Broad Profile support

As standard, RoadTunes supports a wide variety of application software Profiles, including A2DP, AVRCP, HFP, PBAP, DUN and SPP. This allows it to provide Bluetooth wireless connectivity in a very wide variety of in-vehicle applications.

Even though this Bluetooth solution is based on a single, low-cost chip, RoadTunes implementations will typically support at least three Profiles simultaneously.  In phone applications for example, RoadTunes may be configured to access a variety of functions including last number redial, mute, voice dialling, phone book and call history download (SIM/Memory). RoadTunes allows the simultaneous pairing of up to eight Bluetooth devices, and can control functions through voice prompts.

RoadTunes' Bluetooth application software compatibility*:

Speech: Hands-Free or Headset

• Three-way call, last number redial, Memory dial, Mute, DTMF tones, Voice dial

Music Streaming and Receiving: A2DP/AVRCP

• Source or Sink, controller or target

Phone book: PBAP

• Phonebook/call history download (SIM / memory), Browsing, VCard 2.1/3.0

Internet Access: DUN

• Updates via the internet, Surfing the Web, General Internet Access

Peripheral Access: SPP

• From keyboard, remote controls and other accessories to host application

Other functions

The built-in DSP core comes with CSR's own CVC echo and noise cancellation software. However, a wide variety of optional third-party software is available for the open core, including text to speech support. DFU support additionally allows the RoadTunes firmware to be upgraded in the field*.

* MAP and AVRCP 1.4 are in development