Samsung WISP30 Users Manual

Wireless audio Module

Manual for 5GHz dual-band

Wireless Audio module

Samsung

Copyright notice

The information furnished herein by Samsung is proprietary and confidential and it shall not be
duplicated, published or disclosed to any third party in whole or in part without the prior written
consent of Samsung.

Version Number

Version No. Date Comments

1.0 2010.10.27 First issued

Revision History

Revision No. Date Comments

Version 1.0 Samsung Electronics page 1 of 8

Wireless audio Module

1. Introduction

This features an embedded 8052 MCU, new low-power modes and support for the 5 GHz dual-band RF

receivers. This supports up to 4 stereo audio streams and comes together with additional features such as: data

encryption, pairing functionality, bi-directional control data messages, full autonomy for receivers,
low-power audio snooze mode, WLAN detection and automatic frequency allocation. This module itself

provides the basic functions of audio processing and buffering, Data Link Layer and Physical Layer.

This enables the module to provide the digital interfaces on one side and the radio interfaces on the other side.
The core chipset is from STS, part number DARR 83. This application is designed for DVD/BD-HTS, and all
kinds of AV-R model.

2. Hardware Architecture:

2.1 Main Chipset Information
Item Vendor Part Number

BBIC STS DARR 83
RFIC Airoha AL 5230

2.2 Circuit Block Diagram

The major internal and external block diagram of Samsung 5GHz dual-band wireless audio module is
illustrated in Figure 1-1.

Figure 1-1 Samsung 5GHz dual-band wireless audio module block diagram and System Interface

2.3 Module output power information

- Module output power within filter

Class type TX power(typ.) Data rate

Class2 + 10dBm 22Mbps

Version 1.0 Samsung Electronics page 2 of 8

Wireless audio Module

3. Operational Description

Samsung wireless audio module is the 5GHz dual band RF Module that provide users of a wireless audio
system to connect to TV. This uses 5GHz RF 2 channels. (5.2GHz band (5180, 5210, 5240 MHz), 5.8GHz
band (5736, 5762, 5814MHz)) This enables a wide range of digital wireless audio applications. This
wireless audio technology has been known for its extreme wireless fidelity and audio quality. This module
further extends this offering a high level of integration resulting in a very low-cost complete wireless
system solution, without any sacrifice to the main technology drivers: Audio Quality and Wireless Fidelity.

- Time base of the RF frequency

For Zero IF and RF frequency, a crystal (44MHz) is a clock reference.

- Synthesizer

Synthesizer inside transceiver internal voltage controlled oscillator (VCO) provides the desired LO
Signal base on the phase-locked loop (PLL) with a relatively wide tuning range for this application.

- Transmission

In transmit mode, the audio engine controlled I2S, transforms the audio data into packetized digital IQ
signals. These are in turn pulse-shaped before conversion by a 10 bits 44Msps DAC to match to the analog
IQ inputs of the radio IC. The radio IC has programmable baseband filters to lower the RF spectrum side
lobes and to suppress the DAC image and the DAC spurious. The output power is programmable. A power
detector (PD_out) on the radio IC enables close-loop TX power control. The differential RF PA outputs are
connected via a balun and low pass filter to a transmit/receive switch with TX diversity option to the
antenna outputs.

- Receiver

In receive mode, antenna diversity is supported. The single ended output of the TR switch is connected
to the RF LNA input through a matching network. Filtering and amplification is all performed by the
radio transceiver. The gain setting is controlled by the BB. The analog IQ outputs are sampled by the
BB by its integrated 22 Msps dual channel 8bit ADC. This received data is demodulated and fed to the
audio processing engine controlling the I2S connections.

- Power Control Level

The integrated PA for this device can transmit at a maximum power of +4dBm for class 2 operation.

- Transmit/Receive Switch

DUT has Transmit/Receive Switch. End user can’t select any power setting.

3. Application for Wireless audio module

With bidirectional audio stream transmission feature and stream broadcast/Unicast mode supported, this module supports
unidirectional Audio Ack, NAck, Bidi rect ional Audio NAck, Headset Ack applications.

Version 1.0 Samsung Electronics page 3 of 8