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參數(shù)資料
| 型號： | TPU2735 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Teletext Processor |
| 中文描述： | 圖文處理器 |
| 文件頁數(shù)： | 22/37頁 |
| 文件大?。?/td> | 1019K |
| 代理商： | TPU2735 |
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TPU 2735
22
RHA
NRT
NRH
Option
0
0
0
0
1
0
0
1
1
0
0
1
0
1
0
rolling header while searching
the selected page, rolling time
always
only time is rolling
only central header section
is rolling while searching
(recommended for NTSC
mode)
header does not change
rolling header always
Rolling Header Options
1
X
1
ignore parallel magazine
control bit (C11 in 8.4.) for
rolling header acquisition
td<
td>
TBD = 0
TBD =1
Composite
Signal
Horizontal
Fig. 7–1:
Timing diagram for the horizontal and verti-
cal blanking pulses t
AZ
and t
AB
for two cases
32
μ
s
32
μ
s
Pulse t
AZ
Vertical
Blanking
Pulse t
AB
in Line
No. 1
7.6. The Status Indicator Register, R-SI
The contents of R-SI determine the eight characters of
the status indicator in left corner of row 0. The status indi-
cator displays three numerals which represent a page
number. PMI and NVMI determine the mode of their dis-
play:
Page Symbol List
PMI
NVMI
Display Mode
0
1
0
1
0
0
1
1
white, steady
light-blue, steady
yellow, steady
red, flashing
R-SI Status Indicator Register
address 0/24/22, 2-byte register
MSB
LSB
MSB
LSB
D7
D6
D5
D4
D3
D2
D1
D0
tens BCD
units BCD
indicated page number
PMI
NVMI
D7
D6
D5
D4
D3
D2
D1
D0
indicated magazine
number
(binary, 0 0 0 8)
page symbol
PMI:
PMI = 1 changes the color of the indicated page number
to blue. PMI can be used to indicate that a new page
number is not complete or has not yet been accepted.
programming mode indicator;
NVMI:
NVMI = 1 changes the color of the indicator to yellow
non-volatile memory indicator;
Page Symbol List
D6
D5
D4
Page Symbols
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
“space”
R
S
T
=
>
P
Page
Header
>
1
0
0
Fig. 7–2:
Display of the status indicator in the left
corner of row 0
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