low Power Bluetooth Audio SoC
1.
General Description
The BK8000L chip is a highly integrated
single-chip Bluetooth audio device. It
integrates the high-performance transceiver,
rich features baseband processor, and
Bluetooth audio profile. The BK8000L cache
based architecture enables it is fully
programmable with any application, that it
may be used for control and multimedia
hybrid application. The internal dual stereo
ADC converts the stereo line in input to
digital audio that enables the line in use the
digital equalizer. Hardware equalizer and
accelerator offload the MCU, and make it
suitable for low power headset application.
Bluetooth 2.1+EDR compliant
-92 dBm sensitivity for 2 Mbps mode
and 5 dBm transmit power
A2DP v1.2, AVRCP v1.0 and HFP v1.5
profile
Integrated 96 dB SNR stereo ADC and
stereo DAC
Five bands hardware equalizer
Digital equalizer for stereo line in
Hardware accelerator for low power
Full duplex hands-free speakerphone
Up to 250 mA charge controller
1.2.
1.1.
Applications
Features
Operation voltage from 2.8 V to 4.2 V
Audio
DAC
Audio
ADC
MCU
Audio(inc. DTMF)
with
JTAG
Reset
DMA
Bluetooth
Transceiver
HWA
ROSC
Power
Manage
ment
Bluetooth stereo speaker
Bluetooth stereo headset
Bluetooth control and multimedia hybrid
I2C/
UART
BIST
16 KB
I-Cache
LED
ADC
80 KB
Data
RAM
Watch
Dog
PMU
POR
DPLL
Switch
Regulator
XTAL
I2C
PWM
FLASH
Controller
SPI
Page 3 of 14
BK8000L Datasheet
2.
Pin Definition
It provides maximum QFN6x6 48-pins package for wireless audio application.
48
47
46
45
44
43
42
41
40
39
38
37
RSTN
36
VCC3SYS
TSTEN
35
VCC4BAT
RFP_BT
34
VCC5USB
TDI(GPIO20)
33 AUDIORN
GPIO11
32 AUDIORP
VDD12
GND PAD
GPIO0
BK8000L
BK8006
30
AUDIOLN
GPIO1
QFN 6*6 48-Pin
29
VCCAUD
GPIO2
28
VREF1AUD
GPIO3
27 V2MICBIAS
GPIO4
26 MICINP
GPIO5
25
13
14
15
16
17
18
19
31 AUDIOLP
20
21
22
23
MICINN
24
Table 1 Pin Description of 48Pin Package
PIN
Name
Pin Function
Description
RSTN
TSTEN
RFP_BT
TDI
GPIO11
VDD12
GPIO0
GPIO1
GPIO2
Digital I/O
Digital I/O
RF port
Digital I/O
Digital I/O
Power
Digital I/O
Digital I/O
Digital I/O
Active low reset
Test enable, high enable chip in test mode
2.4 GHz antenna port
JTAG TDI, GPIO20
General I/O
1.2 V LDO output
GPIO
GPIO
GPIO
Page 4 of 14
Low Power Bluetooth Audio SoC
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
GPIO3
GPIO4
GPIO5
CSN_FLA
WP_FLA
SI_FLA
SO_FLA
SCK_FLA
HOLD_FLA
VCC3IO
SWD
VSYS3V8D
VBUCKD
LINR
LINL
MICINN
MICINP
V2MICBIAS
VERF1AUD
VCCAUD
AUDIOLN
AUDIOLP
AUDIORP
AUDIORN
VCC5USB
VCC4BAT
VCC3SYS
SWA
VCC3BUCKA
VBUCKA
VADC
NC
VCCBT
VCC3XTAL
XO
XI
TMS
TCK
TDO
Digital I/O
Digital I/O
Digital I/O
Digital I/O
Digital I/O
Digital I/O
Digital I/O
Digital I/O
Digital I/O
Power
Analog
Power
Power
Analog
Analog
Analog
Analog
Analog
Analog
Power supply
Analog
Analog
Analog
Analog
Power
Power
Power
Analog
Power
Power
Analog
NC
Power
Power
Analog
Analog
Digital I/O
Digital I/O
Digital I/O
GPIO
GPIO
GPIO
FLASH CSN
FLASH WP
FLASH SI
FLASH SO
FLASH SCK
FLASH HOLD
3.3 V LDO output
Switch regulator port for digital
Input Power 3.6V
Switch regulator output for digital
Line in right channel
Line in left channel
Microphone input negative
Microphone input positive
Audio bias voltage output
Audio reference output,1.2V
Audio power supply input, 1.8V~3.6
Audio left channel output negative
Audio left channel output positive
Audio right channel output negative
Audio right channel output positive
USB power input
Battery input
3.6V system LDO output
Switch regulator port for analog
Switch regulator input for analog
Switch regulator output for analog
Battery detector ADC input
NC
BT power supply input, 1.8V~3.6
XTAL power input, 3.6V
XTAL output
XTAL input
JTAG TMS
JTAG TCK
JTAG TDO
Page 5 of 14
BK8000L Datasheet
3.
Functional Description
3.1.
GPIO
The BK8000L has total 19 GPIOs, which can be configured as either input or
output. Most of them have second function.
Table 2 GPIO Function Mapping
GPIO0
GPIO1
GPIO2
GPIO3
GPIO4
GPIO5
GPIO6
GPIO7
GPIO8
GPIO9
GPIO10
GPIO11
GPIO12
GPIO13
GPIO14
GPIO15
GPIO16
GPIO17
GPIO18
GPIO19
GPIO20
GPIO21
Mbist Mode
Mbist Done
Mbist_Fail
input
input
input
input
input
input
input
input
input
Mbist_Pass
input
input
input
input
input
input
Mbist_Fail_BT
dram_result[2]
dram_result[1]
dram_result[0]
Perial Mode
UART2_TXD/I2C2_SCL
UART2_RXD/I2C2_SDA
pcm2_clk/TXEN
pcm2_sync/RXEN
pcm2_din/UART1_TX_Monitor
pcm2_dout/UART1_RX_Monitor
pcm2_codec_clk/spi_csn
spi_sck
spi_mosi
spi_miso
PWM0
PWM1
sd_clk/clk13m
sd_cmd/SCL
sd_data[0]/SDA
sd_data[1]
sd_data[2]
sd_data[3]
jtag_TCK
jtag_TMS
jtag_TDI
jtag_TDO
GPIO Mode
General I/O
General I/O
General I/O
General I/O
General I/O
General I/O
General I/O
General I/O
General I/O
General I/O
General I/O
General I/O
General I/O
General I/O
General I/O
General I/O
General I/O
General I/O
General I/O
General I/O
General I/O
General I/O
All GPIO can be source to wake up MCU from shut down state. In shut down
state, any level change on the set GPIO will trigger the wake up procedure.
When power on, the default state of GPIO0~GPIO9 and GPIO12~GPIO20 is
high impedance and pull low internally; the default state of GPIO10~GPIO11 is
high impedance and pull high; and the default state of GPIO21 is high impedance
only.
Page 6 of 14
Low Power Bluetooth Audio SoC
3.2.
PWM Timer and Watch Dog Timer
There are two sets of PWM timers. One fast set uses 1 MHz clock as main clock,
and another slow set uses 32 kHz clock as main clock. Each set has three 16
bits counter with 4 bit pre-divider. First two timers in slow set can be used to LED
duty cycle control.
The watch dog timer runs with 32 kHz clock, with period from 0.6 ms to 38
second.
3.3.
Power Management
The BK8000L supports USB power supply that it can work without battery. When
there is a USB power supply, it will charge the battery with automatically charge
current control while provide power to the BK8000L. The buck will give nearly
half current reduction for digital power.
The BK8000L can enter into shut down mode when there is no active connection.
The shut mode can be waked up by GPIO and USB charge.
3.4.
MCU
The 16 bit RISC MCU has 16 KB I-Cache and DMA bus, to support efficient
execution and frequently data exchange. The JTAG interface can be used to online debug, which can be also configured as GPIO.
Besides 26 MHz crystal, the MCU can run with internal programmable ROSC
clock, or 32 kHz ring oscillator clock, with programmable divided ratio.
3.5.
I2C and UART Interface
There is one set of I2C interface and one set of UART interface for debug or
external MCU control the BK8000L. They share the two same GPIO0 and GPIO1.
3.6.
FM Receiver Control Interface
Page 7 of 14
BK8000L Datasheet
The FM receiver control interface consists of a two-wire I2C interface and a 13
MHz clock for FM receiver reference.
3.7.
FLASH Access Interface
The BK8000L MCU is running with the external FLASH program memory and the
internal instruction cache. The external FLASH can be also used to store user
data such as key configuration and Bluetooth paring information.
3.8.
SPI
The 4-wires SPI supports high speed data communication, which can be used as
interface to either external FLASH or LCD controller.
3.9.
SAR ADC and LED
The SAR ADC has 10-bit resolution, and the two LED drivers support up to 10
mA current.
The SAR has six active channel as follows.
Table 3 ADC Channel Table
Channel
Number
3.10.
Detected Voltage
Description
VBAT-pin/4
VADC-pin
Charge current
detector
VCC5USB-pin/6
GPIO19
GPIO9
Battery voltage
Pin VADC voltage
Used to detect charge current and charge
circuit control
USB voltage
GPIO19 voltage
GPIO9 voltage
Audio Peripheral
There are one set of speech ADC with sample rate 8 kHz or 16 kHz, 44.1 kHz or
48 kHz. The DAC have two channels for stereo application, with sample rate 8
kHz, 16 kHz, 44.1 kHz or 48 kHz.
Page 8 of 14
Low Power Bluetooth Audio SoC
There is also a stereo line in interface, to allow external stereo input passing
internal 31 dB programmable gain amplify to stereo output.
4.
Electrical Characteristics
4.1.
Absolute Maximum Ratings
4.2.
4.3.
4.4.
Parameter
Description
MIN
TYP
MAX
Unit
VCCBAT
PRX
T STR
VCCIO
Battery regulator Supply voltage
RX input power
Storage temperature range
IO interface voltage
-0.3
-40
-0.3
3.3
10
2.8
4.2
150
3.6
dBm
℃
Recommended Operating Conditions
Parameter
Description
MIN
TYP
MAX
Unit
VCCBAT
T OPR
VCCIO
Battery regulator Supply voltage
Operation temperature range
IO interface voltage
2.8
-20
1.8
3.3
4.2
80
4.2
℃
State
Description
MIN
TYP
MAX
Unit
VCC4BAT
VCC3SYS
Load Current
VBAT
SYSLDO Output Voltage
Loading Current
2.8
2.8
3.6
4.2
3.8
150
System LDO
mA
Analog LDO/BUCK
System can choose the analog BUCK or LDO as the power supply of RF and Audio part.
State
Analog LDO
VCC3BUCKA
VBUCKA
Load Current
Analog BUCK
VCC3BUCKA
VBUCKA
Load Current
Switching frequency
Description
MIN
TYP
MAX
Unit
Analog LDO Input Voltage
Analog LDO Output Voltage
Loading Current
2.8
1.7
3.3
1.8
3.6
2.4
100
Analog BUCK Input Voltage
Analog BUCK Output Voltage
Loading Current
BUCK modulation frequency
2.8
1.7
3.3
1.8
3.6
2.4
100
10
mA
mA
MHz
Page 9 of 14
BK8000L Datasheet
4.5.
Digital LDO/BUCK
System can also choose the digital BUCK or LDO as the power supply for the Digital part.
State
Digital LDO
VSYS3V8D
VBUCKD
Load Current
Digital BUCK
VSYS3V8D
VBUCKD
Load Current
Switching frequency
4.6.
Description
MIN
TYP
MAX
Unit
Digital LDO Input Voltage
Digital LDO Output Voltage
Loading Current
2.8
3.3
1.2
3.6
1.35
100
Digital BUCK Input Voltage
Digital BUCK Output Voltage
Loading Current
BUCK modulation frequency
2.8
3.3
1.2
mA
3.6
1.35
100
10
mA
MHz
USB LDO
When USB is plug in, VCC3SYS will be generated from USB LDO.
4.7.
State
Description
MIN
TYP
MAX
Unit
VCC5USB
VCC3SYS
Load Current
USB Input Voltage
USBLDO Output Voltage
Loading Current
4.75
3.3
5.75
100
mA
MAX
Unit
Typical Power Consumption
State
Shut down
Idle-Sniff
Active (A2DP)
Active (HFP)
4.8.
Description
MIN
Software shut down, wake up from
GPIO
Idle state at Sniff mode
2DH5
HV1
TYP
50
uA
900
20
20
uA
mA
mA
RF Characteristics
Parameter
Condition
MIN
Operate Frequency
RXSENS-1 Mbps
RXSENS-2 Mbps
RXSENS-3 Mbps
Maximum received signal
Maximum RF transmit
power
RF Power Control Range
2402~2480
BER=0.001
BER=0.0001
BER=0.0001
BER=0.001
2402
TYP
MAX
Unit
2480
-90
-92
-84
MHz
dBm
dBm
dBm
dBm
dBm
30
dB
Page 10 of 14
Low Power Bluetooth Audio SoC
4.9.
Audio Characteristics
Parameter
DAC Output Amplitude
DAC output SNR
DAC Sample Rate
ADC SNR
ADC Sample Rate
5.
Condition
MIN
1 kHz sine wave
TYP
MAX
Unit
Vrms
dB
kHz
dB
kHz
96
1 kHz sine wave
48
96
48
Application Schematic
It will be provided with separate document.
6.
About the Qualification
By carefully PCB layout, the BK8000L RF performance meets FCC, CE and BQB
requirement. The Bluetooth protocol and profile provided by Beken are already
qualified and listed in SIG website. If there is any end product listing requirement
with the BK8000L, please inquire Beken for the related QDID authorization.
Page 11 of 14
BK8000L Datasheet
7.
Package Information
The BK8000L uses the QFN 6x6 48-Pin package.
Page 12 of 14
Low Power Bluetooth Audio SoC
8.
Ordering Information
Part number
BK8000LQB
Package
QFN 6mmx6mm 48-Pin
Packing
Tape Reel
MOQ (ea)
10 k
Remark:
MOQ: Minimum Order Quantity
Page 13 of 14
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 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.
Attention: Limited Modular Approval ‐ this RF Module may not be sold to the generic public
and requires professional installation.
Due to the fact that this RF Module is not equipped with an own shielding, the end‐product
incl. this RF Module has to show compliance to the FCC rules (15C / radiated emissions).
(OEM) Integrator has to assure compliance of the entire end‐product
incl. the integrated RF Module. Additional measurements (15C) and/or equipment authorizations
(e.g either a complete new certification or a Class II Permissive Change. )
may need to be addressed depending on co‐location or simultaenous
transmission issues if applicable.
Integrator is reminded to assure that these installation instructions
will not be made available to the end‐user of the final host device.
the Integrator will be responsible to satisfy SAR/ RF Exposure requirements,
when the module integrated into any (portable, mobile, fixed) host device.
The final host device, into which this RF Module is integrated" has to be labelled
with an auxilliary lable stating the FCC ID of the RF Module, such as
"Contains FCC ID: 2AG94F-6688 ".
Depending on the size of the final end‐product, the §15.19 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."
should be placed also on the device or alternatively within a prominent location of the users
manual
The §15.21 "Changes or modifications to this unit not expressly
approved by the party responsible for compliance could
void the user’s authority to operate the equipment." statement has to be included in a prominent
location of the users manual

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