GU-3900B series “General Function” Software Specification
5
Graphic DMA mode (Applicable for Parallel interface only)
5.1
Displayable image types
5.1.1
Graphic display
Depends on model – refer to 3
VFD Module model-specific information.
5.2
Display Memory
Size: Refer to 3.2
Display Memory configuration.
The portion of memory which is displayed is selected using the “Display start address” command.
Display Memory is a roll configuration. In areas of the display screen that would exceed the Display
Memory, the contents from 0000h are displayed.
Example for 256×64 dot module:
5.3
Protocol
High-speed graphic display is possible by using the parallel interface for data input.
The Graphic DMA mode protocol is described below.
Display waits until a valid “Header (STX)” + “Header 2” combination is received. The module only
processes packets with an address that matches the display's address set by DIP-SW + MSW.
Using this mode, a maximum of 255 displays, addressed by DIP-SW and MSW settings, can be
controlled individually.
Packets addressed to FFh are processed by all connected displays.
Header 1
Header 2
Address
Command/Data
STX (02h)
44h
00h – FFh
00h – FFh
1 byte
1 byte
1 byte
n byte(s)
- 64
-
x
0
1
255
256
510 511
256 dots
512 dots
64 dots
D7
D6
D5
D4
D3
D2
D1
D0
y 0
1
7
.
.
.
0
0
0
0
h
0
0
0
1
h
0
0
0
8
h
0
0
0
9
h
0
7
F
8
h
0
7
F
9
h
0
8
0
0
h
0
8
0
1
h
0
F
F
0
h
0
F
F
1
h
0
F
F
8
h
0
F
F
9
h
0
0
0
7
h
0
0
0
F
h
0
7
F
F
h
0
8
0
7
h
0
F
F
7
h
0
F
F
F
h
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相关PDF资料
GU256X128E-3900
MODULE VF GRAPHIC DISPLY 256X128
GU256X32-800A
MODULE VF GRAPHIC DISPLAY 256X32
HFA60MB60C
DIODE HEXFRED 600V 50A D-60
HFA70NC60CSL
DIODE HEXFRED 600V 56A D61-8-SL
HFA70NC60C
DIODE HEXFRED 600V 56A D61-8
HFA75MB40C
DIODE HEXFRED 400V 75A D-60
HFA80NC40CSL
DIODE HEXFRED 400V 85A D61-8-SL
HFA80NC40CSM
DIODE HEXFRED 400V 85A D61-8-SM
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