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1. G ENERAL DESCRIPTION
1.1 ZR36768
The ZR36768 Disc Loader Controller and Decoder Device can control disc loaders and r\
ead
bitstreams using the following media: DVD -ROM, DVDRW, CD -DA, CD -ROM, CD- R and CD-R/W
discs. The device can decode bitstreams and process navigation data of t\
he following formats:
DVD -Video, DVD -Audio, CD- DA, VCD (Video -CD), SVCD (Super Video -CD) and MP3.
The features of this chip can be listed as follows:
Disc loader control and bitstream processing
· 8 analog inputs (low frequency) for servo errors and RF signals envelo\
pe monitoring
· 11 actuators drive or control outputs. Two analog outputs through 11 bit\
s DACs (e.g. for the
tracking and focus coils), and 9 PWM outputs divide d into two type groups: High frequency,
uniform type PWMs (e.g. for the spindle and sled motor drives)\
, and lower frequency
regular type PWMs, which can be used e.g. for programmed tray mo\
tion or RF amplifier
parameter setting.
· Processing of spindle an d sled position read-back devices
· All servo loop closure, closed loop control and error handling.
· Bitstream extraction using AGC, bit clock frequency detection and phase \
lock loop, adaptive
threshold calculations, Viterbi bit decision, defect detection, fr ame sync detection and EFM/P
conversion.
· CD sub -code extraction and processing.
· CD ECC for all CD types. CD EDC for Mode 1 discs
· DVD ECC and EDC.
· Track buffer and re -try management
Decoding
· Single chip solution for playback of DVD -Video, DVD -Audio Video -CD, Super Video- CD, CD-
DA, and MP3 from CD -ROM, CD -R or CD -R/W.
· Decoding and display of high resolution MPEG 1 and MPEG 2 still image se\
quences
(including ASVs from DVD-Audio but without the transition effects).
· Decoding of Dolby AC -3, DTS or MLP multi -cha nnel audio.
· Decoding of MPEG 1 or MPEG 2 layer II mono, stereo, or multi -channel audio. Decoding of
MPEG 1 or MPEG 2 Layer 3 (MP3) mono and stereo audio.
· PCM and LPCM audio playback from DVD -Video, DVD-Audio, Video-CD and CD -DA.
· Decoding and playback of sub- picture (including Highlight), and closed captions (line 21)\
data from DVD -Video discs.
· Interlaced digital and analog video output or progressive analog video o\
utput.
· NTSC and PAL standards. PAL playback of NTSC discs and NTSC playback of \
PAL discs.
· Special modes support like pause, slow motion, fast forward and reverse.
Post Processing
· Audio down mixing, sample rate conversion, Dolby's pro -logic and 3D enhancement.
· Karaoke mixing of decoded audio and two channels of input audio.
· On-chip OSD engine wi th 32 color (24-bit YUV) palette, up to 8 levels of transparency; and
capability of blinking regions and vertical scrolling.
· On-screen and off -screen OSD memory regions for animation support.
· 1/4 pixel and 1/4 line pan&scan
· Horizontal and vertical up- and down-scaling with polyphase two -tap vertical and horizontal
interpolation.
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Letterbox and Pan-scan display aspect ratio conversion (16:9 to 4:3)
· Automatic frame rate conversion (e.g., 3/2 pull down) and format conve\
rsion (16:9, 4:3, 1:1).
· EIA-608 compatible modulation of line 21 (NTSC) or line 22 (PAL) closed captions data \
over
the video output.
· Edge adaptive, two fields, de -interlacing generating a progressive analog video output.
Interfaces
· 8-bit YUV 4:2:2 digital interlaced video output.
· Composite, Y/C, YUV or RGB interlaced analog video output or component progressive
analog video output (using 10 bits on -chip DACs)
· Internally generated video sync signals and internally generated audio p\
ort clock signals.
· 6/18/20/24 -bit I2S or EIAJ serial audio outputs. 16 bit I2S EIAJ serial audio input
· 2 to 8 channels audio output. 2 channels audio input
· S/PDIF output for compressed audio (including DTS) or reconstructed au\
dio (according to
IEC 958 and its extensions).
· Single 64 -Mbit, single 16 -Mbits and dual 16 Mbits SDRAMs (16 bits data)
· Direct interface (through RF and servo amplifiers) to several types of\
disc loaders.
· SW controlled GPIO to interface to IR remote control receiver, front pan\
el concentrator, audio
DACs and ADC, etc., e.g. using I2C, SPI and other pro tocols.
· 3 line serial general purpose slave interface (SSC)
· 2 UART interfaces for CPU SW debug
· JTAG interfaces for CPU, ADP and DSP SW debug
Physical Features
· Dual supply: 1.8V for the core and PLL, and 3.3V for the I/O and DACs.
· 208 pin, PQFP package.
· TTL I/O levels. 5V tolerance on many inputs.
· Single 27MHz crystal/clock input.
· 5 layer metal, 0.18 micron technology.
· Less than 1.6 W power consumption during operation.
· Several power- down modes
1.2 M EMORY
1.2.1 SDRAM Memory Interface
The ZR36768 provides 16- bit interface to DRAM memory devices used as OSD, MPEG
stream and video buffer memory for a DVD player. The maximum amount of m\
emory supported
is 8 MB of Synchronous DRAM (SDRAM). The memory interface is configura\
ble in depth to
support 64 -Mb addressin g.
1.3 D RIVE INTERFACES
The ZR36768 supports d irect interface (through RF and servo amplifiers) to several types
of disc loaders.
1.4 FRONT P ANEL
The front panel is based around a Futaba VFD and a Princeton front panel\
controller
chip, (PT6311). The ZR 36768 controls the PT16311 using several control signals, (clock, data,\
chip select). The infrared remote control signal is passed directly to \
the ZR36768 for decoding.
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