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PRELIMINARY
DISPLAY CONTROLLER
S3C6400X RISC MICROPROCESSOR
14-38
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
2. Video Clock Source is selected by CLKSEL_F register
- [5]
Reserved
0
CLKDIR
[4]
Select the clock source as direct or divide using CLKVAL_F register
0 = Direct clock (frequency of VCLK = frequency of Clock source)
1 = Divided by CLKVAL_F
0x0
CLKSEL_F
[3:2]
Select the Video Clock source
00 = HCLK
01 = LCD video Clock (from SYSCON)
10 = reserved
11 = 27MHz Ext Clock input
0
ENVID
[1]
Video output and the logic immediately enable/disable.
0 = Disable the video output and the Display control signal.
1 = Enable the video output and the Display control signal.
0
ENVID_F
[0]
Video output and the logic enable/disable at current frame end.
0 = Disable the video output and the Display control signal.
1 = Enable the video output and the Display control signal.
* If set on and off this bit, then you will read “H” and video controller
enable until the end of current frame.
0
Note 1:
Display On : ENVID & ENVID_F set to “1”
Direct Off : ENVID & ENVID_F set to “0” simultaneously
Per Frame Off: ENVID_F set “0” & ENVID set ”1”
Caution:
In normal display mode, SEL_BYPASS@ MIFPCON( 0x7710_800C) register must be set “0”.
Video Main Control 1 Register
Register
Address
R/W
Description
Reset Value
VIDCON1 0x77100004
R/W Video
control 1 register
0x0000_0000
VIDCON1
Bit
Description
Initial state
LINECNT (read
only)
[26:16]
Provide the status of the line counter (read only)
Up count from 0 to LINEVAL
0
FSTATUS
[15]
Field Status (read only).
0 = ODD Field 1 = EVEN Field
0
VSTATUS
[14:13]
Vertical Status (read only).
00 = VSYNC 01 = BACK Porch
10 = ACTIVE 11 = FRONT Porch
0
- [10:8]
Reserved
IVCLK
[7]
This bit controls the polarity of the VCLK active edge.
0 = RGB type LCD driver gets the video data at VCLK falling
edge
1 = RGB type LCD driver gets the video data at VCLK rising
0