參數(shù)資料
型號(hào)： CH7002D
廠商： Electronic Theatre Controls, Inc.
英文描述： Scalable VGA to NTSC/PAL Encoder
中文描述： 可擴(kuò)展顯卡至NTSC / PAL編碼器
文件頁(yè)數(shù)： 22/36頁(yè)
文件大?。?/td> 199K
代理商： CH7002D
CHRONTEL
CH7002D
22 201-0000-029 Rev6.1, 8/2/99
Registers and Programming
The CH7002 is a fully programmable device, providing for full functional control through the I
2
C port, or partial
functional control, through direct hardware pins. The CH7002 contains a total of 12 registers, which are listed in
Table 5.
Display Mode Register
S
ymbol: DMR
Address: 00H
Bits: 3
This register provides programmable control of the CH7002 display mode, including input resolution, output TV
format, and overscan/underscan scaling. The three-bit field, DM[2:0], selects the display mode to be used according
to the following table of modes. Note that this programming of DM[2:0] is mutually exclusive to the pin-
programming method (only one mode of programming may be used at any one time, based on the state of the
PMODE pin).
Table 5. Register Map
Register
Display Mode
Flicker Filter
Symbol
DMR
FFR
Address
00H
01H
Bits
3
2
Functional Summary
Display mode selection
Flicker filter mode
selection
Y (luma) filter bandwidth
selection
Sampling clock delay
timing adjustment
Y Filter
YFR
02H
3
Sampling Delay
SDR
03H
4
Black Level
BLR
04H
7
Black level adjustment
Position Control
PCR
05H
4
Enables movement of
displayed image on TV
Reserved
06H
Reserved for future use
Device version number
Power management and
other controls
Version ID
VIR
MCR
07H
08H
3
8
Miscellaneous
Control
Connection
Detect
CDR
09H
4
Detection of TV
presence
Reserved
Test
Address
TR
0AH
8
AR
0BH
4
Current register being
addressed
Bit:
Symbol:
7
6
5
4
3
2
DM2
1
DM1
0
DM0
Type:
Default:
R/W
R/W
R/W
0
1
0
DM2
0
0
0
0
1
1
1
1
DM1
0
0
1
1
0
0
1
1
DM0
0
1
0
1
0
1
0
1
Input Res
800x600
640x480
640x480
640x480
640x480
800X600
800x600
Reserved
Output
PAL
PAL
NTSC
NTSC
PAL
PAL
NTSC
Over/Under Scan
Underscan
Underscan
Overscan
Underscan
Overscan
Overscan
Underscan
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CH7002D-V 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Scalable VGA to NTSC/PAL Encoder
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CH7003B-V 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Digital PC to TV Encoder
CH7004C 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Digital PC to TV Encoder with Macrovision
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