Samsung S3C2451X User Manual page 583

S3C2451X RISC MICROPROCESSOR
VIDEO interrupt Control Register
Register
VIDINTCON 0x4C8000AC
VIDINTCON
FIFOINTERVAL [25:20]
SYSMAINCON
SYSSUBCON
SYSIFDONE
FRAMESEL0 [16:15]
FRAMESEL1 [14:13]
INTFRMEN
FIFOSEL [11:5]
FIFOLEVEL [4:2]
INTFIFOEN
INTEN
Frame interrupt (SUBINT_LCD3) has two interrupt sources, which are Frame interrupt0 and 1.
NOTE:
For example, if FRAMESEL0 is '00b' and FRAMESEL1 is '00b', then Frame interrupt (SUBINT_LCD3) is
asserted at the start of RGB_VSYNC. If FRAMESEL0 is '00b' and FRAMESEL1 is '01b', then Frame
interrupt (SUBINT_LCD3) is asserted twice at the start of RGB_VSYNC and BACK porch.
Address R/W
R/W Indicate the Video interrupt control register
Bit
These bits control the interval of the FIFO interrupt.
[19] Sending complete interrupt enable bit to Main LCD
0 = Interrupt Disable.
1 = Interrupt Enable.
[18] Sending complete interrupt enable bit to Sub LCD
0 = Interrupt Disable.
1 = Interrupt Enable.
[17] i80-System Interface Interrupt Enable control (only for i80-
System Interface mode).
0 = Interrupt Disable.
1 = Interrupt Enable.
Video Frame Interrupt 0 (SUBINT_LCD3) at start of :
00 = BACK Porch
10 = ACTIVE
Video Frame Interrupt 1 (SUBINT_LCD3) at start of :
00 = None
10 = VSYNC
[12] Video Frame interrupts (SUBINT_LCD3) Enable control bit.
0 = Video Frame Interrupt Disable
1 = Video Frame Interrupt Enable
FIFO Interrupt control bit, each bit has the meaning of
[11:7] Reserved
[ 6] Window 1 control ( 0: disable, 1: enable)
[ 5] Window 0 control ( 0: disable, 1: enable)
Video FIFO Interrupt (SUBINT_LCD2) Level Select
000 = 25% left
010 = 75% left
[1] LCD FIFO interrupt (SUBINT_LCD2) Enable control bit.
0 = LCD FIFO Level Interrupt Disable
1 = LCD FIFO Level Interrupt Enable
[0] LCD interrupt (INT_LCD) Enable control bit.
0 = LCD Interrupt Disable
1 = LCD Interrupt Enable
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.
Description
Description
01 = VSYNC
11 = FRONT Porch
01 = BACK Porch
11 = FRONT Porch
001 = 50% left
011 = empty
LCD CONTROLLER
Reset Value
0x3F00000
Initial state
100 = full
0x3F
0
0
0
0
0
0
0
0
0
0
22-43