User's Manual

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OCT 29, 2020

USER MANUAL

WSB520S

Wireless Audio Transceiver, 5GHz

24.0x40.4x3.2[mm], 24pin FFC

Version: 01

1. General Specification

The WSB520S 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): 24.0 (W) X 40.4 (L) X 3.2 (H)

- PCB size (mm): 24.3 (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 : 5 154.35 MHz ~ 5 248.35 MHz, 5 727.35 MHz ~ 5 847.35 MHz

• 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

Summary of content (17 pages)

PAGE 1
USER MANUAL WSB520S Wireless Audio Transceiver, 5GHz 24.0x40.4x3.2[mm], 24pin FFC Version: 01 User Manual 1. General Specification The WSB520S is optimized for 5GHz wireless audio transceiver module that optimized for building point to multipoint 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.
PAGE 2
USER MANUAL Wireless Audio Transceiver, 5GHz WSB520S 24.0x40.4x3.2[mm], 24pin FFC Version: 01 2.
PAGE 3
USER MANUAL WSB520S Wireless Audio Transceiver, 5GHz 24.0x40.4x3.2[mm], 24pin FFC Version: 01 3. Module Connection The WSB520S has a 24pin FFC connector, and the connection with the external device should use FFC cable.
PAGE 4
USER MANUAL Wireless Audio Transceiver, 5GHz WSB520S 24.0x40.4x3.2[mm], 24pin FFC Version: 01 4. Applications The WSB520S 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.
PAGE 5
USER MANUAL WSB520S Wireless Audio Transceiver, 5GHz 24.0x40.4x3.2[mm], 24pin FFC Version: 01 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.
PAGE 6
USER MANUAL WSB520S Wireless Audio Transceiver, 5GHz 24.0x40.4x3.2[mm], 24pin FFC Version: 01 5-3. Electrical Characteristics – DC Typical specifications at TA = 25°C, VDD = 5V PARAMETER CONDITION MIN TYP Continuous TX (TX Module) 400 Linked status for TX 57 Searching for TX 86 Continuous RX 26 Linked status for RX 26 Searching for RX 75 MAX UNIT mA Current 0.6 Input Voltage Logic Low, VIL CMOS I/O Logic Levels – VDDIO 3.3V Input Voltage Logic High, VIH VDDIO 0.6V V 0.
PAGE 7
USER MANUAL Wireless Audio Transceiver, 5GHz WSB520S 24.0x40.4x3.2[mm], 24pin FFC Version: 01 5-5. Electrical Characteristics – RF PLL Operating Conditions: TA = -5°C to +40 °C, RF Freq = 5150~5250/5725‐5875MHz, measured to the RF conducted ports. Typical specifications at TA = 25°C, VDD = 5V PARAMETER CONDITION MIN TYP MAX Low band 5154.35 5248.35 High band 5727.35 5847.
PAGE 8
USER MANUAL WSB520S Wireless Audio Transceiver, 5GHz 24.0x40.4x3.2[mm], 24pin FFC Version: 01 5-6. Electrical Characteristics – Audio C/CS PARAMETER Audio Frequency Range CONDITION +/- 1dB MIN TYP 20 Audio Interface Resolution MAX UNIT 20,000 Hz 24 bit OTA Dynamic Range 120 dB OTA Signal to Noise Ratio 120 dB 5-7. I2S Communication Interface Timing I2S Interface Timing PARAMETER MIN TYP MAX UNIT VL Low voltage level -0.3 0 0.4 V VL High voltage level 2.7 3.3 3.
PAGE 9
USER MANUAL WSB520S Wireless Audio Transceiver, 5GHz 24.0x40.4x3.2[mm], 24pin FFC Version: 01 5-8. I2C Slave Communication Interface Timing I2C Slave Interface Timing (Fast-Mode) Parameter MIN MAX UNIT VIL Low level input voltage 0.3 0.6 V VIH High level input voltage 2.7 3.6 V 0 0.
PAGE 10
USER MANUAL Wireless Audio Transceiver, 5GHz WSB520S 24.0x40.4x3.2[mm], 24pin FFC Version: 01 6. Certificate Statement FCC MODULAR APPROVAL INFORMATION EXAMPLES for Manual 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. (2) This device must accept any interference received, including interference that may cause undesired operation.
PAGE 11
USER MANUAL Wireless Audio Transceiver, 5GHz WSB520S 24.0x40.4x3.2[mm], 24pin FFC Version: 01 OEM INTEGRATION INSTRUCTIONS: This device is intended only for OEM integrators under the following conditions: The module must be installed in the host equipment such that 20 cm is maintained between the antenna and users, and the transmitter module may not be co-located with any other transmitter or antenna.
PAGE 12
USER MANUAL Wireless Audio Transceiver, 5GHz WSB520S 24.0x40.4x3.2[mm], 24pin FFC Version: 01 FCC MODULAR APPROVAL INFORMATION EXAMPLES for Manual 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. (2) This device must accept any interference received, including interference that may cause undesired operation.
PAGE 13
USER MANUAL Wireless Audio Transceiver, 5GHz WSB520S 24.0x40.4x3.2[mm], 24pin FFC Version: 01 Information for OEM Integrator This device is intended only for OEM integrators under the following conditions: 1) The antenna must be installed such that 20 cm is maintained between the antenna and users, and 2) The transmitter module may not be co-located with any other transmitter or antenna. End product labelling The label for end product must include “Contains FCC ID: A3LWSB520S”.
PAGE 14
USER MANUAL Wireless Audio Transceiver, 5GHz WSB520S 24.0x40.4x3.2[mm], 24pin FFC Version: 01 Requirement per KDB996369 D03 2.2 List of applicable FCC rules List the FCC rules that are applicable to the modular transmitter. These are the rules that specifically establish the bands of operation, the power, spurious emissions, and operating fundamental frequencies.
PAGE 15
USER MANUAL Wireless Audio Transceiver, 5GHz WSB520S 24.0x40.4x3.2[mm], 24pin FFC Version: 01 2.5 Trace antenna designs For a modular transmitter with trace antenna designs, see the guidance in Question 11 of KDB Publication 996369 D02 FAQ – Modules for Micro-Strip Antennas and traces. The integration information shall include for the TCB review the integration instructions for the following aspects: layout of trace design, parts list (BOM), antenna, connectors, and isolation requirements.
PAGE 16
USER MANUAL Wireless Audio Transceiver, 5GHz WSB520S 24.0x40.4x3.2[mm], 24pin FFC Version: 01 2.7 Antennas A list of antennas included in the application for certification must be provided in the instructions. For modular transmitters approved as limited modules, all applicable professional installer instructions must be included as part of the information to the host product manufacturer. The antenna list shall also identify the antenna types (monopole, PIFA, dipole, etc.
PAGE 17
USER MANUAL Wireless Audio Transceiver, 5GHz WSB520S 24.0x40.4x3.2[mm], 24pin FFC Version: 01 2.10 Additional testing, Part 15 Subpart B disclaimer The grantee should include a statement that the modular transmitter is only FCC authorized for the specific rule parts (i.e., FCC transmitter rules) listed on the grant, and that the host product manufacturer is responsible for compliance to any other FCC rules that apply to the host not covered by the modular transmitter grant of certification.