Phytec phyCORE-PXA270, Hardware Manual

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LCD Interface
9 LCD Interface
There is an active TFT-LCD interface on the Carrier Board for
controlling displays with 18-bit color depth (6 each for red, green and
blue). The LCD signals are decoupled from the PXA270 controller
with 74LVC254 line driver circuits. The controller supports 18-bit and
16-bit color information. The circuitry on the Carrier Board only uses
16-bit color information. The least significant bits for decoding the
blue and red color signal are connected to GND.
J15
J27
J3
U12
D7
U13
R60
U2
U22
U21
XT2
U10
J10
PXA270
XT1
U3
L1
J23
R103
J9
J21
Q6
J6
J32
X2
D6
Q1
U7
J30
R13
J16 J17 J29
U5
XT4
J26
U15
J11
U20
J2
J28
J19
J20
Hello
PWM0
L_D0-15
L_CTRL
Inverter
Figure 24: Active TFT LCD Connection
The Sharp display used on the Carrier Board offers the possibility of
adjusting the display size and position via two inputs. The control
PLD U7 enables configuration of these inputs over internal registers.
A TFT display can be connected to the Carrier Board with the help of
a 33-pin ribbon cable at header connector X35. An LCD-001 adapter
board is necessary when using the Sharp TFT display in order to
convert the Hirose connector plug to a ribbon cable connector plug.
Furthermore, there is a 2.0 mm universal connector plug on the board
at X33, where other display types can be adapted to the PXA270's
LCD port.
©
PHYTEC Meßtechnik GmbH 2006 L-668e_1
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