Functional Description
13.3.5 Raster Controller
Raster mode (and the use of this logic) is enabled by setting the MODESEL bit in the LCD control register
(LCD_CTRL).
shows the active external signals when this mode is active.
Table 13-7. Operation Modes Supported by Raster Controller
Data Bus
Register Bits
Interface
Width
RASTER_CTRL[9, 7, 1]
Signal Name
Description
Passive (STN) Mono
4
001
LCD_DATA[3:0]
Data bus
4-bit
LCD_PCLK
Pixel clock
LCD_HSYNC
Horizontal clock(Line Clock)
LCD_VSYNC
Vertical clock (Frame Clock)
LCD_AC_BIAS_EN
AC Bias
LCD_MCLK
Not used
Passive (STN) Mono
8
101
LCD_DATA[7:0]
Data bus
8-bit
LCD_PCLK
Pixel clock
LCD_HSYNC
Horizontal clock(Line Clock)
LCD_VSYNC
Vertical clock (Frame Clock)
LCD_AC_BIAS_EN
AC Bias
LCD_MCLK
Not used
Passive (STN) Color
8
100
LCD_DATA[7:0]
Data bus
LCD_PCLK
Pixel clock
LCD_HSYNC
Horizontal clock(Line Clock)
LCD_VSYNC
Vertical clock (Frame Clock)
LCD_AC_BIAS_EN
AC Bias
LCD_MCLK
Not used
Active (TFT) Color
16
x10
LCD_DATA[15:0]
Data bus
LCD_PCLK
Pixel clock
LCD_HSYNC
Horizontal clock(Line Clock)
LCD_VSYNC
Vertical clock (Frame Clock)
LCD_AC_BIAS_EN
Output enable
LCD_MCLK
Not used
1108
LCD Controller
SPRUH73H – October 2011 – Revised April 2013
Copyright © 2011–2013, Texas Instruments Incorporated