On Screen Display; Block Diagram - NEC MultiSync FE700 Serviceanleitung

11. On Screen Display

FEATURES
• Horizontal SYNC input up to 130 KHz.
• On-chip PLL circuitry up to 96 MHz.
• Programmable horizontal resolutions up to 1524 dots per display row.
• Full-screen display consists of 15 (rows) by 30 (columns) characters.
• 12 x 18 dot matrices per character.
• Total of 272 characters and graphic fonts, including 256 standard and 16 multi-color mask ROM fonts.
• 8 color-selectable maximum per display character.
• 7 color-selectable maximum for character background.
• Double character height and/or width control.
• Programmable positioning for display screen center.
• Bordering, shadowing and blinking effect.
• Programmable character height (18 to 71 lines) control.
• Row to row spacing register to manipulate the constant display height.
• 4 programmable background windows with multi-level operation and shadowing on window effect.
• Software clears bit for full-screen erasing.
• Half tone and fast blanking output.
• Fade-in/fade-out effect.
• 4-channel/8-bit PWM D/A converter output.
• Compatible with SPI bus or I 2 C interface with slave address 7AH (slave address is mask option).
• 20-pin PDIP package.
GENERAL DESCRIPTION
MTV021 is designed for monitor applications to display built-in characters or fonts onto monitor screens. The
display operation occurs by transferring data and control information from the micro-controller to RAM
through a serial data interface. It can execute full-screen display automatically, as well as specific functions
such as character background color, bordering, shadowing, blinking, double height and width, font by font
color control, 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 and shad-owing on window.
MTV021 provides 256 standard and 16 multi-color characters and graphic fonts for more efficacious
applications. The full OSD menu is formed by 15 rows x 30 columns, which can be positioned any-where on
the monitor screen by changing vertical or horizontal delay. Moreover, MTV021 also provides 8 PWM DAC
channels with 8-bit resolution and a PWM clock out-put for external digital-to-analog control.

BLOCK DIAGRAM

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