STPCI2 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
STPCI2 Datasheet PDF : 108 Pages
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STPC® ATLAS
6.3.9. VGA INTERFACE
The STPC integrates a voltage reference and
video buffers. The amount of external devices is
then limited to the minimum as described in the
Figure 6-15.
All the resistors and capacitors have to be as close
as possible to the STPC while the circuit protector
DALC112S1 must be close to the VGA connector.
The DDC[1:0] lines, not represented here, have
also to be protected when they are used on the
VGA connector.
Figure 6-15. Typical VGA implementation
COL_SEL can be used when implementing the
Picture-In-Picture function outside the STPC, for
example when multiplexing an analog video
source. In that case, the CRTC of the STPC has to
be genlocked to this analog source.
DCLK is usually used by the TFT display which
has RGB inputs in order to synchronise the picture
at the level of the pixel.
When the VGA interface is not needed, the signals
R, G, B, HSYNC, VSYNC, COMP, RSET can be
left unconnected, VSS_DAC and VDD_DAC must
then be connected to GND.
VDD_DAC
) COMP
t(s VREF_DAC
RSET
roduc VSS_DAC
olete P COL_SEL
s DCLK
b HSYNC
O VSYNC
) - R
t(s G
roducB
10nF
2.5V
143
1% 100nF 100nF 47uF
AGND
75 1%
DALC112S1
Obsolete P 3.3V AGND
85/108
1
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