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Direct Drive LCD Design Guide
Index
1. INTRODUCTION................................................................................................................................................ 3
1.1 DIRECT DRIVE LCD OVERVIEW...................................................................................................................... 3
1.1.1 Philosophy ...................................................................................................................................3
1.1.2 Capabilities..................................................................................................................................3
2. DRIVER CONFIGURATION............................................................................................................................. 4
2.1 LCD DIRECT DRIVE CONFIGURATION MACROS.............................................................................................. 4
2.2 FRAME BUFFER CONFIGURATION.................................................................................................................... 6
2.2.1 FRAME_HEIGHT .......................................................................................................................6
2.2.2 FRAME_WIDTH .........................................................................................................................6
2.2.3 V_LINES_INVERT.......................................................................................................................6
2.2.4 H_DOT_INVERT.........................................................................................................................6
2.2.5 PANEL_ROTATE .........................................................................................................................6
2.2.6 LCD_FRAMES ............................................................................................................................6
2.2.7 MAX_FRAME_REGIONS ...........................................................................................................6
2.3 DRIVER MODE SELECTION.............................................................................................................................. 8
2.3.1 SRAM_DD...................................................................................................................................8
2.3.2 SRAM_NOMUX_DD...................................................................................................................8
2.3.3 SDRAM_DD ................................................................................................................................8
2.3.4 SDRAM_CLUSTER_DD .............................................................................................................8
2.3.5 Dot Clock Hardware Connections...............................................................................................8
2.4 DRIVER MODE CONFIGURATION ..................................................................................................................... 9
2.4.1 DOT_CLOCK_FREQUENCY_DATA..........................................................................................9
2.4.2 DOT_CLOCK_FREQUENCY_BLANK.......................................................................................9
2.4.3 DESIRED_FRAME_RATE ..........................................................................................................9
2.4.4 MINIMUM_MCU_ACCESS_PCT...............................................................................................9
2.5 LCD PANEL CONFIGURATION..........................................................................................................................9
2.5.1 DOT_INVERT..............................................................................................................................9
2.5.2 V_LINES_xx and H_DOT_xx ......................................................................................................9
2.6 LCD PLATFORM CONFIGURATION................................................................................................................. 10
2.6.1 FRAME_CS ...............................................................................................................................10
2.6.2 FRAME_BUS_CYCLES.............................................................................................................10
2.6.3 CAS_LATENCY .........................................................................................................................10
2.6.4 SDRAM_PAGE_SIZE ................................................................................................................10
2.6.5 EDMAC_DD..............................................................................................................................10
2.6.6 Xxxx_PORT ...............................................................................................................................10
2.6.7 Xxxx_PIN...................................................................................................................................10
2.6.8 Xxxx_INTC ................................................................................................................................10
2.6.9 Xxxx_VECT................................................................................................................................10
2.6.10 Xxxx_TPU_CHANNEL..............................................................................................................11
2.6.11 Xxxx_TPU_PIN .........................................................................................................................11
3. TYPICAL LCD PANEL CONNECTIONS...................................................................................................... 12
3.1 LCD PANEL INTERFACE ................................................................................................................................. 12
3.1.1 Power Supplies ..........................................................................................................................12
3.1.2 Clock..........................................................................................................................................12
3.1.3 HSync.........................................................................................................................................12
3.1.4 VSync.........................................................................................................................................12
3.1.5 Data Enable...............................................................................................................................13
3.1.6 RGB (Red Green Blue) Data .....................................................................................................13
3.1.7 Touch Screen..............................................................................................................................13
3.2 HARDWARE DESIGN...................................................................................................................................... 14
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