DESCRIPTION

Connected to a host MCU via a serial I2C Bus, the STV9432TA is a multifunction slave peripheral device integrating the following blocks:

- On-screen Display. It includes a MASK PROGRAMMABLE ROM that holds the CUSTOM CHARACTER FONT, a 1Kbytes RAM that stores the code strings of the different lines of text to be displayed, and a set of registers to program char acter sizes and colors. A built-in digital PLL, operating at very high frequency, provides an accurate display without visible jitter for a wide line fre quency range from 15 to 140 kHz.

- Cut-off Monitoring Circuitry includes 3 x 8 bits ADCs and a programmable ADC sampling trigger. It gives the possibility to measure the three beam currents, during the horizontal flyback, at a given line in the frame, provided that the three ADC

inputs are connected to a beam current sensing circuitry. The values are stored in three BEAM CURRENT REGISTERS, and available for MCU read.

- Video Timing Analyzer. Using the Horizontal Sync, Vertical Sync, Horizontal Flyback, and Video Active inputs, a set of counters provide the different timing measurements necessary to analyze the current Video timing characteristics to make the automatic set-up of screen size and centering. The measurements are initialized on the same programmable trigger line than in the above cut-off monitoring circuitry

• MULTIFUNCTION OSD FOR MONITOR

• INCLUDES FACILITIES FOR CUT-OFF VOLT AGES MONITORING:

- THREE 8 BITS ADC INPUTS

- ADC TRIGGER DURING RETRACE TIME OF A PROGRAMMED LINE

• INCLUDES FACILITIES FOR SCREEN SIZE & CENTERING AUTO SETUP

- HS, VS, VIDEO TIMING MEASUREMENTS

• 100MHz MAX. PIXEL CLOCK, AVAILABLE FOR ANY LINE FREQUENCY BETWEEN 15 AND 140 kHz

• 12 x 18 CHARACTER ROM FONT INCLUDES:

- 240 MONOCOLOR CHARACTERS

- 16 MULTICOLOR CHARACTERS

• CHARACTER FLASHING

• UP TO 1K CHARACTERS TEXT DISPLAY

• ULTRA HIGH FREQUENCY PLL FOR JITTER FREE DISPLAY

• FLEXIBLE DISPLAY:

- ANY CHARACTER WIDTH AND HEIGHT

- ANYWHERE IN THE SCREEN

• SINGLE BYTE CHARACTER CODES AND COLOR LOOK-UP TABLE FOR EASY PRO GRAMMING AND FAST ACCESS

• CHARACTER FLIP OPERATIONS

• WIDE DISPLAY WINDOW ALLOWS PATTERN GENERATION FOR FACTORY ADJUSTMENTS

• I2C BUS MCU INTERFACE