Table 7-79 Switching Characteristics for LCD Raster Mode
(see Figure 7-82 through Figure 7-85)
NO. |
PARAMETER |
OPP50 |
OPP100 |
UNIT |
MIN |
MAX |
MIN |
MAX |
1 |
tc(LCD_PCLK) |
Cycle time, pixel clock |
15.8 |
|
7.9 |
|
ns |
2 |
tw(LCD_PCLKH) |
Pulse duration, pixel clock high |
0.45tc |
0.55tc |
0.45tc |
0.55tc |
ns |
3 |
tw(LCD_PCLKL) |
Pulse duration, pixel clock low |
0.45tc |
0.55tc |
0.45tc |
0.55tc |
ns |
4 |
td(LCD_PCLK-LCD_DATAV) |
Delay time, LCD_PCLK to LCD_DATA[23:0] valid (write) |
|
3.0 |
|
1.9 |
ns |
5 |
td(LCD_PCLK-LCD_DATAI) |
Delay time, LCD_PCLK to LCD_DATA[23:0] invalid (write) |
–3.0 |
|
–1.7 |
|
ns |
6 |
td(LCD_PCLK-LCD_AC_BIAS_EN) |
Delay time, LCD_PCLK to LCD_AC_BIAS_EN |
–3.0 |
3.0 |
–1.7 |
1.9 |
ns |
8 |
td(LCD_PCLK-LCD_VSYNC) |
Delay time, LCD_PCLK to LCD_VSYNC |
–3.0 |
3.0 |
–1.7 |
1.9 |
ns |
10 |
td(LCD_PCLK-LCD_HSYNC) |
Delay time, LCD_PCLK to LCD_HSYNC |
–3.0 |
3.0 |
–1.7 |
1.9 |
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 (LPP_B10 + 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 (PPLMSB + PPLLSB)
LCD_AC_BIAS_EN timing is derived through the following parameter in the LCD (RASTER_TIMING_2) register:
The display format produced in raster mode is shown in Figure 7-81. 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 I/O signal LCD_VSYNC. The beginning of each new line is denoted by the activation of I/O signal LCD_HSYNC.
Figure 7-82 LCD Raster-Mode Active
A. The dashed portion of LCD_PCLK is only shown as a reference of the internal clock that sequences the other signals.
Figure 7-83 LCD Raster-Mode Passive