saa5244a NXP Semiconductors, saa5244a Datasheet - Page 2

• Manufacturer Part Number: saa5244a
• Description: Integrated Teletext Decoder Ivt1.1
• Manufacturer: NXP Semiconductors

Philips Semiconductors
FEATURES
ORDERING INFORMATION
Notes
1. SOT129-1; 1996 December 16.
2. SOT205-1; 1996 December 16.
March 1992
Complete teletext decoder including page memory in a
single 40-pin DIL package
Single +5 V power supply
Digital data slicer and display clock phase-locked loop
reduces peripheral components to a minimum
Both video and scan related synchronization modes are
supported
On board single page memory including extension
packets for FASTEXT
Single page acquisition system
RGB interface to standard colour decoder ICs, push-pull
output drive
Data capture performance similar to SAA5231 (VIP2)
Simple software control via I
Option for five national languages
32 supplementary characters for on-screen displays
Optional storage of packet 24 in the display memory
Page links in packets 27 and 8/30 are Hamming
decoded
Separate text and video signal quality detectors,
625/525 video status and language version all readable
via I
Automatic ODD/EVEN output control with manual
override
Control of display PLL free-run and rolling header via
I
VCS to SCS mode for stable 525 line status display
Integrated VIP and teletext decoder
(IVT1.1)
2
C-bus
EXTENDED TYPE
2
SAA5244AGP
SAA5244AP
C-bus
NUMBER
2
C-bus
PINS
40
44
PIN POSITION
QFP
DIL
2
DESCRIPTION
The Integrated VIP and Teletext (IVT1.1) is a teletext
decoder (contained within a single-chip package) for
decoding 625-line based World System Teletext
transmissions. The teletext decoder hardware is based on
a reduced function version of the device SAA5246
(IVT1.0).
The Video Input Processor (VIP) section of the device
uses mixed analog and digital designs for the data slicer
and the display clock phase-locked loop functions. As a
result the number of external components is greatly
reduced and no critical or adjustable components are
required. A single page static RAM is incorporated in the
device thereby giving a genuine single-chip teletext
decoder device.
PACKAGE
MATERIAL
plastic
plastic
Product specification
SOT205A
SAA5244A
SOT129
CODE
(1)
(2)