Samsung Exynos 5 User Manual

Samsung Confidential  
Exynos 5250_UM 15 Display Controller 
 15-39  
15.3.8 VTIME Controller  
VTIME comprises of two blocks, namely: 
 VTIME_RGB_TV for RGB timing control  
 VTIME_I80 for indirect i80 interface timing control 
 
15.3.8.1 RGB Interface Controller 
VTIME generates control signals for the RGB interface:  
 RGB_VSYNC 
 RGB_HSYNC 
 RGB_VDEN 
 RGB_VCLK  
These control signals configure the VIDTCON0/1/2 registers in the VSFR register. 
The VTIME module generates programmable control...

Samsung Confidential  
Exynos 5250_UM 15 Display Controller 
 15-40  
Table 15-6 describes the relation 16-bpp between VCLK and CLKVAL. 
Table 15-6   Relation 16-bpp between VCLK and CLKVAL (TFT, Frequency of Video Clock Source = 300 
MHz)  
CLKVAL 300 MHz/X VCLK 
2 300 MHz/3 100.0 MHz 
3 300 MHz/4 75.0 MHz 
: : : 
63 300 MHz/64 4.6875 MHz 
 
VSYNC, VBPD, VFPD, HSYNC, HBPD, HFPD, HOZVAL, and LINEVAL configure RGB_HSYNC and 
RGB_VSYNC signal. 
The frame rate is the frequency of RGB_VSYNC. The frame rate...

Samsung Confidential  
Exynos 5250_UM 15 Display Controller 
 15-41  
15.3.8.2 I80 Interface Controller 
VTIME_I80 controls display controller for CPU style LDI. It has the following functions: 
 Generates I80 Interface Control Signals 
 CPU style LDI Command Control 
 Timing Control for VDMA and VDPRCS 
 
15.3.8.3 Output Control Signal Generation 
VTIME_I80 generates SYS_CS0, SYS_CS1, SYS_WE, and SYS_RS control signals (For Timing Diagram, refer 
to Figure 15-19). Their timing parameters,...

Samsung Confidential  
Exynos 5250_UM 15 Display Controller 
 15-42  
15.3.9 Setting of Commands 
15.3.9.1 Normal Command 
To execute Normal command, follow these steps: 
Put commands into LDI_CMD0 to 11 (maximum 12 commands). 
Set CMDx_EN in LDI_CMDCON0 to enable normal command  (For example, if you want to enable command 4, 
you have to set CMD4_EN to 0x01). 
Set NORMAL_CMD_ST in I80IFCONB0/1.  
 
The display controller has the following characteristics for command operations: 
 Normal command mode...

Samsung Confidential  
Exynos 5250_UM 15 Display Controller 
 15-43  
15.3.9.1.1 Indirect I80 Interface Trigger 
VTIME_I80 starts its operation when a software trigger occurs. There are two kinds of triggers. However, software 
trigger is generated by setting TRGCON SFR.  
 
15.3.9.2 Interrupt 
Completion of one frame generates Frame Done Interrupt. 
 
15.3.9.2.1 Indirect I80 Interface Output Mode 
The following table shows the output mode of Indirect i80 interface based on mode @ VIDCON0.  
Table 15-7...

Samsung Confidential  
Exynos 5250_UM 15 Display Controller 
 15-44  
15.3.10 Virtual Display 
The display controller supports horizontal or vertical scrolling of the hardware. When the screen scrolls, you 
should change values of LCDBASEU and LCDBASEL (refer to Figure 15-16 for more information). However, do 
not change the values of PAGEWIDTH and OFFSIZE. The size of video buffer that stores the image should be 
larger than the screen of the LCD panel.  
Figure 15-16 illustrates an example of scrolling...

Samsung Confidential  
Exynos 5250_UM 15 Display Controller 
 15-45  
15.3.11 RGB Interface Specification 
15.3.11.1 Signals 
Table 15-8 describes the RGB I/F signal. 
Table 15-8   RGB I/F Signal Description 
Signal Input/Output Description 
LCD_HSYNC Output (Internal I/F) Horizontal Sync. Signal 
LCD_VSYNC Output (Internal I/F) Vertical Sync. Signal 
LCD_VCLK Output (Internal I/F) LCD Video Clock 
LCD_VDEN Output (Internal I/F) Data Enable 
LCD_VD[23:0] Output (Internal I/F) YCbCr Data Output...

Samsung Confidential  
Exynos 5250_UM 15 Display Controller 
 15-46  
15.3.11.3 Parallel Output (Internal I/F) 
This section describes general 24-bit output 
 
15.3.11.3.1 General 24-bit Output 
Figure 15-18 illustrates the RGB interface timing (RGB parallel). 
 
    Figure 15-18   RGB Interface Timing (RGB Parallel) 
  InValid DataInvalid Data
RGB_HSYNC
RGB_VCLK
RGB_DATA [23:16]
RGB_VDEN
HACTHFHBHS
1 Line
Display
N
M
R0
G0B0
Image data
N
M
Image SourceOutput
Parallel
(general)
R0
G0B0
InValid...

Samsung Confidential  
Exynos 5250_UM 15 Display Controller 
 15-47  
15.3.12 LCD Indirect i80 System Interface 
15.3.12.1 Signals 
Signal Input/Output Description 
SYS_VD[17:0] Input/Output (Internal I/F) Video Data 
SYS_CS0 Output (Internal I/F) Chip select for LCD0 
SYS_CS1 Output (Internal I/F) Chip select for LCD1 
SYS_WE Output (Internal I/F) Write enable 
SYS_OE Output (Internal I/F) Output enable 
SYS_RS/SYS_ADD[0] Output (Internal I/F) Address Output 
SYS_ADD[0] is Register/ State select 
NOTE:...

Samsung Confidential  
Exynos 5250_UM 15 Display Controller 
 15-48  
15.3.12.2 Indirect i80 System Interface WRITE Cycle Timing 
 
    Figure 15-19   Indirect i80 System Interface WRITE Cycle Timing 
  
 LCD_CS_SETUP+1
LCD_WR_SETUP+1
LCD_WR_ACT+1
LCD_WR_HOLD+1
VCLK(internal)
SYS_RS
SYS_CSn
SYS_WE
SYS_VD
LCD_CS_SETUP=0,LCD_WR_SETUP=0,LCD_WR_ACT=0,LCD_WR_HOLD=0