Cirrus Logic WM8946ECS/R

The WM8946 is a highly integrated low power hi-fi CODEC designed for portable devices such as digital still cameras.

• Up to 6 analogue inputs may be connected; a 2-channel digital microphone interface is also provided.
• Flexible output mixing options support single-ended and differential configurations, with outputs derived from the digital audio paths or from analogue bypass paths.
• Twin stereo outputs or stereo line and mono BTL headphone/speaker drive may be supported.
• Flexible digital mixing and powerful DSP functions are available.
• Programmable filters and other processes may be applied to the ADC or DAC signal paths.
• The DSP functions include 3D-stereo enhancement, 5 notch filters, 5-band EQ, dynamic range control and the ReTune™ feature.
• The ReTune™ feature is a sophisticated digital filter that can compensate for imperfect characteristics of the housing, loudspeaker or microphone components in an application.
• The ReTune™ algorithm can provide acoustic equalisation and selective phase (delay) control of specific frequency bands.
• The WM8946 is controlled via a I2C or SPI interface.
• Additional functions include Digital beep generator, Video buffer, programmable GPIO functions, Frequency Locked Loop (FLL) for flexible clocking support and integrated LDO for low noise supply regulation.
• The WM8946 is supplied in 36-ball W-CSP package, ideal for portable systems.
• 3D-stereo enhancement
• 5-notch filters
• 5-band equalizer (EQ)
• ReTune™ parametric filter
• Dynamic range control and noise gate
• Low-pass/High-pass filters
• Direct Form 1 (DF1) programmable digital filter
• Digital beep generator
• 4 analogue audio outputs
• Stereo line output
• Mono BTL headphone/speaker output driver
• I2S digital audio interface - sample rates 8kHz to 48kHz
• Frequency Locked Loop (FLL) frequency conversion / filter
• Video buffer function
• Integrated LDO low-noise voltage regulator
• 36-ball W-CSP package (2.97×3.07×0.7mm, 0.5mm pitch)

• Digital Still Cameras (DSC)
• Multimedia phones