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PDF PNX7850 Data sheet ( Hoja de datos )
| Número de pieza | PNX7850 | |
| Descripción | High Speed CD-RAM Processor | |
| Fabricantes | Bexperia | |
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Nexperia PNX7850
High-speed DVD+R/RW and CD-R/RW
processor for PC-hosted recorders
The Philips Nexperia PNX7850 is a highly integrated,
multi-functional processor for high-speed DVD/CD
recorders. As part of the Philips DVD+RW chipset, the
PNX7850 brings industry-leading speed and accuracy to
computing applications.
Semiconductors
Key features
> Delivers industry-leading performance as part of the Philips
DVD+RW chipset:
- Writes 8x DVD+R, 4x DVD+RW, 32x CD-R, and 12x CD-RW
- Reads 16x DVD-ROM, DVD+R, DVD+RW, DVD-R, DVD-RW;
and 48x CD-ROM, CD-DA, CD-R, CD-RW
> Integrated functions for lower cost, higher performance
- Channel and data-block codecs
- Buffer manager with ATAPI host interface
- Audio processor for digital audio data
- 32-bit MIPS processor with embedded memory
- Servo DSP with acceleration modules
- Analog front-end
> Power management features for portable applications
> 240-pin PGBA package
> Complete reference design with modular software available
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 con-
tributes 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 tech-
nology, developed in partnership with Intersil, that moves the write-
strategy 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 manu-
factured using an advanced 0.18-µm CMOS process that reduces
core voltage and power consumption. For portable applications, the
PNX7850 offers clock gating and enhanced power-down features.
Target applications
The PNX7850 is designed for use in desktop, notebook, and laptop
PCs that integrate a DVD recorder. It can also be used in desktop
or portable PC peripherals.Wide interoperability with other stan-
dards makes it especially suited to double-writer and combination
applications.
Functional overview
The PNX7850 is a highly integrated device that includes channel
and data-block codecs, a buffer manager, an audio processor, a
32-bit MIPS processor, and a servo DSP.
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| PDF Descargar | [ Datasheet PNX7850.PDF ] | |
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