Music mobile phones

Friday, December 26th 2008 - 14:55 CET - Comments: 0

O ki Electric Industry announced it will start volume shipment of a headphone amplifier LSI, the Oki ML2650, from December 2008. This new LSI enables battery-powered mobile phones to play back music with low-power consumption, which is achieved by a highly efficient D-class amplifier equipped with a 64KB SRAM that temporarily saves music data. In addition, the LSI comes in an ultra small package size of 2.54mm x 2.70mm.

 

 

Music enabled mobile phones
Portable music players and music enabled mobile phones with music playback function are becoming complex, requiring CPUs to offer higher performance. However, when using such high-performance CPUs, a complex software process is necessary to reduce power consumption. Therefore, developers have been looking for an easier way to achieve low power consumption in such devices. One way to control power consumption is by pacing operation of the CPU, which is a method to forward music data processed on the CPU to RAM within the device, and put the CPU to rest or standby.

 

Longer music playback function on mobile phones
"OKI developed the ML2650, which includes a D-class headphone amplifier to connect with the external CPU, a 64KB SRAM, and a 16 bit stereo DA converter, all on a single chip that will help to reduce load from the CPU," said Hiroshi Enomoto, President of Silicon Solutions Company at OKI. "This LSI will enable mobile device / phone manufacturers to easily extend the music playback time. In addition, with the ultra small package size at 2.54 mm x 2.70 mm, it will contribute in smaller devices as it significantly reduces the packaging space." Going forward, OKI will expands its sound LSI product line-up, and develop and sell LSIs that can playback rich sound through various applications.

• Samsung music phones
• Sony-Ericsson music phones
• Nokia music phones
• LG music phones