SDA9410-B13 Datasheet, PDF (49/179 Pages) Micronas – Display Processor and Scan Rate Converter using Embedded DRAM Technology Units

SDA9410
Preliminary Data Sheet
Input signal processing
upper half of the input picture (AAFH) and the lower half of the input picture (AASH). If
one of both counter values is greater as 2*TH_MA_AA + 112, the SLAA and ELAA I²C
Bus parameters are set to their default values.
Output signals
SLAA=NALPIPM+PD
ELAA=2*ALPFIPM+SLAA-1
Status_SLAA=TRUE
Status_ELAA=TRUE
no change of the values
(AAFH or AASH) >= 2 * TH_MA_AA + 112
otherwise
Table 30 Correction of “start/end-line decision filter” block
It is possible to make the results of the letter box detection visible on screen in real time
to optimize the I²C Bus parameters. The figure below explains the different possibilities.
The I²C Bus parameter VOLBD can be used to switch on (VOLBD=1) or off (VOLBD=0)
the visibility function.
PANATV
this is a
letter box
SLAA,
Status_SLAA=FALSE
RELY=FALSE
ELAA,
Status_ELAA=FALSE
PANATV
this is a
letter box
SLAA,
Status_SLAA=TRUE
RELY=FALSE
ELAA,
Status_ELAA=TRUE
PANATV
this is a
letter box
SLAA,
Status_SLAA=FALSE
RELY=TRUE
ELAA,
Status_ELAA=FALSE
PANATV
this is a
letter box
SLAA,
Status_SLAA=TRUE
RELY=TRUE
ELAA,
Status_ELAA=TRUE
Figure 22 Visibility of letter box detection I²C Bus parameters
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