A3LWSA520SAudio Transceiver

USER MANUAL WSA520S Wireless Audio Transceiver, 5GHz 30.0x40.4x3.2[mm], 24pin FFC Version: 01 1 /17 OCT 29, 2020 User Manual 1. General Specification The WSA520S is optimized for 5GHz wireless audio transceiver module that optimized for building point to multi- point digital wireless audio solutions (such as wireless subwoofers and wireless rear speakers and in-home theater system). This wireless audio module provides a highly-integrated and flexible wireless audio solution based on the SKY76303 SoC. The module contains all the necessary radio transceiver and digital baseband circuitry to form a complete digital wireless node without the need for external processing. The module can operate in both the lower and upper bands of the 5 GHz spectrum, enabling worldwide coverage. The module contains all the necessary power management and analog circuitry needed to operate the chip. The chip is powered from a +5 V supply input (powering the internal +3.3 V output LDO) The RF section and wireless protocol of this module has been certified globally, including North America, Europe, China, Japan and Korea. Features:  Device Type : Wireless Audio module  Wireless : SRD (Short-Range-Device) using 5GHz ISM band  Product Size - Module Size (mm): 30.0 (W) X 40.4 (L) X 3.2 (H) - PCB size (mm): 30.3 (W) X 40.4 (L) x 1.2 (H) - Shield can (mm): 20.5 (W) X 22.5 (L) X 2.0(H) - Antenna Type : PCB Printed Antenna  Complete I2S to I2S audio communication system - 24bit I2S Audio interface and 120dB SNR Over-The-Air Link  Frequency range : 5725-5.875 GHz  Low, fixed latency (typically less then 20ms)  3Mbps or 6Mbps OTA data rate  Multiple OTA audio configurations  Forward error correction coding, error detection, and audio-specific error concealment  Auto-search/sync and dynamic channel selection  Capability to detect and avoid wideband interferences such as 5GHz band WLAN  Sample rate converter: Support for 32 - 96kHz input sample rates  Dual printed PCB diversity antennas for multipath and fading migrations  Control interfaces: I2C  Multiple GPIOs  Dual printed PCB diversity antennas for multipath and fading mitigation Applications:  Soundbar with Wireless Subwoofer or/and Wireless Surround Speakers  Home theater Wireless speaker USER MANUAL WSA520S Wireless Audio Transceiver, 5GHz 30.0x40.4x3.2[mm], 24pin FFC Version: 01 2 /17 OCT 29, 2020 2. Module Identification The hardware for the audio input (transmit) and audio output (receive) versions of the module is identical and only the firmware loaded onto the module determines its function. The distinction according to the module's function is to be identified by the module's label color and code name. TX RX-Woofer RX-Rear The module’s label displays the following information: USER MANUAL WSA520S Wireless Audio Transceiver, 5GHz 30.0x40.4x3.2[mm], 24pin FFC Version: 01 3 /17 OCT 29, 2020 3. Module Connection The WSA520S has a 24pin FFC connector, and the connection with the external device should use FFC cable.  Pin assignment (24pin I/O connector) No Pin Name I/O WSA520S-TX WSA520S-RX 1 VDD_5V PWR +5V Supply Input +5V Supply Input 2 VDD_5V PWR +5V Supply Input +5V Supply Input 3 GPIO5/I2CS_SCL I/O I2C slave serial data PWM_RST 4 GPIO4/I2CS_SDA I/O I2C slave serial clock E_MUTE 5 GPIO19 I/O P_ON 6 RESET I/O RESET MICOM_RST 7 GPIO20 I/O MUX_Control 8 GPIO21 I/O INT INT 9 GPIO17/I2CM_SCL I/O I2C master serial data 10 GPIO16/I2CM_SDA I/O I2C master serial clock 11 MCLK I/O Master clock Master clock 12 GND GND GND GND 13 BCK I/O bit clock bit clock 14 LRCK I/O L/R clock L/R clock 15 GPIO25 I/O 16 I2S_DAT0 I/O I2S port0 audio data I2S port0 audio data 17 GPIO26 I/O SPK_SEL SPK_SEL 18 I2S_DAT1 I/O I2S port1 audio data I2S port1 audio data 19 GPIO15 I/O DSP_RST 20 GPIO18 I/O ID_SET 21 GPIO2 I/O RED_LED 22 GPIO3 I/O Blue LED 23 GPIO24 I/O AMP_Shutdown 24 GND GND Ground Ground Pin #1 Pin #24 USER MANUAL WSA520S Wireless Audio Transceiver, 5GHz 30.0x40.4x3.2[mm], 24pin FFC Version: 01 4 /17 OCT 29, 2020 4. Applications The WSA520S module is available in two variations; digital input transmitter or digital output receiver. There are two available I2S digital audio data inputs/outputs, each of these can be configured to operate as either a master or a slave – depending on the application, the I2S ports can operate simultaneously as either inputs or outputs. When configured as slaves, the I2S inputs/outputs can be independently clocked by up to two external masters. In addition, MCLK can be output from the module to provide a reference clock source to an external ADC or DAC. MCLK can also be input to the module to provide a reference clock from an external source. USER MANUAL WSA520S Wireless Audio Transceiver, 5GHz 30.0x40.4x3.2[mm], 24pin FFC Version: 01 5 /17 OCT 29, 2020 5. Electrical Specifications 5-1. Absolute Maximum Ratings Absolute Maximum Ratings (AMR) are stress ratings only. AMR corresponds to the maximum value that can be applied without leading to instantaneous or very short-term unrecoverable hard failure (destructive breakdown). Stresses beyond those listed under AMR may cause permanent damage to the device. Functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Range” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may adversely affect device reliability. Device functional operating limits and guaranteed performance specifications are given under Electrical Characteristics at the test conditions specified. CONDITION MIN MAX +5 Supply Voltage Input -0.3V 6.0V Input Voltage Range – Digital Inputs -0.3V 3.6V Input Voltage Range – Analog Inputs -0.3V 3.6V Operating Temperature -5ºC +40ºC Storage Temperature -40ºC +85ºC Static Discharge Voltage* +/-30KV Notes; * System level ESD : IEC 61000-4-2; C = 150pF, R = 330 Ω 5-2. Recommended operating Range PARAMETER MIN TYP MAX UNIT VDD, +5V Supply Input voltage 4.5 5 5.5 V Operating Temperature -5ºC +…

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Letter of Authorization Company : Samsung Electronics Co Ltd Address : 19 Chapin Rd., Building D, Pine Brook, New Jersey, 07058, United States Product Name : Audio Transceiver Model Number : WSA520S FCC Identifier : A3LWSA520S We authorize MiCOM Labs Inc, 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the above named equipment. Any individual within MiCOM Labs is authorized to act on our behalf and take action on the application. We declare that MiCOM Labs Inc, 575 Boulder Court, Pleasanton, California 94566, USA, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Name: Jenni Chun Date: November 12, 2020 Title: General Manager Signature of applicant:

Samsung Electronics Co Ltd FCC – Modular Approval Request Rev 2.0 Modular Transmitter Approval Request Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 Company name: Samsung Electronics Co Ltd FCC ID: A3LWSA520S Gentlemen, In accordance with 47CFR 15.212 Modular Transmitters and KDB 996369 D01 ‘Module Certification Guide v01r04’. FCC ID: A3LWSA520S has been examined against the following requirements. Requirement per 15.212 and KDB 996369 D01 ‘Modular Certification Guide v01r04 Explanation from Grantee (do not write yes/no, but explain why product complies/how it is achieved) The radio elements must have the radio frequency circuitry shielded. Physical components and tuning capacitor(s) may be located external to the shield, but must be on the module assembly Yes The radio portion of the module has been shielded, Refer to the external photos. The module must have buffered modulation/data inputs to ensure that the device will comply with Part 15 requirements with any type of input signal Yes The module has buffered modulation/data inputs. Refer to the Block Diagram. The module must contain power supply regulation on the module Yes This module is equipped internal power regulators. Refer to the Block Diagram. The module must contain a permanently attached antenna, or contain a unique antenna connector, and be marketed and operated only with specific antenna(s), per Sections 15.203, 15.204(b), 15.204(c), 15.212(a), 2.929(b) Yes This module is equipped with an onboard Chip Antenna. Refer to the internal photo The module must demonstrate compliance in a stand-alone configuration Yes This module was tested in a stand-alone configuration. Refer to the test setup photos The module must be labelled with its permanently affixed FCC ID label, or use an electronic display (See KDB Publication 784748 about labelling requirements) Yes The module has its permanently affixed FCC ID label and the FCC ID label is shield cover. Refer to the FCC ID Label Location. The module must comply with all specific rules applicable to the transmitter including all the conditions provided in the integration instructions by the grantee Yes The module complies with all specific rules applicable to the transmitter. The module must comply with RF exposure requirements Yes Refer to the EMF Test Report. Name: Jenni Chun Date: November 12, 2020 Title: General Manager Signature of applicant:

Samsung Electronics Co Ltd Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: November 12, 2020 Subject; Request for Confidentiality FCC ID: A3LWSA520S To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Jenni Chun Title: General Manager

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Page 1 of 31 Report No.: OT-20N-RWD-035 It should not be reproduced except in full, without the written approval of ONETECH Corp. OTC-TRF-RF-001(0) ONETECH Corp.: 43-14, Jinsaegol-gil, Chowol-eup, Gwangju-si, Gyeonggi-do, 12735, Korea (TEL: 82-31-799-9500, FAX: 82-31-799-9599) ELECTROMAGNETIC EMISSION COMPLIANCE REPORT Test Report No. : OT-20N-RWD-035 Reception No. : 2010003943 Applicant : Samsung Electronics Co Ltd Address : 19 Chapin Rd., Building D, Pine Brook, New Jersey, 07058, United States Manufacturer : Samsung Electronics Co Ltd Address : 129, Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16677, Korea Type of Equipment : Audio Transceiver FCC ID : A3LWSA520S Model Name : WSA520S Multiple Model Name : N/A Serial number : N/A Total page of Report : 31 pages (including this page) Date of Incoming : October 27, 2020 Date of Issuing : November 11, 2020 SUMMARY The equipment complies with the requirements of FCC CFR 47 PART 15 SUBPART C Section 15.249 This test report contains only the result of a single test of the sample supplied for the examination. It is not a general valid assessment of the features of the respective products of the mass-production. Tested by Hyung-Kwon, Oh / Manager ONETECH Corp. Reviewed by Tae-Ho, Kim / Senior Manager ONETECH Corp. Approved by Ki-Hong, Nam / General Manager ONETECH Corp. Page 2 of 31 Report No.: OT-20N-RWD-035 It should not be reproduced except in full, without the written approval of ONETECH Corp. OTC-TRF-RF-001(0) ONETECH Corp.: 43-14, Jinsaegol-gil, Chowol-eup, Gwangju-si, Gyeonggi-do, 12735, Korea (TEL: 82-31-799-9500, FAX: 82-31-799-9599) CONTENTS Page 1. VERIFICATION OF COMPLIANCE ............................................................................................................................. 5 2. TEST SUMMARY .............................................................................................................................................................. 6 2.1 TEST ITEMS AND RESULTS ............................................................................................................................................. 6 2.2 RELATED SUBMITTAL(S) / GRANT(S) ............................................................................................................................ 6 2.3 PURPOSE OF THE TEST ................................................................................................................................................... 6 2.4 TEST METHODOLOGY .................................................................................................................................................... 6 2.5 TEST FACILITY ............................................................................................................................................................... 6 3. GENERAL INFORMATION ............................................................................................................................................ 7 3.1 PRODUCT DESCRIPTION ................................................................................................................................................. 7 3.2 ALTERNATIVE TYPE(S)/MODEL(S); ALSO COVERED BY THIS TEST REPORT. ................................................................ 7 4. EUT MODIFICATIONS .................................................................................................................................................... 7 5. SYSTEM TEST CONFIGURATION ............................................................................................................................... 8 5.1 JUSTIFICATION ............................................................................................................................................................... 8 5.2 PERIPHERAL EQUIPMENT .............................................................................................................................................. 8 5.3 MODE OF OPERATION DURING THE TEST ...................................................................................................................... 8 5.4 CONFIGURATION OF TEST SYSTEM ............................................................................................................................. 11 5.5 ANTENNA REQUIREMENT ............................................................................................................................................ 11 6. PRELIMINARY TEST .................................................................................................................................................... 11 6.1 AC POWER LINE CONDUCTED EMISSIONS TESTS ....................................................................................................... 11 6.2 RADIATED EMISSIONS TESTS....................................................................................................................................... 11 7. MINIMUM 20 DB BANDWIDTH .................................................................................................................................. 12 7.1 OPERATING ENVIRONMENT ......................................................................................................................................... 12 7.2 TEST SET-UP ................................................................................................................................................................. 12 7.3 TEST DATE ................................................................................................................................................................... 12 7.4 TEST DATA .................................................................................................................................................................... 13 8. RADIATED EMISSION TEST ....................................................................................................................................... 15 8.1 …

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