TDK blu2i manual RS232 Modem Signals, Direction Function, Direction Connector Pin Label Function

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6RS232 Modem Signals

Just as a telephony modem has control and status lines, the blu2i Module also provides for 6 control and status lines as per the table below. The direction column is as seen from the modules viewpoint.

Direction

Function

IN or OUT

CI also known as RI (Ring Indicate)

IN or OUT

DCD (Data Carrier Detect)

IN

DSR (Data Set ready)

OUT

DTR (Data Terminal Ready)

IN

CTS (Clear to Send)

OUT

RTS (Request to Send)

The first four lines are under program control and as such require GPIO pins and they are mapped to I/O as per the table below. The last two are under control of the UART driver and their functionality is always enabled.

PIO

Direction

Connector Pin Label

Function

Pin

 

 

 

0

IN/OUT

GPIO1

General Purpose I/O

1

IN/OUT

GPIO2

General Purpose I/O

2

IN/OUT

UART_RI

Input/Output from module

3

IN/OUT

UART_DCD

Input/Output from module

4

IN

UART_DSR

Input to Module

5

IN/OUT

GPIO3/UART_DTR

General Purpose I/O (or

 

 

 

DTR functionality)

6

IN/OUT

GPIO4

General Purpose I/O

 

 

 

(Right LED)

7

IN/OUT

GPIO5

General Purpose I/O (Left

 

 

 

LED)

Notes:

1PIO4 (DSR) is used by the blu2i module to sense that the host is connected, and is intricately linked with connections. For outgoing calls, if this line is not asserted then an error is immediately. Similarly for AT+BTP and AT+BTG.

While in a call, for appropriate modes, a deassertion means fall into command state. If the deassertion exists for longer than the period

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Contents Blu2i Module User Guide Contents Safety Guidelines Before You BeginRF Approvals Feature Implementation FunctionsApplication Interface Serial InterfacePower Supply Details the power consumption in different modesBlu2i Module SPI Bus Parallel PIO PortPCM Codec Interface Electrical specification of the interface Pin Signal DescriptionPage Electric Characteristics Function Signal Name Pin No Signal level CommentsUSB D Physical Characteristics Mechanical DimensionsBoard to Board Connector Mounting the blu2i Module onto the application platformPart number Stacking height HRS number Parameter Specification 40 pin Board to Board connector Electrical and radio characteristics Operating temperaturesPower Consumption Absolute Maximum ratingsATD Baud rate 9600 38400 115200 460800 Low Power Modes using Sniff High Power Consumption RF performance 5.5.1Transmit Power 2Receive Sensitivity4Performance against Temperature Reliability Parameter Minimum MaximumRS232 Modem Signals Direction Connector Pin Label FunctionDirection Function Modem signalling over Bluetooth Break signal on RX lineReset Pure Cable Replacement Mode Data CableAudio Cable ATS512=3 ATS0=-1ATS512=1 Modem Control and Status Signals ATS504=1 ATS530=2000 ATS532=1Getting Started ATS0=1ATDbdaddr AT+BTP Factory Default Mode SoftwareBaud rate 300 to Parity Appendix a Europe EU Declaration of ConformityFCC and Industry Canada Statements Appendix B ESD Electrostatic DischargeAdditional Statement Warranty

blu2i specifications

The TDK Blu2i is an innovative Bluetooth audio device designed to elevate the listening experience for audiophiles and casual listeners alike. This versatile device combines advanced Bluetooth technology with high-quality audio performance to create an outstanding solution for wireless sound.

One of the standout features of the TDK Blu2i is its compatibility with various Bluetooth profiles, allowing it to seamlessly connect with a wide range of devices, including smartphones, tablets, and laptops. Utilizing the latest Bluetooth 5.0 technology, the Blu2i ensures a stable connection, reduced latency, and an extended range, making it ideal for both indoor and outdoor use.

In terms of audio performance, the TDK Blu2i boasts impressive sound quality. The device supports high-resolution audio streaming, delivering superior clarity and detail. Users can enjoy their favorite tracks with deep bass, crisp highs, and an overall balanced sound profile. The built-in digital signal processing (DSP) enhances audio playback, ensuring that every note is rendered with precision.

Another notable characteristic is the TDK Blu2i's long-lasting battery life. With up to 20 hours of playback on a single charge, users can indulge in extended listening sessions without worrying about frequent recharging. The device also features quick charge capability, allowing users to enjoy several hours of playback with just a short charging session.

The design of the TDK Blu2i is both stylish and functional. Its compact and lightweight form factor makes it easy to carry, while its durable construction ensures it can withstand everyday use. The device is equipped with intuitive controls, allowing users to adjust volume, skip tracks, and manage calls effortlessly.

Additionally, the TDK Blu2i supports voice assistant integration, enabling users to access their smart devices hands-free. This feature adds an extra layer of convenience, allowing for seamless multitasking without the need to reach for a phone.

In summary, the TDK Blu2i is a powerful Bluetooth audio device that encapsulates the essence of modern audio technology. With its high-quality sound, extensive battery life, and user-friendly features, it caters to the needs of any audio enthusiast looking for a reliable and high-performing wireless solution.
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