CH1005C Datasheet, PDF (5/49 Pages) List of Unclassifed Manufacturers – Digital PC to TV Encoder with Macrovision

CHRONTEL
CH7005C
Table 1. Pin Descriptions
44-Pin
PLCC
44-Pin
TQFP
Type
30
24
In
28
22
Out
27
21
Out
26
20
Out
23
17
Out
32
26
In/Out
33
27
In
35
29
In
40
34
Power
37
31
Power
31
25
Power
Symbol
Description
RSET
Y/R
C/G
CVBS/B
CSYNC
SD
SC
Reset*
AGND
AVDD
VDD
Reference Resistor
A 360 Ω 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 Ω 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 Ω 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 Output
A 75 Ω 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 Ω termination resistor with short traces should be attached
between CSYNC and ground for optimum performance. In SCART
mode, this pin outputs the composite sync signal.
Serial Data (External pull-up required)
This pin functions as the serial data pin of the I²C interface port (see the
I²C 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 I²C interface port (see
the I²C 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 I²C 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.
201-0000-025 Rev 2.1, 8/2/99
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