MITSUBISHI MICROCOMPUTERS
M37270MF-XXXSP
M37270EF-XXXSP, M37270EFSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
Blocks are displayed in conformance with the following rules:
(2) Display Position
➀ When the display position is overlapped with another block
(Figure 53, (b)), a lower block number (1 to 16) is displayed on
the front.
The display positions of characters are specified in units called a
“block.” There are 16 blocks, blocks 1 to 16. Up to 40 characters can
be displayed in each block (refer to (6) Memory for OSD).
The display position of each block can be set in both horizontal and
vertical directions by software.
➁ When another block display position appears while one block is
displayed (Figure 53 (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 dis-
play period ( ✽ ) of another block.
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 = oscillating cycle for OSD).
✽ In the case of OSD mode block: 20 dots in vertical from the verti-
cal display start position.
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).
✽ In the case of CC or EXOSD mode block: 26 dots in vertical from
the vertical display start position.
(HR)
VP11, VP21
Block 1
Block 2
Block 3
VP12, VP22
VP13, VP23
(a) Example when each block is separated
(HR)
VP11, VP21
VP12, VP22
Block 1
(Block 2 is not displayed)
(b) Example when block 2 overlaps with block 1
(HR)
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 contents of vertical position registers 1i or 2i.
Fig. 53. Display position
49
RENESAS [ RENESAS TECHNOLOGY CORP ]
