CH7004C Datasheet, PDF (6/51 Pages) List of Unclassifed Manufacturers – Digital PC to TV Encoder with Macrovision

CHRONTEL
CH7004C
Table 1. Pin Descriptions
44-Pin
PLCC
44Pin
TQFP
Type
31
25
Power
29, 25
19,23
Power
44, 36,
22, 11
42, 34,
24, 14
5,16,
30,38
8,18,
28,36
Power
Power
N/A
N/A
Out
N/A
N/A
Out
N/A
N/A
Out
Symbol
VDD
GND
DVDD
DGND
R
G
B
Description
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.
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:
Table 2. Input Data Formats
Bus
Width
16-bit
15-bit
16-bit
8-bit
8-bit
8-bit
8-bit
12-bit
12-bit
16-bit
Transfer Mode
Non-multiplexed
Non-multiplexed
Non-multiplexed
2X-multiplexed
2X-multiplexed
3X-multiplexed
2X-multiplexed
2X-multiplexed
2X-multiplexed
2X-multiplexed
Color Space and Depth
RGB 16-bit
RGB 15-bit
YCrCb (24-bit)
RGB 15-bit
RGB 16-bit
RGB 24-bit
YCrCb (24-bit)
RGB 24
RGB 24
RGB 24 (32)
Format Reference
5-6-5 each word
5-5-5 each word
CbY0,CrY1...(CCIR656 style)
5-5-5 over two bytes
5-6-5 over two bytes
8-8-8 over three bytes
Cb,Y0,Cr,Y1,(CCIR656 style)
8-8-8 over two words - ‘C’ version
8-8-8 over two words - ‘I’ version
8-8,8X over two words
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201-0000-024 Rev 2.1, 8/2/99