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参数资料
| 型号： | SAA5491H/NNN |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP80 |
| 封装： | 14 X 20 MM, 2.80 MM HEIGHT, PLASTIC, SOT-318-2, QFP-80 |
| 文件页数： | 18/72页 |
| 文件大小： | 498K |
| 代理商： | SAA5491H/NNN |
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1998 Dec 14
25
Philips Semiconductors
Preliminary specication
Economy teletext and TV microcontrollers
SAA5x9x family
Teletext Register 10 (TXT10) - WRITE only
C5 to C0
memory column to be accessed by TXT11
Teletext Register 11 (TXT11)
D7 to D0
data byte written to, or read from teletext memory
Teletext Register 12 (TXT12) - READ only
625/525 SYNC
a 625-line CVBS signal (logic 0), or a 525-line CVBS signal (logic 1) is being input
ROM VER R4 to R0
mask programmable identication for character set
TXT ON
power has been applied to the teletext hardware (logic 1)
VIDEO SIGNAL
QUALITY
CVBS input can be locked on by the teletext decoder (logic 1)
Teletext Register 13 (TXT13)
VPS RECEIVED
set to logic 1 when VPS data is received
PAGE CLEARING
set when software requested page clear in progress
525 DISPLAY
set to logic 1 when 525-line syncs are driving the display
525 TEXT
set to logic 1 when 525-line teletext is received
625 TEXT
set to logic 1 when 625-line teletext is received
PKT 8/30
set to logic 1 when packet 8/30 is detected
FASTEXT
set to logic 1 when packet X27/0 is detected
TIB
text interface busy; logic 1 indicates that TXT registers 0 to 16 cannot currently be accessed
Teletext Register 14 (TXT 14) - WRITE only; note 3
PAGE3 to PAGE0
selects which page to display
Teletext Register 15 (TXT15) - WRITE only; note 3
BLOCK3 to BLOCK0 selects which memory block accessed by TXT9, 10 and 11
Teletext Register 16 (TXT16) - WRITE only
Y2 to Y0
sets vertical position of display area
X1 to X0
sets horizontal position of display area
Teletext Register 17 (TXT17) - Write only
FORCE ACQ0,1
force acquisition mode
FORCE 625
force display to 625-line mode
FORCE 525
force display to 525-line mode
SCREEN COL 2 to 0 denes colour displayed instead of TV picture and black background
REGISTER
FUNCTION
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SAA5491PS | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Economy teletext and TV microcontrollers |
| SAA5496 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Economy teletext and TV microcontrollers |
| SAA5496H | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Economy teletext and TV microcontrollers |
| SAA5496PS | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Economy teletext and TV microcontrollers |
| SAA5497 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Economy teletext and TV microcontrollers |
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