DVK-BT850-SA

A Datasheet BT85x Series Development Kits Applicable to the following Laird part numbers: DVK-BT850-SA DVK-BT850-ST Version 1.0 BT85x Series Datasheet REVISION HISTORY Version Date 1.0 12 Jan 2018 Notes Contributor Jacky Kuo Raj Khatri Initial Release Embedded Wireless Solutions Support Center: http://ews-support.lairdtech.com www.lairdtech.com/bluetooth 2 © Copyright 2018 Laird. All Rights Reserved Approver Jonathan Kaye Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852 2923 0610 BT85x Series Datasheet CONTENTS 1 Overview.............................................................................................................................................................4 2 Introduction ........................................................................................................................................................4 2.1. Package Contents .......................................................................................................................................4 2.2. DVK-BT850 – Main Development Board ....................................................................................................4 3 Getting to Know the Development Board ..........................................................................................................4 4 Power Supply ......................................................................................................................................................4 5 Interface Specification ........................................................................................................................................5 6 5.1. GPIOs (PIN HEADER – J2) ............................................................................................................................5 5.2. PCM/I2S Interface (Pin Header – J1) ...........................................................................................................6 5.3. DC Power Supply ........................................................................................................................................6 5.4. Push Button ................................................................................................................................................7 Other Features....................................................................................................................................................7 6.1. Current Consumption Measurement .........................................................................................................7 7 Additional Documentation .................................................................................................................................8 8 Additional Assistance....................................................................................................................................... 10 Embedded Wireless Solutions Support Center: http://ews-support.lairdtech.com www.lairdtech.com/bluetooth 3 © Copyright 2018 Laird. All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852 2923 0610 BT85x Series Datasheet 1 OVERVIEW Laird’s BT850 development kit (DVK-BT850-Sx) provides a platform for rapid prototyping of BT850-Sx series modules. The development board provides simple, easy-to-use access to the various hardware interfaces and configuration options for the module. The DVK is the perfect platform to provide for early development testing of the BT850-Sx series features and functionality, prior to designing the module onto a host PCB. This datasheet is for the development board PCB which is DVK-BT850 1.0 on PCB. 2 INTRODUCTION The Laird DVK-BT850-Sx is designed to support the rapid development of applications and evaluation for the specific Laird Bluetooth module part number BT850-SA or -ST. In-depth documentation for this product is available from the BT850 series product pages: http://www.lairdtech.com/Products/BT850 Package Contents Each DVK-BT850-Sx includes the following items: Development motherboard USB cable – USB A type male to Micro-USB type Stand-off Insert card External antenna The motherboard has the BT850-Sx module already soldered onto it and all available hardware interfaces are exposed. The USB cable can be used to power, control, and configure the BT850-Sx. Screw nuts x 4 pcs; Stand-off x 4 pcs Provides links to additional information including BT850-Sx datasheet, utilities, schematics, and application notes. Only supplied with DVK-BT850-ST. Antenna supplied is Laird part # 0600-00040. DVK-BT850-Sx – Main Development Board The development board allows the Laird Bluetooth module to be connected to a PC. The development board provides USB interface linking to PCB and the BT850-Sx host interface. Any Windows PC (Windows 7. or later) auto-installs the generic Microsoft Bluetooth driver. Getting to Know the Development Board Figure 1: Main DVK-BT850-Sx Board 3 POWER SUPPLY Table 1: Input voltage Minimum Typical Maximum 4.5V 5V 5.5V Input Voltage Power supply options for powering development board: ▪ ▪ USB External DC supply The DVK-BT850-Sx includes a USB cable to provide power to the development board. This should be plugged into a PC USB port, a USB hub, or a main adaptor with a USB output. If a hub is used, it should be a powered USB hub to ensure sufficient current is available at the port. The BT850-Sx module can be driven by the available current at a USB port. Embedded Wireless Solutions Support Center: http://ews-support.lairdtech.com www.lairdtech.com/bluetooth 4 © Copyright 2018 Laird. All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852 2923 0610 BT85x Series Datasheet The low noise LDO (U4) on the DVK-BT850-Sx provides the 3.3V to support the entire board’s operating voltage. 4 INTERFACE SPECIFICATION GPIOs (PIN HEADER – J2) There are three GPIO signals (GPIO [5;6;7]) presented on pin header J2. These can be used for an LED indicator or Cypress GCI (Global Coexistence Interface). The following (Table 2) shows the default settings by firmware. Table 2: Default setting by firmware GPIO GPIO_5 GPIO_6 GPIO_7 Note: Function LED indications Cypress GCI; BT_SECI_IN (same as WLAN_Activity) Cypress GCI; BT_SECI_OUT (same as BT_Activity) All GPIOs functions are configured by firmware and any changes from the defaults would require a new firmware load. The pin descriptions of J2 are shown in Table 3. Table 3: J2 pin descriptions J2 Description Direction Pin-2 Pin-3 GPIO[5] GPIO[7] O O Pin-4 GPIO[6] I There are four LED indicators on the DVK-BT850-Sx as shown in Table 4. Table 4: LED indicators LED LED1 LED2 LED3 Description Connected to the BT_SECI_I Connected to the BT_SECI_OUT Connected to the output of the U4 (LDO) LED4 Connected to GPIO_5 Embedded Wireless Solutions Support Center: http://ews-support.lairdtech.com www.lairdtech.com/bluetooth Function Cypress GCI indication Cypress GCI indication 3.3V power supply rail indication For BT850-Sx of status indications including inquiry, connected, and data traffic. ▪ When ininquiry mode, the LED is flashing with one-second periods. BR/EDR ▪ When the BT connection is created, the LED is Modes solid light state . ▪ When the BT has data traffic, the LED is flashing with 250 ms periods ▪ When in inquiry mode, the LED is flashing with one-second periods. ▪ When the BT connection is created, the LED is LE Mode solid light state. ▪ When the BT has data traffic, the LED is flashing with 250 ms periods 5 © Copyright 2018 Laird. All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852 2923 0610 BT85x Series Datasheet Figure 2: Pin headers - J2 Figure 4: LED1, LED2, LED4 Figure 3: LED3 . PLEASE NOTE – The LED4 status configuration is controlled by firmware, any changes from the above default, please contact Laird. PCM/I2S Interface (Pin Header – J1) The DVK-BT850-Sx has a 4-wire digital audio port capable of operating in PCM or I2S mode; it isa dedicated audio interface and cannot be used as general purpose GPIOs. The pin descriptions of J1 in PCM/I2S are shown in Table 5. Table 5: J1 Descriptions for PCM/I2S Interface J11 Description (PCM/I2S/SPI) Pin-1 GND Pin-2 PCM_SYNC/I2S_WS Pin-3 Pin-4 Direction I/O 2 I/O 2 Input 2 Output PCM_CLK/I S_CLK PCM_IN/I S_DI Pin-5 PCM_OUT/I S_OUT Pin-6 GND Figure 5: Pin Headers - J11 for PCM/I2S Interface DC Power Supply ▪ ▪ USB Connector – The development kit provides a USB Type micro-USB connector (USB1) which allows connection to any USB host device. The connector optionally supplies power to the DVK-BT850-Sx when SW2 is set to the USB position. DC JACK – The development kit provided a DC JACK (CN1) for DC power supply input with an LDO (U4) to converting input voltage to 3.3V. The operation voltage range of the LDO is from 2.5V to 5.5V (1) and the current consumption is 1A maximum. When using the DC JACK for supply voltage to the DVK-BT850, the SW2 need to set to the DC JACK position. (1) The DVK-BT850-Sx that it just supported +5V input only. Embedded Wireless Solutions Support Center: http://ews-support.lairdtech.com www.lairdtech.com/bluetooth 6 © Copyright 2018 Laird. All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852 2923 0610 BT85x Series Datasheet Figure 6: Micro-USB Connector (USB1), SW2, and DC JACK (CN1) Push Button SW4 (push button TACT switch) provides a reset signal to reset the BT850-Sx module (Error! Reference source not found.). Push Button Label on DVK-BT850 PCB Description SW4 Reset Reset the BT850-Sx module Figure 7: SW4 5 OTHER FEATURES Current Consumption Measurement A removable jumper (J3) is provided to break the power supply line directly to the module (if SB1 is cut), allowing you to measure current consumption. For normal operation, J3 must be fitted. Error! Reference source not found. shows the locations of SB1 and J3. Note: This measures the current consumption of the BT850-Sx series module ONLY. Embedded Wireless Solutions Support Center: http://ews-support.lairdtech.com www.lairdtech.com/bluetooth 7 © Copyright 2018 Laird. All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852 2923 0610 BT85x Series Datasheet Figure 8: Current measurement circuit To prepare the board for current measurement, cut the shorting of the solder bridge SB1. After this modification, there are two primary ways to measure the current consumption: ▪ ▪ Using Ammeter – Connect an ampere meter between the two pins of connector J3. This directly monitors the current. Using Oscilloscope (Note below) – Mount a resistor on the footprint R3. The resistor should not be larger than 10 Ohm. Connect an oscilloscope or similar with two probes on the pin on the J3 connector and measure the voltage drop. The voltage drop is proportional with current consumption. If a one-Ohm resistor is chosen, 1 mV equals 1 mA. There is also a third way to measure current: ▪ Using Current Shunt Monitor – The current drawn by the BT850-Sx module can be monitored using the Current Shunt Monitor (CSM), INA216 (U3). The gain of INA216 is 200 V/V for lowest possible drop voltage. Note: The Current Shunt Monitor method allows the dynamic current consumption waveforms on oscilloscope as the BT850-Sx radio operates. This can provide insight into power optimization. Current consumed by the BT850-Sx series module is measured as a voltage (that is proportional to the current) using the CSM by connecting measuring voltmeter or oscilloscope to TP3 Connect measuring voltmeter or oscilloscope GND to TP2. I(mA) = Vmeas_TP3(mV) /51 CAUTION: To avoid permanent damage to the IC U3 (the current shunt monitor), do not short the TP3 output to GND. 6 ADDITIONAL DOCUMENTATION Laird offers a variety of documentation and ancillary information to support our customers through the initial evaluation process and ultimately into mass production. Additional documentation can be found at the BT850 product page under the documentation tab. It includes: ▪ ▪ BT850 – Class 1 BT4.2 Dual Mode HCI module – Product brief BT850 Datasheet - Hardware Integration Guide Embedded Wireless Solutions Support Center: http://ews-support.lairdtech.com www.lairdtech.com/bluetooth 8 © Copyright 2018 Laird. All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852 2923 0610 BT85x Series Datasheet ▪ BT850 UART HCI Bluetooth Module for Linux – User’s Manual – Using the BT850 with the BlueZ Linux BCCMD tool For any additional questions or queries or to receive local technical support for the DVK-BT850-Sx or BT850Sxmodule, please visit our support site at https://laird-ews-support.desk.com/. Embedded Wireless Solutions Support Center: http://ews-support.lairdtech.com www.lairdtech.com/bluetooth 9 © Copyright 2018 Laird. All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852 2923 0610 BT85x Series Datasheet 7 ADDITIONAL ASSISTANCE Please contact your local sales representative or our support team for further assistance: Laird Technologies Connectivity Products Business Unit Support Centre: http://ews-support.lairdtech.com Email: wireless.support@lairdtech.com Phone: Europe: Hong Kong: Web: Americas: +1-800-492-2320 +44-1628-858-940 +852 2923 0610 http://www.lairdtech.com/bluetooth © Copyright 2018 Laird. All Rights Reserved. Patent pending. Any information furnished by Laird and its agents is believed to be accurate and reliable. All specifications are subject to change without notice. Responsibility for the use and application of Laird materials or products rests with the end user since Laird and its agents cannot be aware of all potential uses. Laird makes no warranties as to non-infringement nor as to the fitness, merchantability, or sustainability of any Laird materials or products for any specific or general uses. Laird, Laird Technologies, Inc., or any of its affiliates or agents shall not be liable for incidental or consequential damages of any kind. All Laird products are sold pursuant to the Laird Terms and Conditions of Sale in effect from time to time, a copy of which will be furnished upon request. When used as a tradename herein, Laird means Laird PLC or one or more subsidiaries of Laird PLC. Laird™, Laird Technologies™, corresponding logos, and other marks are trademarks or registered trademarks of Laird. Other marks may be the property of third parties. Nothing herein provides a license under any Laird or any third party intellectual property right. Embedded Wireless Solutions Support Center: http://ews-support.lairdtech.com www.lairdtech.com/bluetooth 10 © Copyright 2018 Laird. All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852 2923 0610