ST92196A STMicroelectronics, ST92196A Datasheet - Page 149

• Manufacturer Part Number: ST92196A
• Description: 8/16-bit Mcu For Tv Applications With Up To 96k Rom, On-screen-display And 1 Or 2 Data Slicers
• Manufacturer: STMicroelectronics

OSD CONTROLLER (Cont’d)
SHAPE ATTRIBUTE - 18x26 MATRIX
Address in segment 22h: 2p+5+3z. See
Bit 7 = CODX Character Code Extension
This bit is used as the character address exten-
sion. Then it is possible to address any of the
18x26 characters of the font ROM.
Let’s assume that the character code is ChC[7:0]
(1 byte), then the character addressed with this
structure is: CODX.ChC[7:0]
Bit 6 = DBLY Double height control bit
This bit controls the double height feature applied
on the current row height.
0: The character is displayed with the current row
1: The current character is displayed with a double
149/268
CODX DBLY
- ON SCREEN DISPLAY CONTROLLER (OSD)
7
height, as defined by SY
height than defined by SY. The display of the
lower or upper half of the character is controlled
by the UH row attribute bit (refer to
8.5.8.3).
DBLX
FXP
BXP
(Section
FOC
8.5.8.3).
Section
SHA
Figure
FRC
0
59.
Bit 5 = DBLX Double width control bit
This bit controls the double width feature applied
to the current row character width.
0: The character is displayed with the current width
1: The character is displayed in double width, ac-
Bits 4:0 = Please refer to the bit descriptions in the
9x13 matrix shape attributes.
as defined by SX
cording to the following rules:
– It covers the next character location
– The next character location is read and de-
– If the character is the last one in the row, it will
coded but not processed,
be truncated to its left half.
(Section
8.5.8.3).