at91sam9263 ATMEL Corporation, at91sam9263 Datasheet - Page 878

• Manufacturer Part Number: at91sam9263
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

Figure 43-4. TFT Panel Timing, CLKMOD = 0, VPW = 2, VBP = 2, VFP = 1
Figure 43-5. TFT Panel Timing (Line Expanded View), CLKMOD=1
878
LCDHSYNC
LCDVSYNC
LCDVSYNC
LCDHSYNC
LCDDOTCK
LCDDOTCK
LCDVSYNC
LCDHSYNC
LCDDEN
LCDDOTCK
LCDDEN
LCDDEN
AT91SAM9263 Preliminary
LCDD
LCDD
LCDD
VHDLY+1
VHDLY+1
Vertical Back Porch = VBP Lines
VHDLY+1
--------------------------- -
f
LCDVSYNC
Usually the LCD_FRM rate is about 70 Hz to 75 Hz. It is given by the following equation:
where:
In STN Mode:
1
• HOZVAL determines de number of LCDDOTCK cycles per line
• LINEVAL determines the number of LCDHSYNC cycles per frame, according to the
HPW+1
HPW+1
expressions shown below:
(VPW+1) Lines
=
⎛
⎝
VHDLY
-------------------------------------------------------------------------------------------------------------------- -
HBP+1
HBP+1
HOZVAL
+
1 PCLK
HPW
1 PCLK
=
Horizontal_display_size
-------------------------------------------------------------- - 1
+
Line Period
Line Period
f
HBP
LCDDOTCK
Number_data_lines
Frame Period
1/2 PCLK 1/2 PCLK
+
1/2 PCLK 1/2 PCLK
HOZVAL
+
HOZVAL+1
HFP
HOZVAL+1
–
+
5
⎞ VBP
⎠
(
+
LINEVAL
Vertical Fron t Porch = VFP Lines
+
6249D–ATARM–20-Dec-07
VFP
HFP+1
HFP+1
+
1
)