SAA7216 Philips Semiconductors, SAA7216 Datasheet - Page 4

• Manufacturer Part Number: SAA7216
• Description: Integrated MPEG AVGD decoders
• Manufacturer: Philips Semiconductors

Philips Semiconductors
Graphics features
2 nearly identical graphics planes: the first graphics plane
commonly called the background plane and the second
graphics plane commonly called foreground plane.
The following features apply for both planes.
2000 Jan 31
Graphics is presented in boxes independent of video
format
Boxes can be up to full screen allowing double buffer
display mechanism
Two independent data paths with RGB 4 : 4 : 4 and
YC
mixing
RGB path transparent to YC
Conversion matrices available to allow any format on
any different data path (RGB or YC
Screen arrangement of boxes is determined by display
list mechanism which allows for multiple boxes,
background loading, fast switching, scrolling,
overlapping and fading of regions
Real-time anti-flickering performed in hardware;
programmable hardware available for off-line
anti-flickering
Hard edged or soft edged wiping of regions available
Support of 2, 4, 8, 16 bit/pixel in fixed bit maps format or
coded in accordance to the DVB variable/run length
standard for region based graphics
Chrominance down-sampling filter switched per region
Display colours are obtained via colour look up tables or
directly from bitmap; CLUT output can be YC
8-bit for each signal component thus enabling 16 M
different colours and 6-bit for T which gives 64 mixing
levels with video; CLUT output can also be RGBT with
same resolutions; non linear processing available by
means of LUTs
Map table mechanism to specify a sub set of entries if
the CLUT is larger than required by the coded bit
pattern; supported map tables are 16 to 256, 4 to 256
and 4 to 16
Up to 4 graphics boxes may overlap vertically even
inside one graphics layer thanks to the use of flexible
chained descriptors
Graphics mechanism can be used for signal generation
in the vertical blanking interval; useful for teletext, wide
screen signalling, closed caption etc.
Integrated MPEG AVGD decoders
b
C
r
4 : 2 : 2 formats available with independent
b
C
r
format
b
C
r
)
b
C
r
T at
4
In addition to the previous listed features, the second
graphics plane sustains:
Data manipulation unit
Cursor
Digital output
Analog output
Teletext insertion with automatic teletext data retrieving
from the external SDRAM.
Powerful 3D block move with different patterns for
source and destination area
Dedicated events for video synchronization
Scaling, format conversion and bit manipulation from a
chained list of instructions.
Size of 1024 pixels
Programmable shape (8
64
16 colours available with a 4 level transparency mixing
with video and graphics
Cursor colours obtained via two 16 entry CLUTs with
YC
respectively 4 bits (or 4, 5, 3, respectively 4 bits)
Cursor can be moved freely across the screen without
overlapping restrictions.
Programmable selection for the mixed graphics planes
with video for the CVBS and RGB outputs
Digital video input/output interface on 8 bit,
27 MHz (C
format.
Analog video output interface on both the RGB and
Y/C/CVBS formats available simultaneously
PAL/NTSC/SECAM encoding (SAA7221HS only)
Two DACs for CVBS, Y and C, CVBS running at
27 MHz 10-bit resolution
Three DACs for R (Y), G (Cb) and B (Cr) running at
27 MHz; 9-bit resolution connected to a 10-bit input DAC
Closed captioning and teletext encoding on CVBS
Macrovision 7.01 and 6.1 encoding capability on
Y or CVBS and C or CVBS (SAA7216HS only).
b
C
16 and 128
r
SAA7215; SAA7216; SAA7221
T at 6, 4, 4 respectively 2 bits and RGBT at 4, 4, 4
b
YC
r
Y multiplexed bus), at a CCIR-656
8)
128, 16
Preliminary specification
64, 32
32,