Phytec phyCORE-PXA255, Hardware Manual

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Development Board for phyCORE-PXA255
24 
PHYTEC Meßtechnik GmbH 2004 L-657e_0
The voltage settings and the adjustment of the TFT display can be
carried out in control register 3. The bit POS1 is connected to the R/L
signal of the display while POS2 is connected to the display’s U/D
signal. The data line drivers can be switched to active with LCD_ON.
The supply voltage of the LCD is switched on with LCDPWR.
REG ADDR D7-D4 D3 D2 D1 D0
CTRL 3 0x0c000006 Res POS1 POS2 LCDON LCDPWR
RW R/W=0 R/W R/W R/W R/W
Table 10: PLD U6 Control Register 3
POS1/POS2 The display adjustment is set here. The display can
be mirrored in the X direction as well as the Y
direction with these two bits. If both bits are
changed at the same time, then the image will be
rotated in an 180 degree angle.
LCDON With a "1" (high level) the driver circuits for the
LCD data and control bus are switched active
connected.
LCDPWR Setting this bit turns on the supply voltage for the
TFT display.
Control register 4 controls the external supply voltage
MultiMediaCard 1 on the phyCORE-PXA255.
REG ADDR D7-D4 D3 D2 D1 D0
CTRL 4 0x0c000008 Res Res Res Res MMC1PWR
RW R/W=0 R/W=0 R/W=0 R/W=0 R/W
Table 11: PLD U6 Control Register 4
MMC1PWR Setting this bit turns on the supply voltage for the
MMC card 1.