Samsung S5PC100 User Manual page 1105

S5PC100 USER'S MANUAL (REV1.0)
6.74 WINDOW 3 BLENDING EQUATION CONTROL REGISTER (BLENDEQ3, R/W, ADDRESS = 0XEE00_
024C)
BLENDEQ3
Reserved
Q_FUNC
Reserved
P_FUNC
Reserved
B_FUNC
Reserved
A_FUNC
NOTE: Refer to Figure 5. Blending equation
background = Window 012, foreground = Window 3 (in Blend Equation 3)
alphaA, alphaB is decided by BPPMODE_F, BLD_PIX, ALPHA_SEL @WINCONx and WxPAL @WPALCON.
Bit
[31:22] Reserved
[21:18] Constant used in alphaB(alpha value of *background)
0000 = 0 (zero)
0001 = 1 (max)
0010 = **alphaA (alpha value of *foreground)
0011 = 1 – alphaA
0100 = alphaB
0101 = 1 – alphaB
011x = reserved
100x = reserved
1010 = A (foreground color data)
1011 = 1 – A
1100 = B (background color data)
1101 = 1 – B
111x = reserved
[17:16] Reserved
[15:12] Constant used in alphaA
Same as above (refer the COEF_Q)
[11:10] Reserved
[9:6] Constant used in B
Same as above (refer the COEF_Q)
[5:4] Reserved
[3:0] Constant used in A
Same as above (refer the COEF_Q)
Description
DISPLAY CONTROLLER
Reset Value
0x000
0x0
00
0x0
00
0x3
00
0x2
9.1-91