CH7004C-V ETC1 [List of Unclassifed Manufacturers], CH7004C-V Datasheet - Page 6

• Manufacturer Part Number: CH7004C-V
• Description: Digital PC to TV Encoder with Macrovision
• Manufacturer: ETC1 [List of Unclassifed Manufacturers]

CHRONTEL
Digital Video Interface
The CH7004 digital video interface provides a flexible digital interface between a computer graphics controller and
the TV encoder IC, forming the ideal quality/cost configuration for performing the TV-output function. This digital
interface consists of up to 16 data signals and 4 control signals, all of which are subject to programmable control
through the CH7004 register set. This interface can be configured as 8, 12 or 16-bit inputs operating in either
multiplexed mode or 16-bit input operation in de-multiplexed mode. It will also accept either YCrCb or RGB (15,
16 or 24-bit) data formats and will accept both non-interlaced and interlaced data formats. A summary of the input
data format modes is as follows:
6
Table 1. Pin Descriptions
Table 2. Input Data Formats
44-Pin
44, 36,
42, 34,
PLCC
29, 25
22, 11
24, 14
Width
16-bit
15-bit
16-bit
12-bit
12-bit
16-bit
N/A
N/A
N/A
8-bit
8-bit
8-bit
8-bit
Bus
31
44Pin
TQFP
19,23
30,38
28,36
5,16,
8,18,
N/A
N/A
N/A
25
Non-multiplexed
Non-multiplexed
Non-multiplexed
Transfer Mode
2X-multiplexed
2X-multiplexed
3X-multiplexed
2X-multiplexed
2X-multiplexed
2X-multiplexed
2X-multiplexed
Power
Power
Power
Power
Type
Out
Out
Out
Symbol
DVDD
DGND
GND
VDD
G
R
B
Color Space and Depth
DAC Power Supply
These pins supply the 5V power to CH7004’s internal DAC’s.
DAC Ground
These pins provide the ground reference for CH7004’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 CH7004.
Digital Ground
These pins provide the ground reference for the digital section of
CH7004, and MUST be connected to the system ground to prevent
latchup.
R (Red) Component Output
This pin provides the analog Red component of the digital RGB input in
the RGB Pass-Through mode.
G (Green) Component Output
This pin provides the analog Green component of the digital RGB input
in the RGB Pass-Through mode.
B (Blue) Component Output
This pin provides the analog Blue component of the digital RGB input in
the RGB Pass-Through mode.
YCrCb (24-bit)
YCrCb (24-bit)
RGB 16-bit
RGB 15-bit
RGB 15-bit
RGB 16-bit
RGB 24-bit
RGB 24 (32)
RGB 24
RGB 24
Description
8-8-8 over two words - ‘C’ version
8-8-8 over two words - ‘I’ version
CbY0,CrY1...(CCIR656 style)
Cb,Y0,Cr,Y1,(CCIR656 style)
8-8,8X over two words
8-8-8 over three bytes
5-5-5 over two bytes
5-6-5 over two bytes
Format Reference
201-0000-024 Rev 2.1, 8/2/99
5-6-5 each word
5-5-5 each word
CH7004C