Product category:
Analogue and Mixed Signal ICs
News Release from: Rohm Electronics | Subject: BU8899GU
Edited by the Electronicstalk Editorial
Team on 29 April 2004
Melody chip aims for Java applications
Rohm has further extended its family of compact and highly integrated melody sound source ICs for mobile phones with its first Java-compliant device.
Rohm has further extended its family of compact and highly integrated melody sound source ICs for mobile phones with its first Java-compliant device By combining advanced polyphonic sound output with full Java compliance, the BU8899GU allows designers to rapidly implement mobile phone and PDA designs that are optimised for high-performance gaming and other Java-based applications
This article was originally published on Electronicstalk on 7 Feb 2001 at 8.00am (UK)
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The BU8899GU is a stereo melody source IC offering 64 polyphonic tones, 47 drum set sounds, 15 electric drum set sounds and 32 effect sounds.
Up to eight user-customised sounds can also be created.
A high sampling rate of 44.1kHz ensures high quality sound output, while the combination of features provides a single-chip solution for ring tones, voice, music, gaming and all other sound output.
Rohm's new IC offers simultaneous output of up to four different tunes and supports real-time modification of tempo, key and volume.
This capability makes the IC ideal for providing background music, sound effects and the multiple sound levels demanded by Java-based gaming applications.
In addition, built-in 3-channel LED and vibration control functionality simplifies synchronisation of these functions with songs, ring tones, and other audio outputs Offering both stereo and monaural operating modes, the BU8899GU provides 12bit pitch bending and modulation support, and incorporates a three-channel equaliser for bass and mid-range tones.
A 3D sound function provides 15 types of reverb mode, including "reverb off".
The new IC can be controlled via a serial or parallel interface, with ADPCM and integrated FIFO functions minimising the load on the host CPU.
Standard format or IIS format digital outputs are supported.
A standby mode and a function that reduces power based on the number of tones being used contributes to extended battery life in portable equipment.
Despite its high level of integration, the Rohm BU8899GU is supplied in a compact BGA package with a footprint of just 5.1mm2.
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