LM1253A - National Semiconductor

LM1253A Monolithic Triple 180 MHz I2C CRT Pre-amp

The LM1253A pre-amp is an integrated high voltage triple CRT pre-amp and Analog On Screen Display (OSD) generator. The IC is I2C controlled, and allows control of all the parameters necessary to setup and adjust the brightness and contrast in the CRT display. In addition, it provides a programmable period vertical blanking pulse which is used to blank the G1.

Features

n 190 two-color ROM based Character Fonts n 64 four-color ROM based Character Fonts n Supports a programmable page size with up to 512 characters and line definition codes n Support for 2 Display Windows (size of each window is configurable) n Programmable start position for each Display Window n Programmable Resolutions: from 512 to 960 pixels per line in 64 pixel increments n Programmable Character Height, with automatic height control with mode change n Programmable Row Spacing between each display character row n Maximum Pixel clock of 92.2 MHz n I2C compatible interface to controlling mic.