SAA7818HL

SAA7818HL contains an embedded microcontroller which can operate as a 33 or 67 MHz equivalent 80C51 and interfaces to the channel decoder, block decoder and servo processor. New features enable superior playability in both CD and DVD modes. The block decoder SAA7818HL has an embedded DVD video authentication module and supports up to 64 Mbit of external SDRAM memory.

The data of SAA7818HL can be fed out in a number of different configurations including I2S-bus, ATAPI and UDE. SAA7818HL also includes the option to bypass the external memory altogether, creating a bufferless ATAPI or UDE data path solution. The channel decoder has selectable differential and single-ended HF inputs, which are compatible with the TZA1033 and TZA1035 devices.

There is an option to output the data as raw I2S-bus via some programmable data I/O pins. With increased tap setting for the PLL equalizer compared with the SAA7816 device and enhanced playability of black dots and scratches, overall playability has been greatly improved. There are also benefits about SAA7818HL due to a new defect detector that allows holding the HF PLL frequency and slicer settings over a defect. These, together with an additional limit equalizer lead to improved tolerance to continuity errors in DVD playback mode.

There are also two extra motor gain settings of SAA7818HL compared to the SAA7816 device and support for copyright protection strategies in games applications. The servo processor of SAA7818HL has been upgraded to include an improved defect detection and handling process, an integrated envelope detection circuit and also DC offset compensation on the diode inputs.