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The J1 core cell is a remarkably small and efficient audio decoder that manages Dolby Digital, AC-3, and MPEG audio decompression. With a design that occupies only 1.0 sqmm of silicon area using 0.18u CMOS technology, it delivers a robust solution for decoding 5.1 channel dolby bitstreams and supports data rates up to 640kb/s. The J1 produces high-quality stereo outputs, both normal and Pro-Logic compatible, from Dolby Digital and MPEG-encoded audio, ideal for set-top boxes and DVD applications.
The JDA1 is a versatile DAC core cell, designed for high-fidelity audio processing. It integrates a delta-sigma DAC with a PLL, eliminating the need for external clock generation by deriving all necessary sampling clocks from a 27MHz input. The JDA1 processes digital PCM inputs from 16 to 24 bits wide, supporting various standard and custom audio sample rates, including 96kHz. Its efficient silicon use requires just 0.3 to 0.4 sqmm, adapting seamlessly to scaling digital IC technologies.
The J5 is a digital processor designed to perform advanced 3-D audio virtualization. Handling both TruSurround and SRS 3D algorithms, it allows users to enjoy a full surround sound feel with just two speakers by implementing complex channel downmixing and spatial audio effects. The J5 is economically designed, needing less than 0.16 sqmm of silicon, making it efficient and cost-effective for high-density audio systems.
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