Samsung S3C2416 User Manual page 563

S3C2416X RISC MICROPROCESSOR
8.1.18 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
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)
[4:2] 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
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
21-43