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STV9432TAP Datasheet

  • STV9432TAP

  • 100MHz OSD FOR MONITOR INCLUDING BEAM CURRENTS, VIDEO TIMING...

  • 25頁

  • STMICROELECTRONICS   STMICROELECTRONICS

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STV9432TAP
100MHz OSD FOR MONITOR INCLUDING
BEAM CURRENTS, VIDEO TIMING ANALYZER AND PWMs
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MULTIFUNCTION OSD FOR MONITOR
INCLUDES FACILITIES FOR CUT-OFF VOLT-
AGE 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
BUS MCU INTERFACE
FIVE 8 BITS PWM DAC OUTPUTS
ating at very high frequency, gives an accurrate
display without visible jitter for a wide line fre-
quency range from 15 to 140 kHz.
- Cut-off Monitoring Circuitry includes: 5 x 8 bits
PWM DACs, 3 x 8 bits ADCs and a programmable
ADC sampling trigger. It gives the possibility to
measure the three beam currents, during the hori-
zontal flyback, at a given line in the frame, pro-
vided 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 鈥漋ideo
Active鈥?inputs, a set of counters give the different
timing measurements necessary to analyze the
current Video timing characteristics in order to
make the automatic set-up of screen size and cen-
tering. The measurements are initialized on the
same programmable trigger line than in the above
cut-off monitoring circuitry.
.
SO28
(Plastic Micropackage)
ORDER CODE: STV9432TAP
2
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DESCRIPTION
Connected to a host MCU via its serial I
2
C Bus, the
STV9432TAP is a multifunction slave peripheral
device integrating the following blocks:
- On-screen Display. It includes a MASK PRO-
GRAMMABLE 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, oper-
Version 4.0
February 2000
This is preliminary information on a new product in development or undergoing evaluation. Details are subject to change without notice.
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