STV5342 Ver la hoja de datos (PDF) - STMicroelectronics
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componentes Descripción
Lista de partido
STV5342 Datasheet PDF : 20 Pages
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STV5342
PIN DESCRIPTION
Pin
1
2 to 5
22 to 40
6
Symbol
VDD
RESERVED
TTD
7
TTC
8
ODD/EVEN
9
F6
10
VCS
11
SAND
12
TCS/SCS
13,14,15
16
17
18
19
20
21
RGB
COR
BLAN
Y
SCL
SDA
VSS
Function
+5V
Description
Positive supply voltage
Not used
Teletext data input
Teletext clock input
Interlaced mode state output
Character display clock signal
Video composite
synchronization input signal
Sandcastle
Input / output composite
synchronization signal
Red, green, blue
Contrast reduction
Blanking signal output
Foreground output
Serial clock
Serial data input / output
0 Volt
An A.C. coupled teletext data input supplied by the
SAA5231 chip is latched to VSS between 4 and 8µs
after each TV line.
A 6.9375MHz clock signal, supplied by the SAA5231
chip, is internally A.C. coupled, clamped and
buffered.
High for even numbered and low for odd numbered
frames. The value is valid 2µs before the end of
lines 311 and 624.
The 6MHz clock signal, supplied by the SAA5231
chip is internally A.C. coupled, clamped and buffered.
Active high VCS input.
Three level output pulse to the SAA5231 device.
Phase lock, blanking signal, and color burst
components are contained in this signal.
Scan composite input signal (SCS) for the display
synchronization or Text composite sync. (TCS)
output signal to the SAA5231. Both signals are
active low.
Character and background colors active-high
open-drain outputs.
Open-drain active-low output supporting optimal
display of characters in ”mixed mode” operation.
Open-drain active high output for TV-image blanking
in normal and mixed-mode operation.
Open-drain active-high output with foreground
information. Can be used for printer command.
Microprocessor clock input via serial bus.
Open-drain microprocessor serial data input/output
via serial bus.
Ground
2/20
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