參數(shù)資料
型號： M37274MA-XXXSP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, MICROCONTROLLER, PDIP52
封裝： 0.600 INCH, 1.778 MM PITCH, SHRINK, PLASTIC, DIP-52
文件頁數(shù)： 84/131頁
文件大小： 2049K
代理商： M37274MA-XXXSP
56
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37274MA-XXXSP
PRELIMINARY
Notice:
This
is not
a final
specification.
Some
paramentic
limits
are
subject
to change.
MITSUBISHI MICROCOMPUTERS
OSD mode
Same as layer 1
Same as layer 1 (Note)
Pre-divide ratio = 1
Pre-divide ratio = 2
1TC ! 1/2H
1TC ! 1/2H, 1.5TC ! 1/2H
1TC ! 1H
1TC ! 1H, 1.5TC ! 1H
Same position as layer 1
(1) Dual Layer OSD
M37274MA-XXXSP has 2 layers; layer 1 and layer 2. These layers
display the OSD for controlling TV and the closed caption display at
the same time and overlayed on each other.
Each block can be assigned to either layer by bits 6 and 5 of the
block control register (refer to Figure 56). For example, only when
both bits 5 and 6 are “1,” the block is assigned to layer 2. Other bit
combinations assign the block to layer 1.
When a block of layer 1 is overlapped with that of layer 2, a screen is
combined (refer to Figure 58) by bits 7 and 6 of the OSD control
register (refer to Figure 55).
Note: When using the dual layer OSD, note Table 13.
Fig. 57. Image of Dual Layer OSD
CC mode
Data slicer clock or OSC1 or main clock
! 1 or ! 2 (all blocks)
1TC ! 1/2H
Arbitrary
Display mode
OSD Clock source
Pre-divide ratio
Dot size
Horizontal display start position
Table 13. Conditions of Dual Layer
Note: For the pre-divide ratio of the layer 2, select the same as the layer 1’s ratio by bit 6 of the clock control register.
Block in Layer 1
Block in Layer 2
Fig. 58. Display Example of Dual Layer OSD
Block
Parameter
Display example of layer 1 = “HELLO,” layer 2 = “CH5”
CH5
HELLO
Logical sum (OR) of
layer 1’s color and
layer 2’s color
Bit 7 = “0,” bit 6 = “0”
Layer 1’s color has priority
Bit 7 = “0”, bit 6 = “1”
CH5
HELLO
Layer 2’s color has priority
Bit 7 = “1,” bit 6 = “0”
HELLO
CH5
Layer 2
Layer 1
Block 1
Block 2
Block 7
Block 8
...
Block 9
Block 10
Block 11
Block 12
Block
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