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S-MOS Systems, Inc. 2460 North First Street San Jose, CA 95131 Tel: (408) 922-0200 Fax: (408) 922-0238
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3.3.5.2 – 3.3.7.1
3.0 Command Description
3.3.5.2 DM1, DM2
DM1 and DM2 specify the display mode of screen
blocks 1 and 3, respectively.
DM1/2 = 0:
Text mode
DM1/2 = 1:
Graphics mode
Note 1:
Screen blocks 2 and 4 can only display graphics.
Note 2:
DM1 and DM2 must be the same, regardless of the
setting of W/S.
3.3.5.3 OV
Specifies two- or three-layer composition in graphics
mode.
OV = 0:
Two-layer composition
OV = 1:
Three-layer composition
Set OV to 0 for mixed text and graphics mode.
3.3.6 CGRAM ADR
Specifies the CG RAM start address.
MSB
LSB
C
0
1
0
1
1
1
0
0
P1
A7
A6
A5
A4
A3
A2
A1
A0 (SAGL)
P2
A15 A14 A13 A12 A11 A10
A9
A8 (SAGH)
Figure 25. CGRAM ADR parameters
Note:
See Section 6 for information on the SAG parameters.
3.3.7 HDOT SCR
While the scroll command only allows scrolling by
characters, HDOT SCR allows the screen to be scrolled
horizontally by pixels. HDOT SCR cannot be used on
individual layers.
MSB
LSB
C
0
1
0
1
1
0
1
0
P1
0
0
0
0
0
D2
D1
D0
3.3.7.1 D0 to D2
Specifies the number of pixels to scroll. The C/R
parameter has to be set to one more than the number
of horizontal characters before using HDOT SCR.
Smooth scrolling can be simulated if the controlling
microprocessor repeatedly issues the HDOT SCR
command to the SED1330F/1335F/1336F. See Sec-
tion 5.5 for more information on scrolling the display.
Table 20. Scroll step selection
P1
D2
0
0
0
↓
1
1
Number of pixels
to scroll
0
1
2
↓
6
7
HEX
00
01
02
↓
06
07
D1
0
0
1
↓
1
1
D0
0
1
0
↓
0
1
Figure 26. HDOT SCR parameters