參數(shù)資料
型號： SAA5249P
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
文件頁數(shù)： 25/44頁
文件大?。?/td> 821K
代理商： SAA5249P
1996 Nov 07
25
Philips Semiconductors
Preliminary specification
Integrated VIP and Teletext with
Background Memory Controller
SAA5249
Notes
1.
2.
The dash (
) indicates these bits are inactive and must be written to logic 0 for future compatibility.
All bits in registers R0 to R10 are cleared to logic 0 on power-up except bits D0 and D1 of Registers R1, R5 and R6
which are set to logic 1.
All memory is cleared to space (00100000) on power-up, except Row 0 Column 7 Chapter 0, which is alpha white
(00000111) as the acquisition circuit is enabled but the page is on hold.
TB must be set to logic 0 for normal operation.
The I
2
C-bus slave address is 0010001.
3.
4.
5.
Table 8
Register description
R0 ADVANCED CONTROL - auto increments to register 1
R11/R11B SELECT
DISABLE ODD/EVEN
DISPLAY STATUS ROW
selects reading of R11 or R11B
forces ODD/EVEN output LOW when logic 1
when SET = 1 and R1D6 = 1 open (8-bit mode) then all the text display is blanked
out apart from the status row, this allows the page memory to be used for
non-textural data, such as in the German TOP system
disables green rolling header and time
when set forces ODD/EVEN LOW if any TV picture displayed, if DISABLE
ODD/EVEN = 0
will force the PLL to free run in all conditions
automatic display of FASTEXT prompt row when logic 1
DISABLE HDR ROLL
AUTO ODD/EVEN
FREE RUN PLL
X24 POS
R1 MODE - auto increments to register 2
T0, T1
TCS ON
DEW/FULL FIELD
DISABLE PKT 26
ACQ ON/OFF
7 + P/8-BIT
VCS TO SCS
interlace/non-interlace 312/313 line control (see Table 10)
text composite sync or direct sync select (see Table 10 for FFB mode selection)
field-flyback or full-channel mode
disable automatic processing of packet 26
acquisition circuits turned off when logic 1
7-bits with parity checking or 8-bit mode
when logic 1 enables display of messages with 60 Hz input signal
R2 PAGE REQUEST ADDRESS - auto increments to register 3
COL SCO - SC2
TB
point to start column for page request data (see Table 9)
must be logic 0 for normal operation
R3 PAGE REQUEST DATA - does not auto increment
(see Table 9)
CLEAR B.M.
when set to logic 1. Useful when transmission channel changes
R5 NORMAL DISPLAY CONTROL - auto increments to register 6
R6 NEWSFLASH/SUBTITLE DISPLAY CONTROL - auto increments to register 7;
(note 1)
PON
TEXT
COR
BKGND
picture on
text on
contrast reduction on
background colour on
相關(guān)PDF資料
PDF描述
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
SAA5252P Line twenty-one acquisition and display LITOD
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
SAA5250P 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
SAA5250T 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
SAA5252 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Line twenty-one acquisition and display LITOD
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