SDA9410-B13 Datasheet, PDF (56/179 Pages) Micronas – Display Processor and Scan Rate Converter using Embedded DRAM Technology Units

SDA9410
Preliminary Data Sheet
Application modes and memory concept
Having 2 fields available for the master channel joint line free display can be activated.
Storing 2 fields for both channels a complete joint line free display is possible. In both
cases a suitable shift of the output raster phase is necessary (especially for ’Double
Window’ / ’Split Screen’ / ’Picture And Picture’ / ’Side by Side’). In SSC mode field
repetition (Simple 100Hz AABB; Field repetition AAAA or BBBB) is used for interlaced
scan (100/120 Hz) rate conversion, ABAB modes are not supported. For progressive
scan conversion also only field based algorithms are possible (Simple 50Hz AA*, B*B;
Field repetition AA*, B*B). For the definition of the different scan rate conversion
algorithms compare "Operation mode generator" on page 83.
Positioning of the pictures on the display is done externally by specifying the start of
reading for both channels.
In MUP-Mode the configurations and functions for both channels are programmable
independently. Two fields of the master channel can be stored to achieve a joint line free
display of one decimated live picture. Applying smaller decimation factors only one field
can be stored and joint line free display is not possible any more. These 2 modes
correspond to SSC configuration for the master channel, AABB mode is supported.
For the second channel or for both channels any number of decimated fields can be
stored step by step. The horizontal positions of the pictures are adjustable in steps of 4
pixel, the vertical positions are also variable and have a step size of 2 lines. The width
and the height of a decimated picture depend on the corresponding decimation factors.
A maximum of 1 picture per channel can be live. Only field repetition (AAAA, BBBB) is
supported in this mode. Other display modes cause raster artefacts in live pictures. Joint
lines are also not removed in live pictures.
A special MUP-Mode based on SSC memory configuration enables storing of 2 fields of
a decimated still picture. The fields are calculated using only one input field for
decimation. The generated lines are interpreted alternating as A- and B-lines. The
described method improves vertical resolution of still pictures clearly without causing
motion artefacts. The limited memory capacity does not allow to fill the complete display
with decimated pictures created with the described method using only one channel. The
different configuration can be selected by the I²C Bus parameter VERRESM and
VERRESS, respectively.
VERRESM/VERRESS
1
0
Vertical resolution in MUP-Mode
(ORGMEMM/ORGMEMS=1 and WRFLDM/WRFLDS=1)
frame resolution
field resolution
Table 41 Definition of VERRESM/VERRESS
56
Micronas