ST92196A STMicroelectronics, ST92196A Datasheet - Page 130

• 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)
8.5.5.6 Event Line
Address in Segment 22h: 00h (Bits 15:8), 01h (Bits 7:0)
EL[8:0] is a 9-bit number specifying at which TV
line number the character row display should start.
For more details refer to
Bits 15:8: are at address 00h in Segment 22h.
Bits 7:0 are at address 01h
Bits 15:9 are reserved.
8.5.5.7 First Buffer Start Address
Address in Segment 22h: 02h (Bits 15:8), 03h (Bits 7:0)
To handle the display properly, the user must store
the start address of the first OSDRAM row buffer
(the row buffer containing the first row to be dis-
played when the Display controller is turned on).
Two bytes are reserved for this in the OSDRAM.
(See
Bits 15:8 are at address 02h in Segment 22h
Bits 7:0 are at address 03h
Bits 15:9 are reserved.
15
15
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Figure
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59).
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Section 8.5.8.8
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FSA8 FSA7
EL8
8
8
- ON SCREEN DISPLAY CONTROLLER (OSD)
EL7
7
7
As row buffer start addresses are always even ad-
dresses, Bit 0 is forced to 0 by hardware.
FSA6
EL6
FSA5
EL5
FSA4
EL4
FSA3
EL3
FSA2
EL2
FSA1
EL1
EL0
0
0
0
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