SDA5273-3CS ,CompacttextICs for Consumer ElectronicsCOMPACTTEXTSDA 5273-3CDelta Specification / Application Notes 1999-01-2 ..
SDA5273P , ICs for Consumer Electronics MEGATEXT and MEGATEXT PLUS ICs
SDA5273P , ICs for Consumer Electronics MEGATEXT and MEGATEXT PLUS ICs
SDA5273S , ICs for Consumer Electronics MEGATEXT and MEGATEXT PLUS ICs
SDA5273S , ICs for Consumer Electronics MEGATEXT and MEGATEXT PLUS ICs
SDA5273S , ICs for Consumer Electronics MEGATEXT and MEGATEXT PLUS ICs
SH3100 , Supervisory IC with I2C Interface and PWM
SH50S-0.9-330 , Inductors for National 50kHz Simple SwitcherTM
SH69P20 , SH69P20
SH69P20 , SH69P20
SH69P20 , SH69P20
SH69P20 , SH69P20
SDA5273-3CS
Compacttext
ICs for Consumer Electronics
COMPACTTEXT
SDA 5273-3C
Delta Specification / Application Notes1999-01-27
SDA 5273-3C
Table of ContentsPageDelta Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71.1General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
1.1.1Page Request Priority Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
1.1.2Memory Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
1.1.3Additional Features in COMPACTTEXT compared to MEGATEXT® . . . . . .10
1.2Differences to the MEGATEXT® Volume1 Documentation . . . . . . . . . . .10
1.2.1General Differences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
1.2.2Firmware Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
1.2.3ACQ Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
1.2.4Command Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
1.2.5M3L-Bus Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
1.3Command Directory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
1.3.1How to Use an MCI Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
1.3.2Command Handshake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
1.3.3Error Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
1.3.4MCI Command Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
1.3.5Command Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
1.3.5.1Call Subroutine (No. 34) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
1.3.5.2Clock (No. 12) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
1.3.5.3Cursor Down (No. 19) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
1.3.5.4Cursor Up (No. 18) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
1.3.5.5Cyan (No. 17) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
1.3.5.6Digit 0 (No. 23) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
1.3.5.7Digit 1 (No. 24) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
1.3.5.8Digit 2 (No. 25) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
1.3.5.9Digit 3 (No. 26) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
1.3.5.10Digit 4 (No. 27) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
1.3.5.11Digit 5 (No. 28) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
1.3.5.12Digit 6 (No. 29) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
1.3.5.13Digit 7 (No. 30) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
1.3.5.14Digit 8 (No. 31) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
1.3.5.15Digit 9 (No. 32) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
1.3.5.16Green (No. 15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
1.3.5.17Hold (No. 10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
1.3.5.18Index Page (No. 07) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
1.3.5.19Inhibit Update S/P-C (No. 35) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
1.3.5.20Last Seen Page (No. 38) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
1.3.5.21List Mode (No. 06) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
1.3.5.22List Page (No. 13) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
1.3.5.23Mix Mode (No. 04) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
1.3.5.24Move Memory Seg (No. 33) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
SDA 5273-3C
Table of ContentsPage1.3.5.26Page Catching Off (No. 36) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
1.3.5.27Picture Mode (No. 02) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
1.3.5.28Previous Page (No. 05) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
1.3.5.29Red (No. 14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
1.3.5.30Reset Acq (No. 00) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
1.3.5.31Reset Intq (No. 20) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
1.3.5.32Reveal (No. 11) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
1.3.5.33Search Page (No. 37) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
1.3.5.34Size (No. 09) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
1.3.5.35Size Off (No. 21) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
1.3.5.36Start New Request (No. 39) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
1.3.5.37Store OK (No. 22) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
1.3.5.38Subpage Mode (No. 08) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
1.3.5.39Text Mode (No. 03) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
1.3.5.40Yellow (No. 16) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
1.4Setup Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
1.5User Defined Characters (UDC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
1.6Return Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
1.7Description of the Stored Data Formats . . . . . . . . . . . . . . . . . . . . . . . . . .45
1.7.1Stored Format of 1-Byte Hamming Protected Data . . . . . . . . . . . . . . . . . .45
1.7.2Stored Format of Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
1.7.3Stored Format of Packet 8/30 (000x) Format 1 . . . . . . . . . . . . . . . . . . . . .46
1.7.4Stored Format of Packet 8/30 (001x) Format 2 (PDC) . . . . . . . . . . . . . . .47
1.7.5Format of TOP Title . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
1.7.6Format of Stored BTT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
1.8Wide Screen Signaling (WSS), Video Program System (VPS) . . . . . . . . .49
1.8.1Wide Screen Signaling (WSS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
1.8.2Video Program System (VPS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
1.9Teletext Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
1.9.1Teletext Identification in Line16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
1.10Signal Quality Status Bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
1.11Firmware Refresh for the External DRAM . . . . . . . . . . . . . . . . . . . . . . . . .53
1.12Binary Address Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
Application Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .552.1Version Code Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
2.2Example for COMPACTTEXT Initialization . . . . . . . . . . . . . . . . . . . . . . . .56
2.3How to Initialize COMPACTTEXT for Russian Market . . . . . . . . . . . . . . .61
2.4How to Initialize COMPACTTEXT for Thai Language . . . . . . . . . . . . . . . .63
2.5Pages to be Requested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
2.6Digit Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
SDA 5273-3C
Table of ContentsPageReferences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
SDA 5273-3C
Delta SpecificationDelta Specification
1.1General Information The SDA
5273-3C is a powerful one-chip videotext decoder with all the display featuresof his “big brother” SDA 5273 but with a very simple command interface for reduced
external software.
The whole documentation of the
MEGATEXT®
SDA5273 is also valid for
COMPACTTEXT SDA5273-3C except for the differences which are described in
chapter1.2 “Differences to the MEGATEXT® Volume1 Documentation” on
page10.After power-on of the system, the setup parameters for CTX must be initialized by the
external controller. These setup parameters are read every time when necessary by the
SDA5273-3C. The complete page management is done on chip. TOP and FLOF
detection is done automatically, as well as the acquisition of packet 8/30/1, 8/30/2 or
VPS and WSS data. The initial teletext page is taken from packet 8/30 (if present) or from
the setup parameter or from the 5th FLOF link (if present).
The user has several choices to enter a page request. One way is entering a page
number for a new display page with the “DIGIT” commands. It is also possible to enter a
page request by a “page catching” or with the colour keys RED, GREEN, YELLOW, and
CYAN. These keys have different meanings depending on the current request mode
(simple, TOP, FLOF). In all cases only the new display page has to be entered and all
following page requests are automatically done by the firmware depending on the
current mode.
Some additional status information is also available (i.e. TOP, FLOF, page found…) for
generating individual messages like “page xxx not broadcasted” by the external
controller (return parameter).
For page acquisition a maximum of 10 pages (+2 chapters for x/26) is available. After
reset, the SDA
5273-3C is in the “simple mode”, that means the initial page (page 100)and the following 9 pages are requested. The processor will start with the picture mode.
SDA5273-3C automatically changes to the page trace mode as soon as the page traceis stable.
The user has the possibility to block up to 4 of the 10 available pages (with the list page
command) for so-called favourite or list pages. These pages are favourite page numbers
of the user, programmed for each program individually, and stored for example in the
NVM of the TV. These pages can not be removed by the automatic TOP or FLOF
requests. In the list mode, a special menu in row 24 can be generated for easy page
selection by use of the remote control‘s colour keys.
In TOP mode, the BTT and a given number of AITs are immediately requested. Then the
memory is filled with the next block page, group page and so on (see below). A standard
SDA 5273-3C
Delta SpecificationTOP title is also written to row 24 of the display memory. TOP mode is only switched on
automatically if more than 10 pages are marked in the BTT.
In FLOF mode, the four link pages and the index page of the display chapter given by
x/27/0000 are requested.
No page request will be made twice.
For storing packets x/26, two chapters are reserved. With the help of these two chapters,
it is possible to make visible all characters with diacritical marks and from G2 and G3
characterset.
Packets x/27/0000 are compressed and stored in Row 25 of each Chapter.
The reception of Packets 8/30/0/1 and 8/30/2/3 is always enabled.
1.1.1Page Request Priority TablePages are requested in the order of their priority until the memory space is exhausted.
The priority of all pages is fixed in table 1.
Table 1
SDA 5273-3C
Delta Specification
1.1.2Memory ConfigurationThe following table shows the internal memory allocation of the SDA
5273-3C.In all memory configurations, up to 10 pages are available for page acquisition. If block1
is used for graphics or block3 for outer screen display, byte4 and byte3 of block2 can
be used for page acquisition.
Related register: Memory Allocation Register IAT(2:0), refer to chapter
1.2.5
Table 2
SDA 5273-3C
Delta Specification
1.1.3Additional Features in COMPACTTEXT compared to MEGATEXT® Multiple window function for OSD in TV/TXT-modeTwist modeNon-latin based language support (cyrillic, arabic, greek, hebrew)Simple command interface to the external controllerList mode (user pages)More internal page memory (up to 10 pages)Page catchingAutomatic detection and processing of text in Line 16Automatic detection and storing of VPS in line 16Reception and decoding of Wide Screen Signaling (WSS) in Line 23Reception and decoding of Video Program Service (VPS) in line 16Reception and decoding of Program Delivery Control (PDC) data via packet 8/30TOP and FLOF support
1.2Differences to the MEGATEXT®
Volume1 Documentation
1.2.1General DifferencesThe firmware initializes the display mask register OSMR, ISMR0, ISMR1,BOXMR0 and
BOXMR1 to 000000000000H. Therefore, the display generator uses all 6 attribute
bytes of the character display words in block2 and 3.
To prevent the interpretation of byte position 5attributes of a character display word, the
user software has to initialize the above mentioned display mask registers to0000000000H and the related control registers OSDW, ISDW0, ISDW1, BOXDW0
and BOXDW1 must be 00xxxxxxxxxxH (xx means customer-specific values that
depend on the application).
An example for
COMPACTTEXT initialization is given in this document. Refer to
chapter2.2 “Example for COMPACTTEXT Initialization” on page56.
1.2.2Firmware OverviewThis respective part of the MTX document is completely replaced by this document, the
COMPACTTEXT Delta Specification.
1.2.3ACQ ReferenceThis respective part of the MTX document is completely replaced by this document, the
COMPACTTEXT Delta Specification and Application Notes for COMPACTTEXT.
1.2.4Command InterfaceThis respective part of the MTX document is completely replaced by the
COMPACTTEXT command interface description which is part of COMPACTTEXT Delta
SDA 5273-3C
Delta Specification
1.2.5M3L-Bus RegisterThe registers R2-R5 have to be initialized as follows:
The following registers are not defined in COMPACTTEXT:
FREE CHAP CHAIN control register: R40, R41, R42, R43, R44, R45
FREE P80 CHAIN control register: R64, R65, R66, R67, R68, R69
FREE P40 CHAIN control register: R72, R73, R74, R75, R76, R77
MEMORY ALLOCATION register: R91, R92, R93
ACQUISITION control register: R105, R106
TOP COM BAS register: R120, R121, R122
PAGE TRACE register: R123, R124, R125
R2 / PB_LENGTH
R3 / PB_ADR_2
R4 / PB_ADR_1
R5 / PB_ADR_0
SDA 5273-3C
Delta SpecificationThe following register group (Memory Allocation Register IAT_2-IAT0) has a different
meaning in COMPACTTEXT than in MEGATEXT
®. Be careful not to copy the respective
MTX code.
Each bit of the memory allocation register IAT(2:0) enables 1Kbyte of the internal
memory for page acquisition. Chapter is enabled for page acquisitionChapter is disabled for page acquisition
R88 / IAT_2
R89 / IAT_1
R90 / IAT_0
SDA 5273-3C
Delta Specification
1.3Command DirectoryThis chapter contains a list of commands from the COMPACTTEXT command interface
MCI in alphabetical order. The documentation for each command contains a statement
about the command’s purpose, a description of its input parameters with used parameter
registers, and a description of its return values with used parameter registers. The
documentation contains additional important comments for some functions that a
designer needs in order to properly use the command.
1.3.1How to Use an MCI CommandSet all MCI input parameters as described.
Set the CMD RUN bit in MCI input parameter register “MCI3_1” bit position MCI3_1_0
to activate MCI handshake.
Transmit the MCI command to subaddress MCI COMMAND (see
MEGATEXT®documentation volume1, chapter “M3L-Bus Registers Programmers Reference”).
As long as the MCI command is in execution, the CMD RUN bit will be in the 1 condition.
Use a polling technique to detect whether the CMD RUN bit has changed into the 0
condition.
If the CMD RUN bit is in the 0 condition, the MCI is ready to receive a new command.
Always evaluate the return parameters, especially the error code.
1.3.2Command HandshakeAn MCI command can be given only if the previous command is finished. The CMD RUN
bit shows the command status. As long as it is in the 1 condition, a command is in
execution. The external controller must check this bit before giving a new command. The
user is responsible for setting the CMD RUN bit before giving the MCI command. The
CMD RUN bit is reset to 0 by the internal firmware after the command is executed.
CMD_RUN:MCI command running flagMCI command is in execution.MCI command is finished.
MCI3_1 / COMMAND STATUS
SDA 5273-3C
Delta Specification
1.3.3Error CodeSome commands return an error code to acknowledge the command result. It looks as
follows:
ERR(7:0)Error-code bits are explained in the command description. Unless
stated otherwise, MCI3_2 is used for the error-code register.
1.3.4MCI Command TableThe following table shows the command name/command number assignment:
MCI3_2 / ERROR CODE
Table 3
SDA 5273-3C
Delta Specification
Table 3 (cont’d)
SDA 5273-3C
Delta Specification
1.3.5Command Description
1.3.5.1Call Subroutine (No. 34)Calls the subroutine given by its call address. This command is only relevant for
customers using downloadable RAM-modules.
Input Parameters:Subroutine call address. The subroutine call address is the bi-
nary IRAM address given in the setup parameters.
Return Values:Depends on the called subroutine.
Error Code
Comment:The subroutine call address bits must be written over
M3L-Bus data port 0 or 1.
1.3.5.2Clock (No. 12)In picture mode, this command shows the current time on the TV screen from the lastcharacters of each TTX page header. If the command is given again or if text mode is
chosen, the clock display is switched off.
Input parameters:None.
Return values:None.
Comments:For position and attributes of the clock, refer to the setup pa-
rameters.
1.3.5.3Cursor Down (No. 19) In text or mix mode (TOP, FLOF, simple or list) the PAGE CATCHING feature is
activated. This command searches the next page number beginning from row1 /
column0 of the display page downward (three digits from 0…9 immediately following
each other with a leading blank) and highlights it. If any page number is already
highlighted search is started from that position. After reaching row23 / column37 of the
display chapter, search is started again at the top of the page.
Input parameters:None.
Return values:None.
Comments:The page catching function is quit by any other page selection
Table 4
SDA 5273-3C
Delta Specification
1.3.5.4Cursor Up (No. 18) In text or mix mode (TOP, FLOF, simple or list) the
PAGE CATCHING feature is
activated. This command searches beginning from row23 / column37 of the display
page the next page number upward (three digits from 0…9 immediately following each
other with a leading blank) and highlights it. If any page number is already highlighted
search is started from that position. After reaching row1 / column0 of the display
chapter search is started again in row23 / column37.
Input parameters:None.
Return values:None.
Comments:The page catching function is quit by any other page selection
method.
1.3.5.5Cyan (No. 17) Depending on the current mode, the display chapter is changed to the page number
indicated by the cyan button.In TOP mode, this is the next available block page marked in the BTT. In FLOF mode, it is the fourth link of packet x/27 of the current display page. In list mode, it is the list#4 page. In simple mode, it is the next available page in the next hundred group. In subpage mode, this button is not defined.
After changing the display chapter, the new page requests are automatically done.
Input parameters:None.
Return values:None.
Comments:Setting any other page selecting method quits this one. If a
new page request is done, the current page number will be
written in row 0 of the display chapter.
SDA 5273-3C
Delta Specification
1.3.5.6Digit 0 (No. 23) The digit 0 is added to the page number and written to the actual column position of row
0 of the display memory. This command is used for numeric selection of a page. 3 digits
(4 in subpage mode) must be given one after another to select a new page. After entering
the third digit for the page number (the fourth in subpage mode) the display chapter will
change and the page request of the complete page number will be executed. Depending
on the current mode (TOP, FLOF, simple or list), all other page requests are
automatically done in the background.
Input parameters:None.
Return values: None.
Comments: Setting any other page selecting method quits this one. In-
complete page numbers in the first 8 columns of the header
are replaced by “-”. The first digit of the page number must be
> 0 and ≤ 8. For format of the first 8 characters in row 0 of the
display memory refer to the user defined characters UDC.
1.3.5.7Digit 1 (No. 24) This command has the same meaning as “DIGIT 0” except that the digit 1 is added to
the page number.
1.3.5.8Digit 2 (No. 25)This command has the same meaning as “DIGIT 0” except that the digit 2 is added to
the page number.
1.3.5.9Digit 3 (No. 26)This command has the same meaning as “DIGIT 0” except that the digit 3 is added to
the page number.
1.3.5.10Digit 4 (No. 27)This command has the same meaning as “DIGIT 0” except that the digit 4 is added to
the page number.
1.3.5.11Digit 5 (No. 28)This command has the same meaning as “DIGIT 0” except that the digit 5 is added to
the page number.
1.3.5.12Digit 6 (No. 29) This command has the same meaning as “DIGIT 0” except that the digit 6 is added to
SDA 5273-3C
Delta Specification
1.3.5.13Digit 7 (No. 30)This command has the same meaning as “DIGIT 0” except that the digit 7 is added to
the page number.
1.3.5.14Digit 8 (No. 31)This command has the same meaning as “DIGIT 0” except that the digit 8 is added to
the page number.
1.3.5.15Digit 9 (No. 32) This command has the same meaning as “DIGIT 0” except that the digit 9 is added to
the page number.
1.3.5.16Green (No. 15) Depending on the current mode, the display chapter is changed to the page number
indicated by the green button.In TOP mode, this is the next available page marked in the BTT.In FLOF mode, it is the second link of packet x/27 of the current display page.In list mode, it is the list#2 page.In simple mode, it is the next available page in binary order.IN subpage mode, it is the subpage with next higher subpage number.
After changing the display chapter, the new page requests are automatically done.
Input parameters:None.
Return values:None.
Comments:Setting any other page selecting method quits this one. If a
new page request is done, the current page number will be
written in row 0 of the display chapter.
1.3.5.17Hold (No. 10) This command stops the acquisition of the current display chapter. If the hold command
is given again, the current page appears (corresponding return parameters STOP_DIS).
Input parameters:None.
Return values:None.
Comments:None.
SDA 5273-3C
Delta Specification
1.3.5.18Index Page (No. 07) This command switches the display page in FLOF mode to the 5th link (index page).if there is no FLOF mode to the initial page of packet 8/30.if there is no packet 8/30 to the initial page given in the setup parameters (IP_M,
IP_PT, IP_PU).
Input parameters:None.
Return values:None.
Comments:None.
1.3.5.19Inhibit Update S/P-C (No. 35)This command defines display memory parts which are forbidden to be overwritten by
the S/P-C. Any number of inhibit update windows can be defined. In between these
windows bytes 0 - 4 of the CDW are always blocked for the S/P-C. The window can be
closed again by using the bits ALL and UPDATE. See table 5 below for an explanation
of all combinations ALL/UPDATE.
Input Parameters
UPDATE:This bit forces the S/P-C to update the specified window again
with teletext data.The specified inhibit update window is cancelled.The specified window is not updated anymore by the
S/P-C.
ALL:1:The total memory of block 2 is influenced by this command.Only the window defined by the COORDINATE registers is
influenced by this command
MCI0_0 / MODE_1
Table 5
SDA 5273-3C
Delta SpecificationThe COORDINATE registers define the start and end, row and column addresses of the
inhibit update windows. The end address must always be higher than the start address.
Return Values:None.
Comments:Activate and disactivate of the defined inhibit update windows
can be done with the bit ENA_INHIBIT_UPDATE in the setup
parameter.
MCI0_4 / COORDINATE_ROW_START
MCI0_3 / COORDINATE_COLUMN_START
MCI0_2 / COORDINATE_ROW_END
MCI0_1 / COORDINATE_COLUMN_END
Table 6
Error Code
SDA 5273-3C
Delta Specification
1.3.5.20Last Seen Page (No. 38) This command changes the display page one displayed before the current one.
Input parameters:None.
Return values:None.
Comments:None.
1.3.5.21List Mode (No. 06) This command switches on the list mode and offers a single line menu similar to the
FLOF menu. This line contains the stored list page numbers which can be selected by
the appropriate colour buttons. If there are less than 4 list pages stored, a “” will
appear in some buttons. If the list page is a subpage (subcode unequal 0000h or 3F7Fh)
the subpage number will also appear. If this command is executed again,
COMPACTTEXT will return to the last chosen text mode (TOP, FLOF or simple).
Input parameters:None.
Return values:None.
Comments:If the list mode is switched on, SDA
5273-3C will generate astatus line in the display memory. Each field of this line will get
a different background colour (red, green, yellow, cyan) and
black as a foreground colour. If the field contains a subpage
number, the page number and the subpage number will be
separated by a slash (“/”). The complete page number is pre-
ceded by 2 leading blanks. If the list page is only a basic page
in subpage don’t care mode, this page number is surrounded
by 4 leading and 3 filling blanks.
Table 7
SDA 5273-3C
Delta Specification
1.3.5.22List Page (No. 13) This command adds/removes a list page (a favourite page) to/from the page memory.
If the list page to be added is already requested, only the status of the page is changed.
List pages can only be removed by the list command or after reset. If the memory is full,
the page with the lowest priority is automatically removed.
Input parameters All above listed request bits have the same meaning as defined in the WST.
SDC:Subpage don’t care mode:The list page is a running-through subpage.The list page is a subpage.
ADD/REM:Add or remove a list page: The list page is added to the page memory.The list page of the given list colour is removed from the
page memory.
LC_1...0:List colour:The list page is assigned to the red colour button.he list page is assigned to the green colour button.The list page is assigned to the yellow colour button.The list page is assigned to the cyan colour button.
MCI1_5 / PRQ_RECORD_4
MCI1_4 / PRQ_RECORD_3
MCI1_3 / PRQ_RECORD_2
MCI1_2 / PRQ_RECORD_1
MCI1_1 / RESERVED
MCI1_0 / LIST_MODE
SDA 5273-3C
Delta Specification
Return values:None.
Comments:The command list mode offers a menu line that shows the
stored list pages.
1.3.5.23Mix Mode (No. 04) This command toggles between background colour and transparent background colour
(text mode - mix mode) or between foreground colour and transparent foreground colour
(picture mode - mix mode).
Input parameters:None.
Return values:None.
Comments:None.
Table 8
Error Code
SDA 5273-3C
Delta Specification
1.3.5.24Move Memory Seg (No. 33)This command moves any internal source memory byte segment to an internal
destination memory byte segment. Substitution capabilities are supported.
Input Parameters are Source Segment Start Address, Source Segment End Address,
Destination Segment Start Address and the Substitution Parameters.
Source Segment Start Address
BYT_5 – BYT_0:Byte position of the internal memory doubleword.
Only one BYT bit must be selected.
BLK_2 – BLK_0:Block of internal memory.≤ block address ≤3.
ROW_4 – ROW_0:Internal memory row address. ≤ row address ≤25.
COL_5 – COL_0:Internal memory column address.
For row address = 0-24 → 0≤ column address ≤39.
For row address = 25 → 0≤ column address ≤23.
MCI0_5 / MOVE_SOURCE_SEG_START_2
MCI0_4 / MOVE_SOURCE_SEG_START_1
MCI0_3 / MOVE_SOURCE_SEG_START_0
SDA 5273-3C
Delta Specification
Source Segment End Address
ROW_4 – ROW_0:Row address for the end of memory source segment ≤ row address ≤25.
COL_5 – COL_0:Column address for the end of memory source segment
For row address = 0-24 → 0≤ column address≤39.
For row address = 25 → 0≤column address≤23.
Destination Segment Start Address
BYT_5 – BYT_0:Byte position of the internal memory doubleword.
Only one BYT bit must be selected.
BLK_2 – BLK_0:Block of internal memory.≤block address≤3.
ROW_4 – ROW_0:Internal memory row address. ≤ row address≤25.
COL_5 – COL_0:Internal memory column address.
For row address = 0-24 → 0≤column address≤39.
For row address = 25 → 0≤column address≤23.
MCI0_2 / MOVE_SOURCE_SEG_END_2
MCI0_1 / MOVE_SOURCE_SEG_END_1
MCI0_0 / MOVE_SOURCE_SEG_END_0
MCI1_5 / MOVE_DESTINATION_SEG_START_2
MCI1_4 / MOVE_DESTINATION_SEG_START_1
MCI1_3 / MOVE_DESTINATION_SEG_START_0
SDA 5273-3C
Delta Specification
Substitution Parameters
SUBSDIS(7:0):Substitution pattern disables/enables the associated substitu-
tion pattern bit for substitution. So a selection of bits to be sub-
stituted by the given substitution pattern is possible.Substitution is enabled.Substitution is disabled.
SUBS(7:0):Substitution value. Only bits which are enabled by the associ-
ated substitution pattern disable bit will be substituted.
SUB_EN:Substitution enableAll bytes of the selected memory segment are substituted
with the reference value of the substitute pattern.Substitution is disabled.
MOV_ DIS:Move disable
1: Moving any byte of the selected byte segment is disabled.Each byte is moved to the destination address.
BINARY:1: The binary address scheme is assumed. Row 4 - row 0 and
col 5 - col 1 of move source reg start and end are interpret-
ed as binary address bits. Col 0 has don’t care value.
0: The row/col address scheme is assumed.
WINDOWS:1:The address given in move source seg start is interpreted
as the top left corner of a window and the address in move
source seg end the bottom right corner. The column and
row address in move source seg end must be bigger than
move source seg start.
0: Continuous row/col address scheme is assumed.
Return Values:Address of actual destination: mov destination seg start.
MCI1_1 / SUBSTITUTION_PATTERN_DISABLE
MCI1_0 / SUBSTITUTION_PATTERN
MCI3_3 / MOVE_CONTROL
SDA 5273-3C
Delta Specification
CommentsA byte segment can be 1 to 1024 bytes and must be inside a chapter.Source segment size must fit into the destination chapter.Following segments can be selected:
Selection of 1 byte segment by theBYT_5 to BYT_0 bits is possible. The segment
length is determined by the move source seg start and move source seg end
parameters. The destination byte segment can be at any byte position of a
doubleword.Minimum source segment start address of a chapter is row/column = 0/0.
Maximum source segment start address of a chapter is row/column = 25/23.
Minimum source segment end address of a chapter is row/column = 0/0.
Maximum source segment end address of a chapter is row/column = 25/23.
Minimum destination segment start address of a chapter is row/column = 0/0.
Maximum destination segment start address of a chapter is row/column = 25/23.
1.3.5.25Next Page (No. 01) This command changes the display page to the next page:Binary mode:Next page = display page +1Page trace mode:Next page = next available page in the page trace in
ascending order.
Input parameters:None.
Return values:None.
Comments:None.
1.3.5.26Page Catching Off (No. 36) Switches off the page catching feature.
Input parameters:None.
Return values:None.
Comments:None.
1.3.5.27Picture Mode (No. 02)Switches from any text mode to TV mode. The switch is done by stopping the S/P-C and
setting the foreground and background transparent bits in the character display word to1
(transparent). All acquisition tasks are continued in the background.
Input parameters:None.
Return values:None.
Comments:None.
SDA 5273-3C
Delta Specification
1.3.5.28Previous Page (No. 05) This command changes the display page to the previous page:Binary mode: Previous page = display page -1Page trace mode:Previous page = next available page in the page trace in
descending order
Input parameters:None.
Return values:None.
Comments:None.
1.3.5.29Red (No. 14) Depending on the current mode, the display chapter is changed to the page number
indicated by the red button. In TOP mode, this is the previous available page marked in the BTT.In FLOF mode, this is the first link of packet x/27 of the current display page.In list mode, this is the list#1 page.In simple mode, this is the previous available page in binary order.In subpage mode, this is the subpage with next lower subpage number.
After changing the display chapter, the new page requests are automatically done.
Input parameters:None.
Return values:None.
Comments:Setting any other page selecting method quits this one. If a
new page request is done, the current page number will be
written in row 0 of the display chapter.
1.3.5.30Reset Acq (No. 00)This command initializes COMPACTTEXT for teletext reception and should be given
after power up and each channel change. Before invoking this command, all setup
parameters must be defined.
Input parameters:Setup parameters.
Return values:None.
Comments:None.
SDA 5273-3C
Delta Specification
1.3.5.31Reset Intq (No. 20) This command resets the pin INTQ, reads out the interrupt request source bits and
resets the interrupt request source bits.
Input parameters:None.
Return values
Comments:For a description of the bits please refer to the chapter
1.6.
1.3.5.32Reveal (No. 11) All hidden characters are revealed. Giving this command again, hides these characters
again.
Input parameters:None.
Return values:None.
Comments:None.
1.3.5.33Search Page (No. 37) This command returns the chapter address of the given page number.
Input parameters
Return values
MCI3_5 / IRQS
MCI1_5 / Magazine number
MCI1_4 / Page number
MCI1_2 / Destination_Address_2
MCI1_1 / Destination_Address_1
SDA 5273-3C
Delta Specification
Comments:None.
1.3.5.34Size (No. 09) This command toggles between the three possible display sizes in the following order:Normal size: Row 0 - 24 are shown in normal height.Double size upper half: Row 0 - 11 are shown in double height, row 24 in normal
height.Double size lower half: Row 12 - 23 are shown in double height, row 24 in normal
height.
Input parameters:None.
Return values:None.
Comments:None.
1.3.5.35Size Off (No. 21) Switches directly back to normal height if COMPACTTEXT has been in double height
mode by giving the command size.
Input parameters:None.
Return values:None.
Comments:None.
MCI1_0 / Destination_Address_0
Table 9
Error Code
SDA 5273-3C
Delta Specification
1.3.5.36Start New Request (No. 39) This command generates a new page request starting from the given display page and
changes the current display page.
Input parameters
Return values:None.
Comments:None.
1.3.5.37Store OK (No. 22) If page catching mode is activated by the commands cursor up/down, COMPACTTEXT
will change to the highlighted page number. All new page requests are automatically
done depending on the current text mode (TOP, FLOF, list, simple).
Input parameters:None.
Return values:None.
Comments:None.
1.3.5.38Subpage Mode (No. 08) If this command is given, the subpage mode is activated. That means that any subpage
of the current basic display chapter can be requested. In that mode 4 digits must be given
to specify a subpage. The subpage mode is terminated if this command is given again,
or if any other page select method (i.e. page catching) is used. With the colour keys, the
next and the previous subcode can be selected.
Input parameters:None.
Return values:None.
Comments:None.
MCI1_5 / Magazine number
MCI1_4 / Page number
SDA 5273-3C
Delta Specification
1.3.5.39Text Mode (No. 03)Switches from TV mode to text mode. The switch is done by resetting all transparent
background and foreground bits in the CDW. Further on, any special text modes (i.e.
double height, hold, reveal) are cleared.
Input parameters:None.
Return values:None.
Comments:None.
1.3.5.40Yellow (No. 16) Depending on the current mode the display chapter is changed to the page number
indicated by the yellow button. In TOP mode, this is the next available group or block page marked in the BTT. In FLOF mode, this is the third link of packet x/27 of the current display page.In list mode, this is the list#3 page. In simple mode, this is the next available page in the next tens group.In subpage mode this button is not defined.
After changing the display chapter the new page requests are automatically done.
Input parameters:None.
Return values:None.
Comments:Setting any other page selecting method quits this one. If a
new page request is done, the current page number will be
written in row 0 of the display chapter.
Table 10
SDA 5273-3C
Delta Specification
1.4Setup ParametersThe following table gives an overview of all possible setup parameters. These
parameters are stored in block 0 / row 5 / column 0- 39 / byte 4 of the internal DRAM.
Table 11
Address = Block 0 / Row 5 / Byte 4
