SDA9400 Datasheet, PDF (63/94 Pages) Micronas – Scan Rate Converter using Embedded DRAM Technology Units

SDA 9400
VERINT
2
1
0
100/120 Hz
interlaced
RMODE=0
CONV=0
ZOOM
6
4
2
50/60 Hz
progressive
RMODE=1
CONV=0
ZOOM
3
2
1
real vertical
expansion
factor
real vertical
expansion
factor
VDECON=0
21.33
32.00
64.00
VDECON=2
16.00
24.00
48.00
The parameter VPAN can be used to select the start line of the expansion. To expand the upper part
of the incoming signal with the factor 2.0, VPAN should be set to zero. To expand the lower part,
VPAN should be equal to 144. That means in case of VPAN=0 the first used line is line 1 and in case
of VPAN=144 the first used line is line 144.
Dependent on the parameter VERINT a certain number of input lines of the input field is required.
Therefore not all VPAN values are allowed. The formula below can be used to calculate the
maximum allowed VPAN value depending on the chosen VERINT value.
Calculation of maximum VPAN value
VPANmax =
2
´
ALPFOP
´
æ
è
1
–
Θ_---V_----E_----R_----I_--N_-----T_----+_-----1_----Ρö
64
Floor symbol means: take only integer part of x
x
Output write parameter
Parameter
VERINT
VPAN
FREQR
Subaddress
13h
1Ah
1Bh
Description
Vertical expansion factor
Vertical adjustment of the output picture
Frequency range select
Micronas
63
Preliminary Data Sheet