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參數資料
| 型號： | TMC2360KLC |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 顏色信號轉換 |
| 英文描述： | COLOR SIGNAL ENCODER, PQFP80 |
| 封裝： | 2.70 MM HEIGHT, MQFP-80 |
| 文件頁數： | 24/24頁 |
| 文件大?。?/td> | 158K |
| 代理商： | TMC2360KLC |
PRODUCT SPECIFICATION
TMC2360
9
Table 6. TVSTD Control When Under Manual
Control (VSCOM = 0)
If VCSOM = HIGH, Vertical Sync Communications are
enabled. VSCOM is described under the Vertical Sync Com-
mand section below.
Image Positioning
POSD and POSR position controls change encoder timing
relative to incoming PC video, shifting the viewed image
either horizontally or vertically to reveal portions of the
image located near the edges or in the overscan areas. At
power-up, the default position is the midpoint of the adjust-
ment range.
Each POSD HIGH pulse moves the TV window down eight
lines. At the lowest position (-64 lines) the direction reverses
and the pulses move the image up in 8-line increments to the
highest position (+64 lines). At this point the direction again
reverses and the next sixteen pulses move the image down to
the lowest position.
Each POSR HIGH pulse moves the TV window eight pixels
to the right. At the maximum right position (+64 pixels) the
direction reverses and the next sixteen pulses move the win-
dow left to the maximum left position (-64 pixels). Direction
again reverses and the next sixteen pulse move the image
right.
Without a RESET, POSD,R controls will loop, causing the
window to move down/up, right/left.
Blank and Blue
TV video can set to active (converted VGA source), blank or
blue by the BLANK and BLUE inputs.
Table 7. Video Output for BLANK and BLUE
inputs
Power Management
D/A Power Control
Table 8 shows how the Composite and S-video outputs are
enabled by the CVIDEN and SVIDEN controls. If
TVSTD1-0
Television
Standard
Video Field Rate
01
NTSC
59.94 Hz
00
NTSC-EIA
59.94 Hz
10
PAL/B, G, I
50 Hz
11
PAL/M
60 Hz
BLANK
BLUE
Video
L
X
Video
H
L
Black
H
Blue
DPMS = LOW, the display will be blue if either or both
VGAHS or VGAVS are inactive.
Table 8. Video Output Control
Powerdown Mode
PWRDN eliminates current drain by the D/A converter,
VTOUT voltage follower and clock outputs. With
PWRDN = HIGH, all outputs are enabled. If
PWRDN = LOW, all outputs are disabled including the
ADCLK, PXCK, VTOUT and the D/A converters.
Software Control
Display Power Management Signaling (DPMS)
Display Power Management is compliant with VESA DPMS
Proposal 1.0. With DPMS = HIGH, the operational state of
the TMC2360 is controlled by the pulse activity on VGAHS
and VGAVS.
Table 9 shows how the TMC2360 responds. “No Pulses” on
VSYNC or HSYNC is declared on the second missing
VSYNC or HSYNC pulse. Following an OFF state, detec-
tion of VGAHS and/or VGAVS restores either the Suspend,
Standby, or On state.
Regardless of the state of DPMS, absence of VGAHS and/or
VGAVS pulses will cause the TMC2360 processor to sleep.
However, with DPMS = HIGH, in the Off state, the A/Ds,
D/As, and clocks are also set to sleep.
Vertical Sync Communications (VSCOM)
VSCOM is a unique feature incorporated into the TMC2360.
With VSCOM = HIGH, the TMC2360 interprets commands
that are encoded within the VGA vertical sync period. TV
Standard and Flicker Filter may be selected by commands
from the PC that supplies the VGA signal.
During the vertical sync period, the number of horizontal
sync pulses is counted. Table 10 shows how the selected
Television Standard changes with the code set into the
TVSTD1-0 inputs and the number of horizontal syncs per
vertical sync interval.
Table 11 shows how the Filter Mode is selected with
VSCOM. Notice that if one standard, such as PAL800 is
selected, then counts of 10, 11 and 12 enable selection of
three lter modes.
CVIDEN SVIDEN
VGAHS &
VGAVS
Compos-
ite Video
S-Video
H
X
YES
Active
X
H
YES
X
Active
L
X
Blank
H
NO
Blue
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