M306V0ME-107FP MITSUBISHI [Mitsubishi Electric Semiconductor], M306V0ME-107FP Datasheet - Page 200
M306V0ME-107FP
Manufacturer Part Number
M306V0ME-107FP
Description
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
Manufacturer
MITSUBISHI [Mitsubishi Electric Semiconductor]
Datasheet
1.M306V0ME-107FP.pdf
(256 pages)
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Figure 2.16.40 Note on occurrence of OSD1 interrupt
2.16.12 Multiline Display
This microcomputer can ordinarily display 16 lines on the CRT screen by displaying 16 blocks at different
vertical positions. In addition, it can display up to 16 lines by using OSD1 interrupts.
An OSD1 interrupt request occurs at the point at which display of each block has been completed. In
other words, when a scanning line reaches the point of the display position (specified by the vertical
position registers) of a certain block, the character display of that block starts, and an interrupt occurs at
the point at which the scanning line exceeds the block. The mode in which an OSD1 interrupt occurs is
different depending on the setting of the OSD control register 2 (refer to Figure 2.16.7).
• When bit 7 of the OSD control register 2 is “0”
• When bit 7 of the OSD control register 2 is “1”
Notes 1: An OSD1 interrupt does not occur at the end of display when the block is not displayed. In other
An OSD1 interrupt request occurs at the completion of layer 1 block display.
An OSD1 interrupt request occurs at the completion of layer 2 block display.
On display (OSD1 interrupt request occurs
at the end of block display)
2: When another block display appears while one block is displayed, an OSD1 interrupt request
3: On the screen setting window, an OSD1 interrupt occurs even at the end of the CC mode block
Block 1 (on display)
Block 2 (on display)
Block 3 (on display)
Block 4 (on display)
words, if a block is set to off display by the display control bit of the block control register i
(addresses 0210
2.16.41 (A)).
occurs only once at the end of the another block display (refer to Figure 2.16.40 (B)).
(off display) out of window (refer to Figure 2.16.40 (C)).
Block 1
Block 2
(B)
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
16
to 021F
No
“OSD1 interrupt request”
“OSD1 interrupt request”
“OSD1 interrupt request”
“OSD1 interrupt request”
“OSD1 interrupt request”
“OSD1 interrupt request”
16
(A)
), an OSD1 interrupt request does not occur (refer to Figure
Window
Off display (OSD1 interrupt request does
not occur at the end of block display)
Block 1 (on display)
Block 2 (on display)
Block 3 (off display)
Block 4 (off display)
Block 1
Block 2
Block 3
(C)
and ON-SCREEN DISPLAY CONTROLLER
MITSUBISHI MICROCOMPUTERS
M306V0ME-XXXFP
“OSD1 interrupt request”
“OSD1 interrupt request”
No
“OSD1 interrupt request”
No
“OSD1 interrupt request”
“OSD1 interrupt request”
“OSD1 interrupt request”
“OSD1 interrupt request”
M306V0EEFP
Rev. 1.0
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