參數(shù)資料
型號(hào)： M37272M8-526SP
廠商： Mitsubishi Electric Corporation
英文描述： SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
中文描述： 單芯片8位CMOS微機(jī)隱蔽字幕解碼器和屏幕顯示控制器
文件頁(yè)數(shù)： 68/131頁(yè)
文件大?。?/td> 1297K
代理商： M37272M8-526SP
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68
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37272M6H/M8H/MAH/MFH
–
XXXSP/FP
M37272E8SP/FP, M37272EFSP/FP
MITSUBISHI MICROCOMPUTERS
Rev 1.0
The horizontal display start position is common to all blocks, and can
be set in 128 steps (where 1 step is 4T
OSC
, T
OSC
being the OSD
oscillation cycle) as values “00
16
” to “FF
16
” in bits 0 to 6 of the hori-
zontal position register (address 00D1
16
). The horizontal position reg-
ister is shown in Figure 8.11.8.
Fig. 8.11.8 Horizontal Position Register
Notes 1 :
1T
C
(T
C
: OSD clock cycle divided in pre-divide circuit) gap occurs
between the horizontal display start position set by the horizontal
position register and the most left dot of the 1st block. Accordingly,
when 2 blocks have different pre-divide ratios, their horizontal dis-
play start position will not match.
2 :
The horizontal start position is based on the OSD clock source cycle
selected for each block. Accordingly, when 2 blocks have different
OSD clock source cycles, their horizontal display start position will
not match.
3 :
When setting “00
16
” to the horizontal position register, it needs ap-
proximately 62T
OSC
(= T
def
) interval from a rising edge (when nega-
tive polarity is selected) of H
SYNC
signal to the horizontal display start
position.
Fig. 8.11.9 Notes on Horizontal Display Start Position
4
T
O
S
C
’
N
4
T
O
S
C
N
H
S
Y
N
C
1T
C
1
T
C
1T
C
N
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e
1
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2
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:
b7b6b5b4b3b2b1b0
Horizontal position register (HP) [Address 00D1
16
]
B
0
to
6
Name
Horizontal Position Register
7
Horizontal display start
position control bits
(HP0 to HP6)
Nothing is assigned. This bit is a write disable bit.
When this bit is read out, the value is
“
0.
”
Functions
After reset R W
Horizontal display start positions
128 steps (00
16
to 7F
16
)
(1 step is 4T
OSC
)
0
0
R W
R
—
Note:
The setting value synchronizes with the V
SYNC
.
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