Part # Application Note Television ST92195 ST92R195C ST92T195 8-bit MCU for TV AN1863 datasheet

Part Manufacturer: ST Microelectronics

ST Microelectronics

Part Description: ST9 TV Applications: STtext-7p 80-Column Mode


Part Details:

AN1863 APPLICATION NOTE ST9 TV APPLICATIONS: STtext-7p 80-COLUMN MODE 1 INTRODUCTIONThe purpose of this application note is to explain how to manage the STtext-7page 80-columnfeatures in TV chassis software. This information applies to STtext-7page version V6.5 andhigher. STtext-7page allows teletext to be displayed in 80-column width instead of 40-column width. In 80-column width mode, 4 options are available: Compressed Header and Status Row. Uncompressed FLOF/TOP Status Row. Double page Teletext. Copy RHS to LHS and Freeze of LHS page. 2 COMPRESSED HEADER AND STATUS ROWThis feature enables compression of the header and status rows into 20-character width (in-stead of normal 40-character width) in all modes: BASIC, LIST, FLOF and TOP mode. Theheader and status rows will therefore be displayed only on the right half of the TV screen. Theleft half of the header and status rows are cleared. This feature is activated by: Compilation option: `80_col_and_video = `1. Variable_Util_11 bit4 must be set. Rev. 2 AN1863/0704 1/11 AN1863 - APPLICATION NOTE Figure 1. Compressed Header and Status Row feature P500 08:41:09 S P O R T E X T CLASSIFIED INDEX Bookmakers .................. 530Reiseschnäppchen ....... 560 Dutch classifieds ........... 580 To advertise 0044 (0) 1 722 7066 - + 530 600 2/11 AN1863 - APPLICATION NOTE 3 UNCOMPRESSED FLOF/TOP STATUS ROWThis feature enables compression of BASIC/LIST/FLOF/TOP Header and BASIC/LIST statusrow into 20-character width (instead of normal 40-character width). However, in FLOF andTOP mode, the status row remains in 40-character width. It allows the user to retrieve the orig-inal content of the displayed page header and status rows. The chassis software will then com-press TOP/FLOF status row in its own format. This feature is activated by: Compilation option: `80_col_and_video = `1 . Variable_Util_11 bit4 must be set. Variable_Util_7 bit4 must be set. Figure 2. Uncompressed FLOF/TOP status row feature P500 08:41:09 S P O R T E X T CLASSIFIED INDEX Bookmakers .................. 530Reiseschnäppchen ....... 560 Dutch classifieds ........... 580 To advertise 0044 (0) 1 722 7066 - + Bookmakers Travel 3/11


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Application Note Television ST92195 ST92R195C ST92T195 8-bit MCU for TV AN1863.pdf Datasheet