Preliminary
S3C2451X RISC MICROPROCESSOR
LCD
CONTROLLER
22-35
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.
Video Main Control 1 Register
Register Address
R/W
Description
Reset
Value
VIDCON1 0x4C800004
R/W
Video
control 2 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
Reserved [15]
Reserved
0
VSTATUS
[14:13]
Vertical Status (read only).
00 = VSYNC 01 = BACK Porch
10 = ACTIVE 11 = FRONT Porch
0
HSTATUS
[12:11]
Horizontal Status (read only).
00 = HSYNC 01 = BACK Porch
10 = ACTIVE 11 = FRONT Porch
0
Reserved [10:8]
Reserved
IVCLK
[7]
This bit controls the polarity of the VCLK active edge.
0 = The video data is fetched at VCLK falling edge
1 = The video data is fetched at VCLK rising edge
0
IHSYNC
[6]
This bit indicates the HSYNC pulse polarity.
0 = normal(active high) 1 = inverted(active low)
0
IVSYNC
[5]
This bit indicates the VSYNC pulse polarity.
0 = normal(active high) 1 = inverted(active low)
0
IVDEN
[4]
This bit indicates the VDEN signal polarity.
0 = normal(active high) 1 = inverted(active low)
0
Reserved [3:0]
Reserved
0x0
VIDEO Time Control 0 Register
Register Address
R/W
Description
Reset
Value
VIDTCON0 0x4C800008
R/W
Video
time control 1 register
0x0000_0000
VIDTCON0 Bit
Description
Initial
State
VBPD
[23:16]
Vertical back porch is the number of inactive lines at the start of a
frame, after vertical synchronization period. (Period : VBPD +1)
0x00
VFPD
[15:8]
Vertical front porch is the number of inactive lines at the end of a
frame, before vertical synchronization period. (Period : VFPD +1)
0x00
VSPW
[7:0]
Vertical sync pulse width determines the VSYNC pulse's level
width by counting the number of inactive lines.
(Period : VSPW +1)
0x00