AM3359, AM3358, AM3357, AM3356, AM3354, AM3352
SPRS717H – OCTOBER 2011 – REVISED MAY 2015
7.10.2 LCD Raster Mode
Table 7-76. Switching Characteristics for LCD Raster Mode
(see
through
OPP50
OPP100
NO.
PARAMETER
UNIT
MIN
MAX
MIN
MAX
1
t
c(LCD_PCLK)
Cycle time, pixel clock
15.8
7.9
ns
2
t
w(LCD_PCLKH)
Pulse duration, pixel clock high
0.45t
c
0.55t
c
0.45t
c
0.55t
c
ns
3
t
w(LCD_PCLKL)
Pulse duration, pixel clock low
0.45t
c
0.55t
c
0.45t
c
0.55t
c
ns
Delay time, LCD_PCLK to LCD_DATA[23:0] valid
4
t
d(LCD_PCLK-LCD_DATAV)
3.0
1.9
ns
(write)
Delay time, LCD_PCLK to LCD_DATA[23:0] invalid
5
t
d(LCD_PCLK-LCD_DATAI)
–3.0
–1.7
ns
(write)
6
t
d(LCD_PCLK-LCD_AC_BIAS_EN)
Delay time, LCD_PCLK to LCD_AC_BIAS_EN
–3.0
3.0
–1.7
1.9
ns
7
t
t(LCD_AC_BIAS_EN)
Transition time, LCD_AC_BIAS_EN
0.5
2.4
0.5
2.4
ns
8
t
d(LCD_PCLK-LCD_VSYNC)
Delay time, LCD_PCLK to LCD_VSYNC
–3.0
3.0
–1.7
1.9
ns
9
t
t(LCD_VSYNC)
Transition time, LCD_VSYNC
0.5
2.4
0.5
2.4
ns
10
t
d(LCD_PCLK-LCD_HSYNC)
Delay time, LCD_PCLK to LCD_HSYNC
–3.0
3.0
–1.7
1.9
ns
11
t
t(LCD_HSYNC)
Transition time, LCD_HSYNC
0.5
2.4
0.5
2.4
ns
12
t
t(LCD_PCLK)
Transition time, LCD_PCLK
0.5
2.4
0.5
2.4
ns
13
t
t(LCD_DATA)
Transition time, LCD_DATA
0.5
2.4
0.5
2.4
ns
Frame-to-frame timing is derived through the following parameters in the LCD (RASTER_TIMING_1)
register:
•
Vertical front porch (VFP)
•
Vertical sync pulse width (VSW)
•
Vertical back porch (VBP)
•
Lines per panel (L LPP)
Line-to-line timing is derived through the following parameters in the LCD (RASTER_TIMING_0) register:
•
Horizontal front porch (HFP)
•
Horizontal sync pulse width (HSW)
•
Horizontal back porch (HBP)
•
Pixels per panel ( PPLLSB)
LCD_AC_BIAS_EN timing is derived through the following parameter in the LCD (RASTER_TIMING_2)
register:
•
AC bias frequency (ACB)
The display format produced in raster mode is shown in
. An entire frame is delivered one line
at a time. The first line delivered starts at data pixel (1, 1) and ends at data pixel (P, 1). The last line
delivered starts at data pixel (1, L) and ends at data pixel (P, L). The beginning of each new frame is
denoted by the activation of IO signal LCD_VSYNC. The beginning of each new line is denoted by the
activation of IO signal LCD_HSYNC.
204
Peripheral Information and Timings
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