ch7013b ETC-unknow, ch7013b Datasheet - Page 4

• Manufacturer Part Number: ch7013b
• Description: Digital Pc To Tv Encoder
• Manufacturer: ETC-unknow

CHRONTEL
4
Table 1. Pin Descriptions
48-Pin
LQFP
20, 26
33, 42
31, 40
5, 18,
8, 20,
22
19
29
30
32
38
34
28
Power
Power
Power
Power
Power
Power
In/Out
Type
Out
Out
In
In
Symbol
CVBS/B
CSYNC
CLOCK
DGND
ADDR
AGND
DVDD
AVDD
DATA
GND
VDD
/SD
/SL
Composite Video Output
A 75 : 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 : 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 pin, which corresponds to bits 1 and 0 of the
serial device address, creating an serial port address selection as follows:
NOTE: The serial port address is not to be confused with the Device Address Byte.
The Device Address Byte is composed of 8 bits rather than 7 bits where the first 7
bits is the serial port address and the last bit is the read/write bit. Please refer to
AN47 for details.
Analog ground
These pins provide the ground reference for the analog section of the CH7013B,
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 +3.3V power to the analog section of the CH7013B.
DAC Power Supply
These pins supply the +3.3V power to CH7013B’s internal DAC’s.
DAC Ground
These pins provide the ground reference for CH7013B’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 CH7013B.
Digital Ground
These pins provide the ground reference for the digital section of CH7013B, and
MUST be connected to the system ground to prevent latchup.
ADDR
1
0
Serial Address Selected
111 0101 = 75h = 117
111 0110 = 76h = 118
Description
201-0000-069
Rev. 1.2, 9/1/2004
CH7013B