2ACCRMB06BT Module

•Feature - Bluetooth® v5.1 - Bluetooth, Bluetooth low energy - 120MHz Qualcomm® Kalimba TM audio DSPs - Dual core application subsystem 32 MHz operation - Flexible QSPI flash programmable platform - High-performance 24-bit stereo audio interface - Digital and analog microphone interfaces - SBC, and AAC audio codecs support - Serial interfaces: UART, Bit Serializer (I 2 C/SPI),USB 2.0 - 256K RAM,32M Flash •Application Subsystem - Dual core application subsystem 32 MHz operation - 32-bit Firmware Processor: - Reserved for system use - Runs Bluetooth upper stack, profiles, house- keeping code - 32-bit Developer Processor:Runs developer applications - Both cores execute code from external flash memory using QSPI clocked at 32MHz - On-chip caches per core allow for optimized performance and power - consumption •User Interface - Send AT command over UART - Firmware upgrade over USB - PCM interface (I2S,SPDIF) - I2C interface(Master ) •GeneralI/O - 13 general purpose I/Os - 2 analogue I/O - Three fully configurable LED drivers •Single voltage supply: 2.8-4.2V •Small form factor: 23.24 x 11.93 x 2.2mm •Operating temperature range: -40 °C to 85 °C Mar 1 2017 EH-MB06 Audio Module Data Sheet EH-20211215-DS Rev1.3 FCC ID: 2ACCRMB06 IC: 22745-MB06 HVIN: EH-MB06 EH-MB06 ©EhongTechnologyCo.,LtdPage2of23 VERSIONHISTORY VersionComment V1.0Currentconsumptionadded V1.1AdditionRXandTX V1.2AddaptXmodel V1.3AddBlockDiagram ConfidentialandProprietary–EhongTechnologyCo.,Ltd NOPUBLICDISCLOSUREPERMITTED:Pleasereportpostingsofthisdocumentonpublicservers orwebsitesto:[email protected] RestrictedDistribution:NottobedistributedtoanyonewhoisnotanemployeeofeitherEhong TechnologyCo.,LtdoritsaffiliatedcompanieswithouttheexpressapprovalofEhongConfiguration Management. Nottobeused,copied,reproduced,ormodifiedinwholeorinpart,noritscontentsrevealedinany mannertootherswithouttheexpresswrittenpermissionofEhongTechnologyCo.,Ltd. ThisBluetoothtrademarkisownedbytheBluetoothSIGInc.,USAandislicensedtoEhong Technologies.Allothertrademarkslistedhereinareownedbytheirrespectiveowners. © 2017EhongTechnologyCo.,Ltd.Allrightsreserved. EH-MB06 ©Ehong TechnologyCo.,LtdPage 3 of 23 Contents 1. Description..............................................................................................................................................................5 2. Application..............................................................................................................................................................5 3. EH-MB06 Productnumbering............................................................................................................................5 4. ElectricalCharacteristic......................................................................................................................................6 4.1. Block Diag ram.................................................................................................................................................6 4.2. Recommendoperationconditions...............................................................................................................6 4.3.AbsoluteMaximumRating...............................................................................................................................7 4.4. Input/outputTerminalCharacteristics...........................................................................................................7 4.4.1.DigitalTerminals.......................................................................................................................................7 4.4.2.USB.............................................................................................................................................................8 5. Pinoutand TerminalDescription......................................................................................................................8 5.1. Pin Configuration..............................................................................................................................................8 6. PhysicalInterfaces..............................................................................................................................................11 6.1. PowerSupply..................................................................................................................................................11 6.2. Reset................................................................................................................................................................12 6.3. PIO....................................................................................................................................................................12 6.4. AIO....................................................................................................................................................................12 6.5. RF interface.....................................................................................................................................................12 6.6. UART................................................................................................................................................................12 6.7. DigitalAudioInterfaces.................................................................................................................................13 6.7.1.PCM..........................................................................................................................................................14 6.7.2.DigitalAudioInterface(I2S)..................................................................................................................14 6.7.3.IEC 60958Interface(SPDIF)................................................................................................................17 6.8. Microphoneinput..................................................................…

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Company Name: ShangHai Ehong Technology Co.,Ltd. Add: Room 501, No.485 Xingmei Road, Minhang district, Shanghai, China Tel: 021-61263536 Fax: 021-61263536 E-mail: [email protected] FCC Authorization Date:2023- 01-13 FEDERAL COMMUNICATIONS COMMISSION Aut horization and Evaluation Division 7435 Oakl and Mills Road Columbia, MD 21046 Subj ect: Agent Authorization To whom it may concern: We, ShangHai Ehong Technology Co.,Ltd. Hereby authorizes CHINA CERTIFICATION ICT CO., LTD (DONGGUAN) to act on its behalf in all matters relating to applicati on for Equipment authorization, including the signing of all documents relating to these matters. All acts carried out by CHINA CERTIFICATION ICT CO., LTD (DONGGUAN) on our behalf shall have t he same effect as o ur own action. We, t he u ndersigned, hereby certify that we are not subj ect to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5 301 of the A nti-Drug Abuse Act of 1988, 21 U.S.C. 862. This au thorization is valid until f urther written notice f rom the applicant. Sincerely Your s, Signature: P rinted Name: Rik Tang Title: CEO QA-FR-170-B

Company Name: ShangHai Ehong Technology Co.,Ltd. Add: Room 501, No.485 Xingmei Road, Minhang district, Shanghai, China Tel: 021-61263536 Fax: 021-61263536 E-mail: [email protected] FCC Confidential Authorization Date: 2023-01-13 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 S ubject: Confidentiality Request regarding application for certification of FCC ID: 2ACCRMB06 In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, ShangHai Ehong Technology Co.,Ltd. hereby requests long-t erm confidential treatment of information accompanying this application as outlined below: •Block Diagram •Schematics •Operation Description The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sin cerely, Signature: Printer Name: Rik Tang Title: CEO QA -FR-171-A

Company Name: ShangHai Ehong Technology Co.,Ltd. Add: Room 501, No.485 Xingmei Road, Minhang district, Shanghai, China Tel: 021-61263536 Fax: 021-61263536 E-mail: [email protected] Modular Approval Letter Date:2023-01-13 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 We, ShangHai Ehong Technology Co.,Ltd., hereby request Modular Approval for Product: BT Module (Model number:EH-MB06, FCC ID: 2ACCRMB06).The EUT meets all of the requirement for modular approval as detailed in FCC 15.212. the requirements is described below: 1. The modular has RF shielding, please refer to the EUT photo. 2. The modular transmitter has buffered modulation/data inputs, Buffered data inputs stage has been integrated in chip (Model: QCC3021). 3. The modular transmitter has its own power supply regulation. Please refer to the Schematic. 4. Comply with the antenna requirements of Section 15.203 and 15.204(c), the modular transmitter has a PCB antenna when testing. Employ a “unique” antenna coupler; please refer to the EUT photo. 5. The EUT was tested in a stand-alone configuration, please refer to setup photos exhibit for details. 6. The module labeled with its own FCC ID. 7. Comply with any specific rules or operating requirements that ordinarily apply to a complete transmitter and the manufacturer must provide adequate instructions along with the module to explain any such requirements. The necessary explanation to be complied with this requirement is contained in the user manual; band please refers to the User Manual. 8. Comply with FCC §15.247 (i) & §1.1310 & §2.1091 RF exposure requirements in its final configuration. Sincerely, Signature: Print Name: Rik Tang Title: CEO

EXHIBIT B - EUT EXTERNAL PHOTOGRAPHS Test Board EUT Test Board EUT EUT

F CC ID: 2ACCRMB06 IC: 22745-MB06 HVIN: EH-MB06

EXHIBIT C - EUT INTERNAL PHOTOGRAPHS EUT Chip Test Board EUT Antenna

China Certification ICT Co., Ltd (Dongguan) Report No.: CR22080042-00A Page 43 of 43 5. RF EXPOSURE EVALUATION 5.1 Applicable Standard FCC §15.247 (i) Systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy levels in excess of the Commission's guidelines. See §1.1307(b)(1) of this chapter. 5.2 Procedure According to §1.1307(b)(3)(i) (C) Or using Table 1 and the minimum separation distance (R in meters) from the body of a nearby person for the frequency (f in MHz) at which the source operates, the ERP (watts) is no more than the calculated value prescribed for that frequency. For the exemption in Table 1 to apply, R must be at least λ/2π, where λ is the free-space operating wavelength in meters. If the ERP of a single RF source is not easily obtained, then the available maximum time-averaged power may be used in lieu of ERP if the physical dimensions of the radiating structure(s) do not exceed the electrical length of λ/4 or if the antenna gain is less than that of a half-wave dipole (1.64 linear value). Table 1 to § 1.1307(b)(3)(i)(C) - Single RF Sources Subject to Routine Environmental Evaluation RF Source frequency (MHz) Threshold ERP (watts) 0.3-1.34 1,920 R 2 . 1.34-30 3,450 R 2 /f 2 . 30-300 3.83 R 2 . 300-1,500 0.0128 R 2 f. 1,500-100,000 19.2R 2 . 5.3 Measurement Result Radio Frequency (MHz) λ/2 Π (mm) Distance (mm) Exemption ERP (mW) Maximum Conducted Power including Tune-up Tolerance (dBm) Antenna Gain (dBi) ERP MPE- Based Exemption dBm mW BLE 2402-2480 19.88 200 768 5 2.00 4.85 3.05 Compliant BDR/EDR 2402-2480 19.88 200 768 5 2.00 4.85 3.05 Compliant Note: The Value of Maximum Conducted Power including Tune-up Tolerance was declared by the customer. Result: The device compliant the MPE-Based Exemption at 20cm distances. ===== END OF REPORT =====

ANTENNA DOCUMENT 1:SPECIFICATIONS 1.2 Electrical Specifications I TEMSPECUNIT Frequenc y2400-2500MHz Gain 2(Max) dB i S.W.R<=2.0 Antenna typetypePIFA Im pedance50 Ω 1.3 Mechanical Specification ITE MSPECUNIT Size 1 9 mm Radiator materialmaterialBrass(Gold coating) Operation TemperatureTemperat ure -20—+65 1.4 Appearance and Dimensions 1.1 Basic information Manufacturer Model EH-MB06-RT001 name Ehong Technology Co.,Ltd ANTENNA DOCUMENT 2:MEASUREMENT PHI=0 PHI=90 THET A=90

TEST REPORT Applicant: ShangHai Ehong Technology Co.,Ltd. Address: 501, No.485 Xingmei Road, Minhang district, Shanghai, China FCC ID: 2ACCRMB06 Product Name: BT Module Model Number: EH-MB06 Standard(s): 47 CFR Part 15, Subpart C(15.247) ANSI C63.10-2013 KDB 558074 D01 15.247 Meas Guidance v05r02 The above equipment has been tested and found compliant with the requirement of the relative standards by China Certification ICT Co., Ltd (Dongguan) Report Number: CR22080042-00A Date Of Issue: 2022-10-29 Reviewed By: Sun Zhong Title: Manager Test Laboratory: China Certification ICT Co., Ltd (Dongguan) No. 113, Pingkang Road, Dalang Town, Dongguan, Guangdong, China Tel: +86-769-82016888 China Certification ICT Co., Ltd (Dongguan) Report No.: CR22080042-00A Page 2 of 43 Test Facility The Test site used by China Certification ICT Co., Ltd (Dongguan) to collect test data is located on the No. 113, Pingkang Road, Dalang Town, Dongguan, Guangdong, China. The lab has been recognized as the FCC accredited lab under the KDB 974614 D01 and is listed in the FCC Public Access Link (PAL) database, FCC Registration No. : 442868, the FCC Designation No. : CN1314. The lab has been recognized by Innovation, Science and Economic Development Canada to test to Canadian radio equipment requirements, the CAB identifier: CN0123. Declarations China Certification ICT Co., Ltd (Dongguan) is not responsible for the authenticity of any test data provided by the applicant. Data included from the applicant that may affect test results are marked with a triangle symbol “▲”. Customer model name, addresses, names, trademarks etc. are not considered data. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report cannot be reproduced except in full, without prior written approval of the Company. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. This report may contain data that are not covered by the accreditation scope and shall be marked with an asterisk “★”. China Certification ICT Co., Ltd (Dongguan) Report No.: CR22080042-00A Page 3 of 43 CONTENTS T EST FACILITY .......................................................................................................................................... 2 DECLARATIONS .......................................................................................................................................... 2 DOCUMENT REVISION HISTORY .......................................................................................... 5 1. GENERAL INFORMATION .................................................................................................... 6 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ....................................................... 6 1.2 DESCRIPTION OF TEST CONFIGURATION ........................................................................................... 7 1.2.2 Support Equipment List and Details .............................................................................................................. 7 1.2.3 Support Cable List and Details ...................................................................................................................... 7 1.2.4 Block Diagram of Test Setup ......................................................................................................................... 8 1.3 MEASUREMENT UNCERTAINTY .......................................................................................................... 9 2. SUMMARY OF TEST RESULTS .......................................................................................... 10 3. REQUIREMENTS AND TEST PROCEDURES .................................................................. 11 3.1 AC LINE CONDUCTED EMISSIONS .................................................................................................... 11 3.1.1 Applicable Standard ..................................................................................................................................... 11 3.1.2 EUT Setup.................................................................................................................................................... 12 3.1.3 EMI Test Receiver Setup ............................................................................................................................. 12 3.1.4 Test Procedure ............................................................................................................................................. 13 3.1.5 Corrected Amplitude & Margin Calculation ................................................................................................ 13 3.2 RADIATION SPURIOUS EMISSIONS .................................................................................................... 14 3.2.1 Applicable Standard ..................................................................................................................................... 14 3.2.2 EUT Setup.................................................................................................................................................... 14 3.2.3 EMI Test Receiver & Spectrum Analyzer Setup ......................................................................................... 15 3.2.4 Test Procedure ............................................................................................................................................. 15 3.2.5 Corrected Amplitude & Margin Calculation ................................................................................................ 15 3.3 6 DB EMISSION BANDWIDTH: ............................................................................................................ 16 3.3.1 Applicable Standard ..................................................................................................................................... 16 3.3.2…

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EXHIBIT D - TEST SETUP PHOTOGRAPHS Conducted Emissions Front View Conducted Emissions Side View Radiated Emission Below 1GHz View Radiated Emission Above 1GHz View