27 GRAPHICS ENGINE (GE)
S1C33L26 TECHNICAL MANUAL
Seiko Epson Corporation
27-29
D19
Sync Enable Bit
Enables or disables the LCDC synchronization function. (See Section 27.3.5.)
1: Enabled (Synchronized)
0: Disabled (Not synchronized)
D[18:16] Write Effect Setting[2:0] Bits
Selects a writing effect. (See Section 27.3.5.)
5.5.2 Writing Effect Selections
Table 27.
Write Effect Setting[2:0] bits
Writing effect
0x7–0x4
Reserved
0x3
Rewrite
0x2
Mesh
0x1
XOR
0x0
Normal (Fill)
D[15:0] Color[15:0] Bits
Specifies the drawing color.
The effective bits depend on the GE bpp mode (set using DISP_BPP[2:0]/GE_DISP_CFG register).
16 bpp mode: Color[15:0] (D[15:0]) bits are effective
8 bpp mode: Color[7:0] (D[7:0]) bits are effective
4 bpp mode: Color[3:0] (D[3:0]) bits are effective
2 bpp mode: Color[1:0] (D[1:0]) bits are effective
1 bpp mode: Color0 (D0) bit is effective
The color data may be modified before being written to the work area according to the palette and/or
writing effect settings. (See Section 27.3.5.)
Argument 2 (X and Y coordinates)
D[31:16] Y Coordinate[15:0] Bits
Specifies the Y coordinate of the dot to be drawn.
D[15:0] X Coordinate[15:0] Bits
Specifies the X coordinate of the dot to be drawn.
Work area
(Clipping area)
X
Y
(0, 0)
(X, Y)
5.5.1 Dot Drawing
Figure 27.