STV9432TA Datasheet, PDF (1/24 Pages) STMicroelectronics – 100MHz OSD FOR MONITOR INCLUDING BEAM CURRENTS & VIDEO TIMING ANALYZER

STV9432TA
100MHz OSD FOR MONITOR
INCLUDING BEAM CURRENTS & VIDEO TIMING ANALYZER
• 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
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 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-
ating 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 differ-
ent 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
SDIP24 (Plastic Package)
ORDER CODE: STV9432TA
PIN CONNECTIONS
FILTER
1
AGND
2
SDA
3
SCL
4
HS
5
VS
6
HFLY
7
AV
8
DVDD
9
DV_{S S}
10
XTI
11
XTO
12
24
TEST
23
ADCREF
22
RCI
21
GCI
20
BCI
19
AVDD
18
OVDD
17
FBLK
16
BOUT
15
GOUT
14
ROUT
13
OV_{S S}
Rev. 4.0
February 2000
1/24
This is preliminary information on a new product in development or undergoing evaluation. Details are subject to change without notice.
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