ch7013a Chrontel, ch7013a Datasheet - Page 4

• Manufacturer Part Number: ch7013a
• Description: Digital Pc To Tv Encoder
• Manufacturer: Chrontel

CHRONTEL
4
Table 1. Pin Descriptions
44Pin
TQFP
19,23
30,38
28,36
5,16,
8,18,
20
17
26
27
29
34
31
25
Power
Power
Power
Power
Power
Power
In/Out
Type
Out
Out
In
In
Symbol
CVBS/B
CSYNC
CLOCK
AGND
DGND
ADDR
DVDD
AVDD
DATA
GND
VDD
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, this pin outputs the composite video signal. In SCART mode, 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 serial interface port (see the serial
Port Operation section for details).
Serial Clock (Internal pull-up)
This pin functions as the serial clock pin of the serial interface port (see the serial
Port Operation section for details).
Serial Address Select (Internal pull-up)
This pin is the serial Address Select, which corresponds to bits 1 and 0 of the serial
device address (see the serial Port Operation section for details), creating an
address selection as follows:
Analog ground
These pins provide the ground reference for the analog section of the CH7013A,
and MUST be connected to the system ground, to prevent latchup. Refer to the
Application Information section for information on proper supply de-coupling.
Analog Supply Voltage
These pins supply the 5V power to the analog section of the CH7013A.
DAC Power Supply
These pins supply the 5V power to CH7013A’s internal DAC’s.
DAC Ground
These pins provide the ground reference for CH7013A’s internal DACs. For
information on proper supply de-coupling, please refer to the Application
Information section.
Digital Supply Voltage
These pins supply the 3.3V power to the digital section of CH7013A.
Digital Ground
These pins provide the ground reference for the digital section of CH7013A, and
MUST be connected to the system ground to prevent latchup.
ADDR
1
0
1110101 = 75H = 117
1110110 = 76H = 118
Serial Address Selected
Description
201-0000-041 Rev. 1.5, 9/1/2004
CH7013A