M37221M4H_15 Datasheet, PDF (60/114 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER

M37221M4H/M6H/M8H/MAH–XXXSP/FP M37221EASP/FP
8.11.1 Display Position
The display positions of characters are specified in units called
“blocks.” There are 2 blocks : blocks 1 and 2. Up to 24 characters
can be displayed in each block (refer to “8.11.3 Memory for OSD”).
The display position of each block can be set in both horizontal and
vertical directions by software.
The display start position in the horizontal direction can be selected
for all blocks from 64-step display positions in units of 4TC (TC =
OSD oscillation cycle).
The display start position in the vertical direction for each block can
be selected from 128-step display positions in units of 4 scanning
lines.
Blocks are displayed in conformance with the following rules:
• Block 2 is displayed after the display of block 1 is completed (Figure
8.11.4 (a)).
• When the display position of block 1 is overlapped with that of block
2 (Figure 8.11.4 (b)), block 1 is displayed in front.
• When another block display position appears while one block is
displayed (Figure 8.11.4 (c)),only block 1 is displayed. Similarly,
when multiline display, block 1 is displayed after the display of block
2 is completed.
HR
CV1
CV2
(a) Example when each block is separated
Block 1
Block 2
HR
CV1 = CV2
(b) Example when block 2 overlaps with block 1
Block 1
(Block 2 is not displayed)
HR
CV1
CV2
CV1
Block 1
Block 2
Block 1 (second)
(c) Example when block 2 overlaps in process of block 1
Notes 1: CV1 or CV2 indicates the vertical display start position of display block 1 or 2.
2: HR indicates the horizontal display start position of display block 1 or 2.
Fig. 8.11.4 Display Position
← Not displayed
← Not displayed
Rev.1.00 Oct 01, 2002 page 58 of 110
REJ03B0134-0100Z