Lucent Technologies MN10285K - Manual (Page 160)

On-Screen Display
Standard and Extended Display Modes
MN102H75K/F75K/85K/F85K LSI User Manual Panasonic Semiconductor Development Company
159
Panasonic
7.6 Standard and Extended Display Modes
Two modes are available for the graphics and cursor layers, standard and
extended. In extended mode, the cursor layer can display four grouped graphic
tiles rather than one. The graphics layer can display tiles that are two pixels taller
than those used in standard mode, giving the graphic tiles the same dimensions as
the characters in the text layer.
7.6.1 Cursor Layer Display Modes
The size of the cursor in the cursor layer is programmable to 16W x 16H pixels in
standard mode and 32W x 32H pixels in extended mode. Select the mode for this
layer in the SPEXT bit of the OSD2 register (x’007F08’).
To create a graphic for the cursor layer in extended mode, combine four 16 x 16
tiles. They are ordered as follows: (1) upper left, (2) upper right, (3) lower left,
and (4) lower right. Set the pointers to these tiles in cursor tile code registers 0 to
3 (STC0– 3), where STC0 corresponds to tile (1). Table 7-4 shows the associated
tiles and registers.
A. Standard Mode (16W x 16H) B. Extended Mode (32W x 32H)
Figure 7-2 Cursor Tiles in Standard and Extended Modes
16 pixels
16
pixels
Display start position
set in SHP and SVP
16 pixels
16
pixels
16
pixels
16 pixels
(1) (2)
(3) (4)
Display start position
set in SHP and SVP