PNX7850 Nexperia ATAPI DVD Recording Engine

The Nexperia PNX7850 processor handles all of the encoding and decoding functions required for industry-leading write and read performance in DVD/CD recorders. In addition to a 32-bit MIPS RISC core, it integrates channel and data-block codecs, a servo DSP a Buffer manager, and an Audio Processor On its own, the PNX7850 CAN support write speeds of 8x DVD and 48x CD (early versions support 4x DVD), and read speeds of 16x DVD and 56x CD. When configured with the Philips DVD+RW chipset, the PNX7850 contributes to write performance of 8x DVD+R, 4x DVD+RW, 32x CD-R, and 12x CD-RW, and read performance of 16x DVD-ROM and 48x CD. Exceptional write speeds are due in part to a technology, developed in partnership with Intersil, that moves the writestrategy function off-chip onto the optical pickup unit (OPU). Designed in accordance with the DVD+RW standard, the PNX7850 is compatible with other DVD and CD formats, including DVD-R/RW and DVD-ROM, as well as CD-ROM and CD-DA. It is manufactured using an advanced 0.18-m CMOS process that reduces core voltage and power consumption. For portable applications, the PNX7850 offers Clock gating and enhanced power-down features.
By NXP Semiconductors
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