FMB100 User manual Ver.1.1 Oct.
Copyright © 2021 Flairmesh Technologies All rights reserved. Flairmesh Technologies assumes no responsibility for any errors, which may appear in this document. Furthermore, Flairmesh Technologies reserves the right to alter the hardware, software, and/or specifications detailed herein at any time without notice, and do not make any commitment to update the information contained herein. Flairmesh Technologie’s products are not authorized for use as critical components in life support devices or systems.
Release Record Version Release Date Comments 0.9 Jul. 1, 2021 Draft release. 1.0 Jul. 16, 2021 Modify the pinout according to latest hardware change. 1.1 Oct. 1, 2021 Update recommended PCB footprint, FCC ID, antenna gain, thickness of the module, description of supported Bluetooth profiles, RF performance at the antenna feed point (which means the internal insertion loss of RF filter is counted in) and tape package information, which is not finalized yet.
1. Table of Contents 1 2 3 4 5 6 7 8 9 Pinout and Description ......................................................................................................................................... 7 1.1 Pin Assignments ................................................................................................................................. 7 1.2 Pinout Descriptions ............................................................................................................................
Table 1: Ordering Information ........................................................................................................................... 6 Table 2: Pinout Definitions ................................................................................................................................ 9 Table 3: Absolute Maximum Rating ................................................................................................................. 9 Table 4: Recommended Operating Conditions ......
Description: Features: FMB100 is a dual mode class 2 Bluetooth® V5.2 module. It integrates all necessary components including antenna, RF filter, baseband and profile processors into a small formfactor module in half though hole footprint. With its internal multiple processors, it runs a full Bluetooth stack including multiple profiles such as HSP/HFP, A2DP, AVRCP, OPP, SPP, HID, and GATT based BLE profiles. It also supports high quality A2DP codec such as AptX®.
1 Pinout and Description 1.1 Pin Assignments Figure 1: Pinout of FMB100 1.2 Pinout Descriptions Pin Symbol 1 GND 2 3V3/VBAT 3 PIO0/VREG_EN I/O Type Description Ground Ground Power input Battery voltage input Digital input Typically connected to an ON/OFF push button. If power is present from the battery and/or charger, and software has placed the device in the OFF or DORMANT state, a button press boots the device. Also usable as a digital input in normal operation. No pull.
strength internal pull-up/pull-down down when reset Power input 1.8V/3.3V PIO supply Power output Not recommend for powering external circuits Ground Ground 5 VCC_IO 6 1V8_OUT 7 GND 8 VCHG Power input 5V charger input 9 PIO15 Digital bidirectional with programable strength internal pull-up/pull-down Programmable IO 15, weak pull down when reset 10 PIO60 Input with strong pull-up Programmable IO 60, weak pull down when reset 11 USB_DP Digital USB Full Speed device D- I/O.
21 PIO5/UART_TX Digital bidirectional with programable strength internal pull-up/pull-down Programmable IO 3, strong pull up when reset, Additional function: ■ UART TX 22 SPK_N Analog Headphone/speaker differential output, negative 23 SPK_P Analog Headphone/speaker differential output, positive 24 MIC_BIAS Mic bias output Mic bias output 25 MIC1_N Analog Microphone differential 1 input, negative 26 MIC1_P Analog 27 MIC2_N Analog Microphone differential 2 input, negative 28 MIC2_P
2.2 Recommended Operating Conditions Operating Condition Min Typ Max Unit Operating Temperature Range* -40 -- +85 °C VCHG 4.75 5.0 6.5 V 0 -- 3.6 V VBAT Voltage 2.8 3.7 4.6 V PIO Voltage 1.7 3.3 3.6 V LED voltage 0 -- 6.5 V AIO Voltage 0 -- 1.95 V USB_DP/USB_DN Voltage Table 4: Recommended Operating Conditions Note *: Charger operates in a range from -10 to +85 (not including battery). 2.3 Input/output Terminal Characteristics 2.3.
2.3.2 LED Driver Pads LED driver pads Min Typ Max Unit High impedance state - - 5 uA Current sink state - - 50 mA V < 0.5V - - 12 Ω VIL input logic level low - - 0.4 V VIH input logic level high 1.0 - - V Min Typ Max Unit - - 10 Bits 1.746 1.800 1.
fin=1kHz 48kHz Fsample Signal to Noise Ratio, SNR B/W=20Hz->20kHz A-Weighted - 99.3 - dBA - 93.5 - dB -24 - 21.5 dB - - 100 pF Min Typ Max Unit 0dBFS signal 32Ω load fin=1kHz 48kHz Fsample THD+N B/W=20Hz->20kHz -1dBFS signal 32Ω load Digital Gain Digital Gain Resolution = 1/32 Max capacitive load Per terminal to ground Table 8: Class-D DAC Audio Output 2.3.
Input impedance 0dB to 24dB analog gain - 20 - kΩ 27dB to 39dB analog gain - 10 - kΩ - 101.1 - dBA - 85.9 - dB -24 - 21.5 dB 0 - 39 dB fin=1kHz 48kHz Fsample Signal to Noise Ratio, SNR B/W=20Hz->20kHz A-Weighted THD+N < 0.1% 2.4V pk-pk input (0dB gain) THD+N fin=1kHz 48kHz 2.4V pk-pk input (0dB gain) Digital Gain Digital Gain Resolution = 1/32 Analog Gain 3dB Steps Table 10: High-quality Single Ended Audio Input 2.3.
Output current capability - 0.07 - 3.00 mA Output noise B/W=20Hz->20kHz Unweighted 4.5 5.1 7.3 uVrms Crosstalk between microphones Using recommended application circuit - 80 - dB Load capacitance From parasitic PCB routing and package - - 0.1 nF Table 12: Microphone Bias 2.3.9 VBAT voltage measurement accuracy Measurement VBAT voltage measurement accuracy Min Typ Max Unit - +/-1 +/-3 % Table 13: VBAT Measurement Accuracy 2.
3 Physical Interfaces 3.1 Power Supply There are two power supply schemes available for the module. It can be powered by a Li-poly battery (3.7V) or a 3.3V DC. Please refer to the reference designs in 5. 3.2 Reset The module may be reset from several sources: RESETB pin, power-on reset, USB charger attach reset and software configured watchdog timer. The RSTB pin is an active low reset. It is recommended that RSTB be applied for a period greater than 120us.
battery application, the VBAT pin can measure the battery voltage directly. 3.5 LED Drivers The FMB100 includes a 5 PWM LED driver for driving RGB LEDs for producing a wide range of colors. There are 3 open-drain LED outputs multiplexed with AIOs. Any PIOs can also be mapped into LED output by firmware. 3.6 Serial Interfaces 3.6.1 UART The module has a standard UART serial interface that provides a simple mechanism for communicating using RS232 protocol.
3.6.4 SPI Interface Any four PIOs can be used to form a SPI interface. Firmware can be customized to connect with variable peripherals. 4 iNova Stack Figure 2: FMB100 Stacks FMB100 is supplied with Bluetooth 5.2 compliant stack firmware. With Flairmesh’s iNova profile stacks, the host MCU can easily integrate HFP, A2DP, AVRCP, SPP, OPP, HID profiles and iAP over Bluetooth functions, it also supports GATT based profiles over BLE such as HOGP.
6 Mechanical Size and Recommended PCB Footprint Figure 4: Mechanical Size and Recommended PCB Footprint Flairmesh Technologies Confidential -18-
7 RF Layout Guidelines FMB100 integrates an on-board Meander line antenna to radiate and receive the RF signals. The antenna has been well designed and tuned for common usage but it still needs to have good ground clearance around the antenna to get good RF performance. 1. No ground below antenna region (copper cut out in Figure 4) of the FMB100. 2. There should also have a good ground panel and clearance on the main PCB board on which the module is mounted. As shown in Figure 5.
8 Reflow Profile FMB100 is compatible with industrial standard reflow profile for Pb-free solders. The soldering profile depends on various parameters necessitating a set up for each application. The data here is given only for guidance on solder re-flow. There are four zones: Preheat Zone - This zone raises the temperature at a controlled rate, typically 1-2.5°C/s. Equilibrium Zone - This zone brings the board to a uniform temperature and also activates the flux.
Figure 7: Tape Package Plastic tape, plus aluminum bags do vacuum packing. Items in One Package number of TBD PCS, external aluminum foil vacuum packaging. The module’s Moisture Sensitivity Level is level 3 in accordance with JEDEC J-STD-020.
l'utilisateur ou des tiers. Ce dispositif ne doit pas être utilisé à proximité d’une autre antenne ou d’un autre émetteur.
FCC Statement： Any Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. 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.
OEM Guidance 1. Applicable FCC rules This module is granted by Single Modular Approval. It complies to the requirements of FCC part 15C, section 15.247 rules. 2. The specific operational use conditions This module can be used in IoT devices. The input voltage to the module is nominally 2.2V-5.5V DC. The operational ambient temperature of the module is -20 to 85 degree C. Only the embedded PCB antenna is allowed. Any other external antenna is prohibited. 3.Limited module procedures N/A 4.
6. Antenna Antenna type :PCB Antenna; Antenna Max. Peak Gain 2.7dBi 7. Label and compliance information An exterior label on OEM’s end product can use wording such as the following: “Contains FCC ID: 2A22WFMB100” 8.
9. Additional testing, Part 15 Sub part B disclaimer The final host / module combination need to be evaluated against the FCC Part 15B criteria for unintentional radiators in order to be properly authorized for operation as a Part 15 digital device.
