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參數(shù)資料
| 型號： | CH1005C |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Digital PC to TV Encoder with Macrovision |
| 中文描述： | 數(shù)碼電腦電視編碼器和通過Macrovision |
| 文件頁數(shù)： | 5/49頁 |
| 文件大?。?/td> | 338K |
| 代理商： | CH1005C |
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201-0000-025 Rev 2.1, 8/2/99
5
CHRONTEL
CH7005C
44-Pin
PLCC
44-Pin
TQFP
Type
Symbol
Description
30
24
In
RSET
Reference Resistor
A 360
resistor with short and wide traces should be attached
between RSET and ground. No other connections should be made to
this pin.
Luminance Output
A 75
termination resistor with short traces should be attached
between Y and ground for optimum performance. In normal operating
modes other than SCART and RGB bypass, this pin outputs the
composite video signal. In SCART and RGB Bypass modes, this pin
outputs the red signal.
Chrominance Output
A 75
termination resistor with short traces should be attached
between C and ground for optimum performance. In normal operating
modes other than SCART and RGB bypass, this pin outputs the
composite video signal. In SCART and RGB Bypass modes, this pin
outputs the green signal.
Composite Video Outpu
t
A 75
termination resistor with short traces should be attached
between CVBS and ground for optimum performance. In normal
operating modes other than SCART and RGB bypass, this pin outputs
the composite video signal. In SCART and RGB Bypass modes, this pin
outputs the blue signal.
Composite Sync Output
A 75
termination resistor with short traces should be attached
mode, this pin outputs the composite sync signal.
Serial Data (External pull-up required)
This pin functions as the serial data pin of the I
2
C interface port (see the
I
2
C Port Operation
section for details). This pin uses the DVDD supply
and is not 5V tolerant.
Serial Clock (Internal pull-up)
This pin functions as the serial clock pin of the I
2
C interface port (see
the
I
2
C Port Operation
section for details). This pin uses the DVDD
supply and is not 5V tolerant.
Reset Input
When this pin is low, the CH7005 is held in the power-on reset
condition. When this pin is high, the device operates normally and
reset is controlled through the I
2
C register.
Analog ground
This pin provides the ground reference for the analog section of the
CH7005, and MUST be connected to the system ground, to prevent
latchup. Refer to the
Application Information
section for information on
proper supply decoupling.
Analog Supply Voltage
This pins supplies the 5V power to the analog section of the CH7005.
DAC Power Supply
This pins supplies the 5V power to CH7005’s internal DAC’s.
28
22
Out
Y/R
27
21
Out
C/G
26
20
Out
CVBS/B
23
17
Out
CSYNC
32
26
In/Out
SD
33
27
In
SC
35
29
In
Reset*
40
34
Power
AGND
37
31
Power
AVDD
31
25
Power
VDD
Table 1. Pin Descriptions
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