ch7009a ETC-unknow, ch7009a Datasheet - Page 4

• Manufacturer Part Number: ch7009a
• Description: Chrontel Ch7009 Dvi / Tv Output Device
• Manufacturer: ETC-unknow

CHRONTEL
4
Table 1: Pin Description
64-Pin
LQFP
14
15
19
22, 21
25, 24
28, 27
30, 31
35
36
37
38
39
42
43
# Pins Type
1
1
1
2
2
2
2
1
1
1
1
1
1
1
In/Out
In
In
Out
Out
Out
Out
In
Out
Out
Out
Out
In
In
Symbol
SD
SC
VSWING
TDC0,
TDC0*
TDC1,
TDC1*
TDC2,
TDC2*
TLC,
TLC*
ISET
CVBS
Y/G
C/R
CVBS/B
XI / FIN
XO
Description
Serial Data Input / Output
This pin functions as the serial data pin of the IIC interface
port, and uses the DVDD supply.
Serial Clock Input
This pin functions as the clock pin of the IIC interface port,
and uses the DVDD supply.
TMDS
This pin sets the swing level of the DVI outputs. A 2.4K ohm
resistor should be connected between this pin and TGND using
short and wide traces.
TMDS
These pins provide the DVI differential outputs for data
channel 0 (blue).
TMDS
These pins provide the DVI differential outputs for data
channel 1 (green).
TMDS
These pins provide the DVI differential outputs for data
channel 2 (red).
TMDS
These pins provide the differential clock output for the DVI
interface corresponding to data on the TDC[0:2] outputs.
Current Set Resistor Input
This pin sets the DAC current. A 140 ohm resistor should be
connected between this pin and GND (DAC ground) using
short and wide traces.
Composite Video
This pin outputs a composite video signal capable of driving a
75 ohm doubly terminated load.
Luma / Green Output
This pin outputs a selectable video signal. The output is
designed to drive a 75 ohm doubly terminated load. The
output can be selected to be s-video luminance or green .
Chroma / Red Output
This pin outputs a selectable video signal. The output is
designed to drive a 75 ohm doubly terminated load. The
output can be selected to be s-video chrominance or red.
Composite Video / Blue Output
This pin outputs a selectable video signal. The output is
designed to drive a 75 ohm doubly terminated load. The
output can be selected to be composite video or blue.
Crystal Input / External Reference Input
A parallel resonance 14.31818MHz crystal (+ 20 ppm) should
be attached between this pin and XO. However, an external
clock can drive the XI/FIN input.
Crystal Output
A parallel resonance 14.31818MHz crystal (+ 20 ppm) should
be attached between this pin and XI / FIN. However, if an
external CMOS clock is attached to XI/FIN, XO should be left
open.
TM
TM
TM
TM
TM
Link Swing Control
Data Channel 0 Outputs
Data Channel 1 Outputs
Data Channel 2 Outputs
Link Clock Outputs
201-0000-035 Rev 1.1, 5/8/2000
CH7009A