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What is BM20?

This electronic component, produced by the manufacturer "ISSC", performs the same function as "Bluetooth 4.1 Stereo Audio Module".


BM20 Datasheet PDF - ISSC

Part Number BM20
Description Bluetooth 4.1 Stereo Audio Module
Manufacturers ISSC 
Logo ISSC Logo 


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Total 30 Pages



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No Preview Available ! BM20 datasheet, circuit

BM20/BM23
Bluetooth® 4.1 Stereo Audio Module
Features:
Complete, Fully Certified, Embedded
2.4 GHz Bluetooth® Version 4.1
Module
Bluetooth Classic (BDR/EDR)
Bluetooth SIG Certified
Onboard embedded Bluetooth Stack
Transparent UART mode for seamless serial
data over UART interface
Easy to configure with Windows GUI or direct
by MCU
Firmware can be field upgradable via UART
Compact surface mount module: 29 x 15 x
2.5 mm3
Castellated surface mount pads for easy
and reliable host PCB mounting
Environmentally friendly, RoHS compliant
Perfect for Portable Battery Operated
Devices
Internal Battery Regulator Circuitry
Worldwide regulatory certifications
Audio-In / Out
BM23 support digital audio I2S format.
BM20 support analog audio output.
Operational:
Operating voltage: 3.0V to 4.2V
Temperature range: 20C to 70°C
Simple, UART interface
Integrated crystal, internal voltage
regulator, and matching circuitry
Multiple I/O pins for control and status
RF/Analog:
Frequency: 2.402 to 2.480 GHz
Receive Sensitivity: 91 dBm (2Mbps EDR)
Power Output: class 2 / +4dBm max.
Connection Distance: >10m
(free space and no interference)
Audio processor
Support 64 kb/s A-Law or -Law PCM format, or
CVSD (Continuous Variable Slope Delta
Modulation) for SCO channel operation.
Noise suppression
Echo suppression
SBC and optional AAC decoding
Packet loss concealment
Build-in four languages (Chinese/ English/
Spanish/ French) voice prompts and 20 events for each
one (This function can be set up in “IS20XXS_UI” tool.)
Support SCMS-T
Audio Codec
20 bit DAC and 16 bit ADC codec
98dB SNR DAC playback
Peripherals
Built-in Lithium-ion battery charger (up to 350mA)
Integrate 3V, 1.8V configurable switching regulator and
LDO
Built-in ADC for battery monitor and voltage sense.
A line-in port for external audio input
Two LED drivers
Flexible HCI interface
High speed HCI-UART (Universal Asynchronous
Receiver Transmitter) interface (up to 921600bps)
MAC/Baseband/Higher Layer:
Secure AES128 encryption
Bluetooth profiles
- HFP v1.6
- HSP v1.1
- A2DP v1.2
- AVRCP v1.5
- SPP v1.0
- PBAP v1.0
Antenna:
Printed Antenna
Compliance:
Bluetooth SIG QDID: 58996
Module certified for the United States (FCC) and
Canada (IC), European Economic Area (CE),
Korea (LTA), Taiwan (NCC) and Japan (MIC)
Page 1

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BM20 equivalent
Stereo Module
1.1 INTERFACE DESCRIPTION
BM20 pin diagram is shown in Figure 1-3. The pin descriptions are shown in Table 1-1
FIGURE 1-3: BM20 PIN DIAGRAM
TABLE 11: BM20 PIN DESCRIPTION
Pin No. Pin type
Name
Description
IO pin, default pull-high input (Note 1)
1
I/O
P0_0
1. Slide Switch Detector, active low.
2. UART TX_IND, active low.
2I
EAN
Embedded ROM/External Flash enable
H: Embedded; L: External Flash
3
I
P3_0
IO pin, default pull-high input (Note 1)
Line-in Detector (default), active low.
IO pin, default pull-high input
4
I
P2_0
System Configuration,
H: Application L: Baseband(IBDK Mode)
IO pin, default pull-high input (Note 1)
1. NFC detection pin, active low.
5
I/O
P1_5
2. Out_Ind_0
3. Slide Switch Detector, active low.
4. Buzzer Signal Output
IO pin, default pull-high input. (Note 1)
6
I/O
P0_4
1. NFC detection pin, active low.
2. Out_Ind_0
Page 5


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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for BM20 electronic component.


Information Total 30 Pages
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