之前有網友解釋過了，小熊講不一樣的FUTIJSU 29LV160TE芯片，其實只是儲存韌體的FLASH EEPROM，下面的數字只是生產週期，兩顆晶片的功能是一模一樣的。

至於其他的PNX7850、TZA1039HL、TZA1042HL是一組的，不是081用TZA1039HL、061用TZA1042HL，而是061和081是用同一組(PNX7850、TZA1039HL、TZA1042HL)的。

有興趣的人可去看philips的原廠文件:
http://www.semiconductors.philips.c...t/file_902.html
http://www.semiconductors.philips.c...dex.html#design

Nexperia PNX7850 DVD+RW processor
The PNX7850 processor performs the encoding and decoding functions required for very fast write and read performance in a DVD recorder. Integrating a 32-bit MIPS RISC processor, a servo DSP, a buffer manager with UDMA66 ATAPI host interface, and an audio processor, the PNX7850 delivers advanced functionality in a single-chip format. Extensive hardware automation reduces processor load.

TZA1047 analog processor
The TZA1047 is a flexible analog processor for use in the optical bit engine of a DVD/CD-recordable system. It provides RF functionality, a read laser controller, and a sophisticated servo processor. High integration reduces chip count, and lowers overall system cost. Programmable options let the designer fine-tune performance.

TZA1042 laser power controller
The TZA1042 is a laser power controller for DVD/CD recordable systems. It manages operation of the laser diode driver IC, and controls the writing process. The TZA1042 supports real-time compensation for fingerprints and other defects. On-chip features and programming options improve performance in high-speed drives.


網兄mzlin的另一篇
http://www.pcdvd.com.tw/showthread....ghlight=PNX7850

對Benq有與趣的人可以去了解一下他用的Solution哦
http://www.semiconductors.philips.c...gine/index.html

我比較好奇的是800a用的4個重要零組件在 Key features並不能支援DVD-R/-RW
當初philips在設計這三個IC一個雷射頭時是否就只考慮DVD+R/+RW,還是有留後路給DVD-R/-RW??讓韌體能去改變它當初在開IC時的Key features.

Nexperia PNX7850 processor,
(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.)
Delivers industry-leading performance as part of the Philips
DVD+RW chipset:
- Writes at 8x DVD+R, 4x DVD+RW, 32x CD-R,
and 24x CD-RW
- Reads at 16x DVD-ROM,DVD+R,DVD+RW,DVD-R,DVD-RW;
and 48x CD-ROM, CD-DA, CD-R, CD-RW

TZA1047 analog processor,
On its own, the TZA1047 can support write performance of 12x
DVD+R/+RW and 48x CD,and read performance of 20x DVD and 56x CD.
When configured with the Philips DVD+RW chipset, the TZA1047
contributes to write performance of 8x DVD+R, 4x DVD+RW, 32x CD-R,
and 24x CD-RW, and read performance of 16x DVD-ROM and 48x CD.

TZA1042 laser power controller,
TZA1042 can support read/write speeds of up to 20x DVD and
56x CD.When configured with the Philips DVD+RW chipset, the
TZA1042 contributes to write performance of 8x DVD+R, 4x
DVD+RW, 32x CD-R, and 24x CD-RW, and read performance of
16x DVD-ROM and 48x CD.

OPU66.20, a Philips-manufactured optical pickup unit (OPU)
Designed and manufactured by Philips, the OPU66.20 is an optical
pickup unit (OPU) for DVD recorders recommended for use with
the Philips DVD+RW chipset. It delivers industry-leading speed
including write performance of 4x DVD+R/+RW, 32x CD-R, and 12x
CD-RW, and read performance of 16x DVD-ROM and 40x CD. The
OPU66.20 is compatible with the DVD+RW standard, and supports
other DVD and CD formats, including DVD-R/RW and DVD-ROM,
as well as CD-ROM and CD-DA.