WM8998

WM8998 High Performance Audio Hub CODEC DESCRIPTION The WM8998 is a highly-integrated low-power audio hub CODEC for smartphones, tablets and other portable audio devices. It is optimised for use in multimedia devices where the audio processing requirements are implemented on the host applications processor. The WM8998 digital core combines fixed-function signal processing blocks with a fully-flexible, all-digital audio mixing and routing engine, for extensive use-case flexibility. Signal processing blocks include filters, EQ, dynamics processors and sample rate converters. A SLIMbus® interface supports multi-channel audio paths and host control register access. Multiple sample rates are supported concurrently via the SLIMbus interface. Three further digital audio interfaces are provided, each supporting a wide range of standard audio sample rates and serial interface formats. Automatic sample rate detection enables seamless wideband/narrowband voice call handover. The stereo headphone driver provides ground-referenced outputs, with noise levels as low as 1μVRMS for hi-fi quality line or headphone output. The CODEC also features a stereo line output, stereo 2W Class-D speaker outputs, a dedicated BTL earpiece output, PDM for external speaker amplifiers, and an IEC-60958-3 compatible S/PDIF transmitter. A signal generator for controlling haptics devices is included; vibe actuators can connect directly to the ClassD speaker output, or via an external driver on the PDM output i...