MTV118 View Datasheet(PDF) - Myson Century Inc
Part Name
Description
Manufacturer
MTV118 Datasheet PDF : 30 Pages
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MYSON
TECHNOLOGY
MTV118
TABLE 1. Configuration of Transmission Formats
Address b7
b6
b5
b4
b3
b2
b1
b0 Format
Address Row
1
0
0
x
R3 R2 R1 R0
a,b,c
Bytes of Columnab 0
0
x
C4 C3 C2 C1 C0
a,b
Display
Reg.
Columnc
0
1
x
C4 C3 C2 C1 C0
c
Attribute Row
1
0
1
x
R3 R2 R1 R0
a,b,c
Bytes of Columnab 0
0
x
C4 C3 C2 C1 C0
a,b
Display
Reg.
Columnc
0
1
x
C4 C3 C2 C1 C0
c
User
Row
1
Fonts Columnab 0
RAM
Columnc
0
1
x
x
x
R2 R1 R0
a,b,c
0
C5 C4 C3 C2 C1 C0
a,b
1
C5 C4 C3 C2 C1 C0
c
The data transmission is permitted to change from format (a) to format (b) and (c), or from format (b) to
format (a), but not from format (c) back to format (a) and (b). The alternation between transmission for-
mats is configured as the state diagram shown in Figure 3 on page 5.
0, X
Initiate
Input = b7, b6
1, X
format (a)
1, X ROW
format (c) 0, 1
0, 0 format (b)
0, 0
COL
c
X, X
COL
0, 1
ab X, X
1, X
X, X
DA
c
DA
ab
FIGURE 3. Transmission State Diagram
3.2 Address Bus Administrator
The administrator manages bus address arbitration of internal registers or user font RAM during exter-
nal data write-in. The external data write through serial data interface to registers must be synchronized
by internal display timing. In addition, the administrator also provides automatic incrementation to the
address bus when external writing occurs using format (c).
3.3 Vertical Display Control
The vertical display control can generate different vertical display sizes for most display standards in
current monitors. The vertical display size is calculated with the information of a double character height
bit(CHS) and a vertical display height control register(CH6-CH0).The algorithms of a repeating charac-
ter line display are shown in Tables 2 and 3. The programmable vertical size range is 270 lines to max-
imum 2130 lines.
5/15
MTV118 Revision 2.0 01/01/1999
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