27 GRAPHICS ENGINE (GE)
27-42
Seiko Epson Corporation
S1C33L26 TECHNICAL MANUAL
D[18:16] Write Effect Setting[2:0] Bits
Selects a writing effect. (See Section 27.3.5.)
5.12.2 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 (Radius)
D[31:12] Reserved
D[11:0] Radius[11:0] Bits
Specifies the radius in number of pixels.
Argument 3 (Coordinates of center)
D[31:16] Y Coordinate[15:0] Bits
Specifies the Y coordinate of the center.
D[15:0] X Coordinate[15:0] Bits
Specifies the X coordinate of the center.
Work area
(Clipping area)
X
Y
(0, 0)
r
(X, Y)
5.12.2 Drawing Solid Filled Circle
Figure 27.
FONT_CFG Command (Font Configuration)
27.5.13
Bit
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
CMD
0x20
0xffff
ARG1
reserved
Font Index Offset
re
se
rv
ed
Height
re
se
rv
ed
Width
ARG2
Character Color
Background color
ARG3
Font Set Base Address