TPU 3035, TPU 3040
PRELIMINARY DATA SHEET
Multistandard Teletext Processor for Level 1 and 2
Note:
This data sheet describes functions and characteristics of TPU3040 TC25.
If not otherwise designated, the pin numbers mentioned refer to the 44-pin PLCC package. For corresponding
PDIP numbers see page 11. Revision bars indicate significant changes to the previous version.
1. Introduction
Table 1–1: Feature List
The TPU 3040 is a single chip World System Teletext
(WST) decoder for applications in analog and digital TV
sets. Based on a 65C02 core with RAM and ROM on
chip, an adaptive data slicer, a display controller and a
number of interfaces, the TPU 3040 offers acquisition
and display of various teletext and data services such as
WST, PDC, VPS and WSS.
TPU
3035
3040
Acquisition
No. of analog comp. video inputs
Clamping
1
x
x
x
x
x
x
–
–
–
2
x
x
x
x
x
x
–
x
–
AGC
1.1. Features
Sync. separation with PLL
Adaptive data slicer
Signal quality detection
PAL VBI acquisition
NTSC VBI acquisition
MAC VBI acquisition (PLCC44 only)
The TPU 3040 is an integrated circuit designed in
CMOStechnology. Asastand-alonesystemorincombi-
nation with the DIGIT 3000 system, the TPU 3040 offers
a wide range of new and interesting features, some of
them unique in comparison with other products on the
market.
The TPU 3035 is a stripped-down version of TPU 3040,
designed for low-cost applications. The basic chip archi-
tecture remains unchanged, whereas some of the more
sophisticatedfeaturesareremoved(seeTab1–1). Inthe
following description only the TPU 3040 is mentioned.
MAC packet text acquisition
(PLCC44 only)
Full-field acquisition
–
x
x
–
–
–
x
x
x
x
Asynchronous acquisition & display
Ghost row acquisition
EPG support
Internal row 26 processing
(Extended Character Sets)
FLOF/TOP s/w support on chip
PDC acquisition
x
x
x
–
–
x
x
x
x
x
x
x
VPS acquisition
WSS acquisition
US captioning
Software acquisition (advanced
header, magazine shuffle, ...)
Full parallel acquisition
x
x
4
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MICRONAS [ MICRONAS ]
