Siemens SIMATIC PC 670 Equipment Manual page 153

Release 04/02
Display port (LVDS), X400
TFT displays with an LVDS port can be connected to this port. 18-bit displays
having a resolution up to 1024x768 pixels can be connected. The permissible
display clock rate is 20 MHz to 66 MHz. The display is selected automatically
according to the code of the Display Select inputs. The display supply voltages
(3,3 V and 5 V) are connected as a function of the requirements for the connected
displays via the graphics controller. The maximum cable length is 50 cm at a
transfer rate of 455 MHz. Specific cable properties have to be taken into account
for differential cable pairs in accordance with the LVDS specification.
Pin
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Panel PC 670 Computing Unit, Equipment Manual
Short Name Meaning
P5V_D_fused +5V (fused) Display VCC
P5V_D_fused +5V (fused) Display VCC
RXIN0– LVDS output signal bit 0 (-)
RXIN0+ LVDS output signal bit 0 (+)
P3V3_D_fused +3.3V (fused) display VCC
P3V3_D_fused +3.3V (fused) display VCC
RXIN1– LVDS output signal bit 1 (-)
RXIN1+ LVDS output signal bit 1 (+)
GND Chassis ground
GND Chassis ground
RXIN2– LVDS output signal bit 2 (-)
RXIN2+ LVDS output signal bit 2 (+)
GND Chassis ground
GND Chassis ground
RXCLKIN– LVDS clock signal (–)
RXCLKIN+ LVDS clock signal (+)
GND Chassis ground
GND Chassis ground
Reserved
Reserved
Hardware Information
Input/Output
Output
Output
Output
Output
Output
Output
Output
Output
-
-
Output
Output
-
-
Output
Output
-
-
7-21