參數(shù)資料
型號(hào)： SAA5249
廠商： NXP Semiconductors N.V.
英文描述： Integrated VIP and Teletext with Background Memory Controller IVT1.1BMCX
中文描述： 綜合貴賓和圖文電視的背景內(nèi)存控制器IVT1.1BMCX
文件頁(yè)數(shù)： 26/44頁(yè)
文件大?。?/td> 821K
代理商： SAA5249
1996 Nov 07
26
Philips Semiconductors
Preliminary specification
Integrated VIP and Teletext with
Background Memory Controller
SAA5249
Note
1.
These functions have IN and OUT referring to inside and outside the boxing function respectively.
R7 DISPLAY MODE - does not auto increment
BOX ON 0
BOX ON 1-23
BOX ON 24
DOUBLE HEIGHT
BOTTOM HALF
REVEAL ON
CURSOR ON
STATUS TOP
boxing function allowed on Row 0
boxing function allowed on Rows 1 to 23
boxing function allowed on Row 24
to display double height text
to select bottom half of page when DOUBLE HEIGHT = 1
to reveal concealed text
to display cursor
row 25 displayed above or below the main text
R9 CURSOR ROW - auto increments to register 10
R0 to R4
A0
CLEAR MEM.
active row for data written to or read from memory via the I
2
C-bus
selects display memory page (when = 0) or extension packet memory (when = 1)
when set to 1, clears the display memory; this bit is automatically reset
R10 CURSOR COLUMN - auto increments to register 11 or 11B
C0 to C5
active column for data written to or read from memory via the I
2
C-bus
R11 CURSOR DATA - does not auto increment
D0 to D7
data read from/written to memory via I
2
C-bus, at location pointed to by R9 and
R10. This location automatically increments each time R11 is accessed
R11B DEVICE STATUS - does not auto increment
VCS SIGNAL QUALITY
indicates that the video signal quality is good and PLL is phase locked to input
video when = 1
if a good teletext signal is being received when logic 1
indicated language/ROM variant. For Western European = 11000
if the input video is a 525 line signal when logic 1
TEXT SIGNAL QUALITY
ROM VER R0 to R4
625/525 SYNC
相關(guān)PDF資料
PDF描述
SAA5249P Integrated VIP and Teletext with Background Memory Controller IVT1.1BMCX
SAA5250 Interface for data acquisition and control for multi-standard teletext systems
SAA5250P Interface for data acquisition and control for multi-standard teletext systems
SAA5250T Interface for data acquisition and control for multi-standard teletext systems
SAA5252 Line twenty-one acquisition and display LITOD
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SAA5249GP 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Integrated VIP and Teletext with Background Memory Controller IVT1.1BMCX
SAA5249GP/E 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Integrated VIP and Teletext with Background Memory Controller IVT1.1BMCX
SAA5249P 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Integrated VIP and Teletext with Background Memory Controller IVT1.1BMCX
SAA5249P/E 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Integrated VIP and Teletext with Background Memory Controller IVT1.1BMCX
SAA5250 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Interface for data acquisition and control for multi-standard teletext systems
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