saa7817hl NXP Semiconductors, saa7817hl Datasheet - Page 4

• Manufacturer Part Number: saa7817hl
• Description: Saa7817hl Dvd And Cd Playback Ic
• Manufacturer: NXP Semiconductors

Philips Semiconductors
2003 Sep 23
Microcontroller interface:
– Embedded microcontroller can operate as
– Embedded co-processor for fast multiply, divide, shift
– Co-processor for MSF calculations
– Memory mapped interfaces to sub functions
– External microcontroller support
– Embedded SRAM: 1.5 kbytes Xdata, 512 bytes
– 4 banks; on Idata and registers, for better
– External flash EPROM programming support: serial
– Code space support up to 1 Mbyte through built-in
– Debug interface for embedded microcontroller.
Servo processor:
– Switched current Analog-to-Digital Converters
– Selectable servo error or servo diode inputs
– Focus and radial servo loops
– Automatic closed-loop gain control available for focus
– Built-in access procedure with fast track count input
– High-speed track crossing velocity measurement
– Special DVD track crossing support
– Fast radial brake circuitry
– Eight-to-Fourteen Modulation (EFM) actuator
– Sledge motor servo loop with enhanced PCS support
– Sledge stepper motor support
– Adaptive Repetitive Control (ARC)
– Debug interface for servo
– DC offset compensation for servo
– White and black dot defect detection and handling
– Integrated envelope detection.
Clock multiplier:
– On-chip clock multipliers allows the use of
DVD and CD playback IC
33 or 67 MHz equivalent 80C51
and normalize instructions; supported by C-compilers
Idata, 224 bytes data and registers
multi-tasking support
boot possible with empty flash EPROM and internal
program upload support
bank switching
(ADCs) for diode and error signal inputs
and radial loops
( 350 kHz) for CD and DVD
damping circuitry
8.4672 MHz crystal.
4
2
The SAA7817HL is a device for 6 DVD and 18 CD
playback applications.
This device 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 has an embedded DVD video
authentication module and supports up to 64 Mbit of
external SDRAM memory. The data can be fed out in a
number of different configurations including I
ATAPI and UDE. This device 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 I
data I/O pins. With increased tap setting for the PLL
equalizer compared with the SAA7812 device and
enhanced playability of black dots and scratches, overall
playability has been greatly improved. There are also
benefits 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
compared to the SAA7812 device and support for
copyright protection strategies in games applications.
The servo processor 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.
GENERAL DESCRIPTION
2
S-bus via some programmable
SAA7817HL
Product specification
2
S-bus,