參數(shù)資料
型號: M37274MA-052SP
廠商: Mitsubishi Electric Corporation
英文描述: PHOTO SM DETECTOR
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
文件頁數(shù): 49/147頁
文件大?。?/td> 2042K
代理商: M37274MA-052SP
49
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37274EFSP
PRELIMINARY
Notice: This is not a final specification.
Some paramentic limits are subject to change.
MITSUBISHI MICROCOMPUTERS
Fig. 47. Clock Run-in Detect Registers 1 and 3
Fig. 46. Window Setting
Fig. 45. Clock Run-in Register 3
8
When the count value
in the window is 4 to 6,
this is determined as a
clock run-in.
Horizontal
synchronous
signal
Composite
video signal
Window
Clock run-in
Start bit data +
16-bit data
Time to be set in the
window register
Time to be set in
the start bit position
register
b7 b6 b5 b4 b3 b2 b1 b0
Clock run-in register 3 (CR3) [Address 0209
16
]
B
Name
Functions
After reset
R W
Clock Run-in Register 3
0
to
3
4
0
R W
R W
Indeterminate
R W
Clock run-in count value of
sub-data slice line (CR30
to CR33)
Data latch completion flag
for caption data in sub-
data slice line (CR34)
5
6
Interrupt mode selection bit
(CR36)
Indeterminate
R W
0: Data is not latched yet
1: Data is latched
Data slice line selection bit
for interrupt request
(CR35)
0: Main data slice line
1: Sub- data slice line
0: Interrupt occurs at end
of data slice line
1: Interrupt occurs at
completion of caption
data latch
Nothing is assigned. This bit is a write disable bit.
When this bit is read out, the value is “0.”
7
Indeterminate
Indeterminate
R —
b7 b6 b5 b4 b3 b2 b1 b0
Clock run-in detect register i (CRDi) (i=1, 3) [Addresses 00E8
16
, 0208
16
]
Clock Run-in Detect Register i
0
to
2
0
R W
Test bits
0
R —
3
to
7
Clock run-in detection bits
(CRDi3 to CRDi7)
B
After reset
Functions
Name
R W
Read-only
Number of reference clock s
to be counted one clock run-
in pulse period
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