M37280MF Datasheet, PDF (74/178 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER

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MITSUBISHI MICROCOMPUTERS
M37280MF–XXXSP, M37280MK–XXXSP
M37280EKSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
12.11.2 Display Position
The display positions of characters are specified by a block. There
are 16 blocks, blocks 1 to 16. Up to 32 characters can be displayed
in each block (refer to “12.11.6 Memory for OSD”).
The display position of each block can be set in both horizontal and
vertical directions by software.
The display position in the horizontal direction can be selected for all
blocks in common from 256-step display positions in units of 4 TOSC
(TOSC = OSD oscillation cycle).
The display position in the vertical direction for each block can be
selected from 1024-step display positions in units of 1 TH ( TH = HSYNC
cycle).
Blocks are displayed in conformance with the following rules:
• When the display position is overlapped with another block
(Figure 12.11.8 (b)), a lower block number (1 to 16) is displayed on
the front.
• When another block display position appears while one block is .
displayed (Figure 12.11.8 (c)), the block with a larger set value as
the vertical display start position is displayed. However, do not dis-
play block with the dot size of 2TC ! 2H or 3TC ! 3H during display
period (V) of another block.
V In the case of OSD mode block: 20 dots in vertical from the vertical
display start position.
V In the case of CC or CDOSD mode block: 26 dots in vertical from
the vertical display start position.
HP
VP11, VP21
VP12, VP22
VP13, VP23
(a) Example when each block is separated
Block 1
Block 2
Block 3
HP
VP11, VP21 = VP12, VP22
(b) Example when block 2 overlaps with block 1
Block 1
(Block 2 is not displayed)
HP
VP11, VP21
VP12, VP22
Block 1
Block 2
(c) Example when block 2 overlaps in process of block 1
Note: VP1i or VP2i (i : 1 to 16) indicates the vertical display start position of display block i.
Fig. 12.11.8 Display Position
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Rev. 1.0