Philips DWHP83 User Manual

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DWHP83 Module:

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1. Product Description

Rev 0.0

The DWHP83 Module is an OEM module (20x40
an uncompressed wireless digital audio transceiver operating in the
bands.

The wireless audio link supports up to 4 stereo audio streams and comes together with
additional features such as: data encryption, pairing functionality, bi-directional control
data messages, low power audio snooze mode, WLAN detection, Automatic Frequency
Allocation.

The DWHP83 chip itself provides the basic functions of Audio Processing and buffering,
Data Link Layer and Physical Layer. The module integrates all functionality for a wireless
digital audio connection, comprising:

DWHP83

 Wireless Audio Processor

5.8 GHz RF Transceiver


 Embedded Antennas
 Digital audio interfaces (I2S and/or S/PDIF)

 I2C control interface
 26 pins header connector for power, digital audio and control interface and GPIOs
 Built-in 1MB SPI interface Flash

mm)

5.8GHz

2.

Description of operation

2.1.

Operating Conditions

Symbol Parameter Min. Typ Max Unit

VCC Supply Voltage - 3.3 - V

Tamb Operating Temperature -10 25 60 °C

Note: Regulated 3.3V power from FFC Interface

Rev 0.0

2.2.

RF Information

Parameter Value Unit

RF Frequency range

Note: Country/ Region dependent

2.3.

Receive mode

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 22Msps dual channel 8bit ADC. This received data is
demodulated and fed to the audio processing engine controlling the audio function.

2.4.

Transmit mode

In transmit mode, the audio engine transforms the audio data into packetized digital IQ signals. These
are in turn pulse-shaped before conversion by a 10bits 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.

5725 - 5875

MHz