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PDF MTV048 Data sheet ( Hoja de datos )
| Número de pieza | MTV048 | |
| Descripción | On-Screen-Display Controller for CRT/LCD Monitor | |
| Fabricantes | Myson | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MTV048 (archivo pdf) en la parte inferior de esta página. Total 19 Páginas | ||
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MYSON
TECHNOLOGY
On-Screen-Display Controller
for CRT/LCD Monitor
MTV048
(Rev 0.9)
FEATURES
• Software control for CRT/LCD applications.
• Full screen self-test pattern generator with programmable pattern color.
• On-chip PLL circuitry (CRT) or external pixel clock input (LCD) up to 150 MHz.
• Horizontal SYNC input up to 150 KHz.
• Programmable horizontal resolutions up to 1524 dots per display line.
• Full screen display consists of 15 (rows) by 30 (columns).
• 12x16 or 12x18 dot matrix selection.
• A total of 384 fonts including 360 standard fonts, 16 multi-color fonts and 8 user fonts.
• 8 color selections for character foreground, background and window color.
• Character button boxes with programmable box length.
• Character bordering, shadowing and blinking effect for display.
• Full-screen character double width control.
• Double character height and/or width control per row.
• Programmable positioning for display screen center.
• Row to row spacing control per row to avoid expansion distortion.
• 4 programmable background windows with multi-level operation and programmable shadow width/height/color.
• Software clear bit for full-screen erasing.
• Programmable adaptive approach to handle H, V sync collision automatically by hardware.
• Fade-in/fade-out or blend-in/blend-out effects.
• Compatible with SPI bus or I2C interface with address 7AH (slave address is mask option).
• 5V or 3.3V power supply.
• 16-pin PDIP/SOP package.
GENERAL DESCRIPTION
MTV048 is designed for monitor applications to display built-in fonts onto monitor screens. The display operation
occurs by transferring data and controls information from the micro controller to RAM through a serial data
interface. It can execute a full-screen display automatically, as well as specific functions such as character
background, bordering, shadowing, blinking, double height and width, font-by-font color control, button boxes,
frame positioning, frame size control by character height and row-to-row spacing, horizontal display resolution, full-
screen erasing, fade-in/fade-out effect, windowing effect, shadowing on window and full-screen self-test pattern
generator.
MTV048 provides 384 fonts including 360 standard fonts, 16 multi-color fonts and 8 user fonts and 2 font sizes,
12x16 or 12x18 for more efficacious applications. The full OSD menu is formed by 15 rows x 30 columns, which
can be positioned anywhere on the monitor screen by changing vertical or horizontal delay.
BLOCK DIAGRAM
SSB
SCK
SDA
VFLB
HFLB
SERIAL DATA
INTERFACE
9 RAMADDR
R/WEN
8 DATA
VERTICAL
ROW
DISPLAY CONTROL
DISPLAY & ROW
CONTROL
REGISTERS
(RAM)
9 ROMADDR
FONTS ROM &
USER FONTS RAM
SHADOW LUMINANCE & BORDER
LUMA GENERATOR
HORIZONTAL
COLUMN
DISPLAY CONTROL
WINDOWS & FRAME WINDOW
CONTROL
COLOR ENCODER
ROUT
GOUT
BOUT
FBKG
INT
VCO
RP
PHASE LOCK LOOP
VCLK
This datasheet contains new product information. Myson Technology reserves the rights to modify the product specification without
notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product.
Rev 0.9
- 1 - 2001/03/15
1 page  
MYSON
TECHNOLOGY
MTV048
(Rev 0.9)
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 formats is
configured as the state diagram shown in Figure 3 .
FIGURE 3. Transmission State Diagram
3.2 Address Bus Administrator
The administrator manages bus address arbitration of internal registers or user fonts RAM during external
data write in. The external data write through serial data interface to registers must be synchronized by inter-
nal display timing. In addition, the administrator also provides automatic increment to address bus when
external write 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 double character height bit (CHS),
vertical display height control register (CH6-CH0). The algorithms of repeating character line display are
shown as Table 2 and Table 3. The range of programmable vertical size is 270 lines to 2130 lines maximum.
The vertical display center for full screen display could be figured out according to the information of vertical
starting position register (VERTD) and VFLB input. The vertical delay starting from the leading edge of VFLB
is calculated by using the following equation:
Vertical delay time = ( VERTD * 4 + 1 ) * H
Where H = one horizontal line display time
TABLE 2. Repeat Line Weight of Character
CH6 – CH0
Repeat Line Weight
CH6, CH5 = 11
+18*3
CH6, CH5 = 10
+18*2
CH6, CH5 = 0x
+18
CH4 = 1
+16
CH3 = 1
+8
CH2 = 1
+4
CH1 = 1
+2
CH0 = 1
+1
Rev 0.9
- 5 - 2001/03/15
5 Page 
MYSON
TECHNOLOGY
MTV048
(Rev 0.9)
3.11 Luminance & Border Generator
There are 3 shift registers included in the design which can shift out of luminance and border dots to color
encoder. The bordering and shadowing feature is configured in this block. For bordering effect, the character
will be enveloped with blackedge on four sides. For shadowing effect, the character is enveloped with
blackedge for right and bottom sides only.
3.12 Window and Frame Control
The display frame position is completely controlled by the contents of VERTD and HORD. The window size
and position control are specified in column 0 to 11 on row 15 of memory map, as shown in Figure 5.
Window 1 has the highest priority, and window 4 is the least, when two windows are overlapping. More
detailed information is described as follows:
1. Window control registers,
ROW 15
Column
0,3,6 or 9
b7 b6 b5
ROW START ADDR
MSB
b4
LSB
b3
MSB
b2 b1
ROW END ADDR
b0
LSB
Column
b7
1,4,7 or 10 MSB
b6 b5 b4
COLUMN START ADDR
b3
LSB
b2
WEN
b1 b0
- WSHD
Column
b7
2,5,8 or 11 MSB
b6 b5 b4
COLUMN END ADDR
b3
LSB
b2
R
b1
G
b0
B
START(END) ADDR - These addresses are used to specify the window size. It should be noted that when
the start address is greater than the end address, the window would be disabled.
WEN - Enable the relative background window display.
WSHD - Enable shadowing on the relative window.
R, G, B - Specify the color of the relative background window.
2. Frame control registers,
ROW 15
b7 b6 b5 b4 b3 b2 b1 b0
Column 12
VERTD
MSB
LSB
VERTD - Specify the starting position for vertical display. The total steps are 256, and the increment of each
step is 4 Horizontal display lines. The initial value is 4 after power up.
b7 b6 b5 b4 b3 b2 b1 b0
Column 13
HORD
MSB
LSB
HORD - Define the starting position for horizontal display. The total steps are 256, and the increment of each
step is 6 dots. The initial value is 15 after power up.
Rev 0.9
- 11 -
2001/03/15
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet MTV048.PDF ] | |
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