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參數(shù)資料
| 型號： | SDA5251M-2 |
| 廠商： | SIEMENS A G |
| 元件分類： | 圖文 |
| 英文描述： | ICs for Consumer Electronics |
| 中文描述： | TELETEXT DECODER, PQFP64 |
| 文件頁數(shù)： | 4/23頁 |
| 文件大?。?/td> | 147K |
| 代理商： | SDA5251M-2 |
SDA 525X-2
Semiconductor Group
4
1998-10-08
1
As its predecessors SDA 525x the SDA 525x-2 contains a slicer for VPS and TTX, an
accelerating acquisition hardware module, a display generator for “Level 1.5” TTX data,
and an 8 bit microcontroller running at 333 ns cycle time. The controller with dedicated
hardware guarantees flexibility, does most of the internal processing of TTX acquisition,
transfers data to/from the external memory interface and receives/transmits data via I
2
C
user interface. The block diagram shows the internal organization of the SDA 525x-2.
The slicer combined with dedicated hardware stores TTX data in a VBI buffer of
746 Byte. The microcontroller firmware performs all the acquisition tasks (hamming- and
parity-checks, page search and evaluation of header control bits) once per field.
This delta specification describes the differences of the SDA 525x-2 compared to the
SDA 525x as described in the preliminary data sheet 1997-09-01.
General Description
2
New features compared to SDA 525x-Specification, version 06/96 are printed in
italic
and bold
. As described in the errata sheet 03/97, release 1.0, the newer versions of the
SDA 525x and the SDA 525x-2 will
not have a serial port (UART)
any more.
Acquisition:
– Feature selection via special function register
– Simultaneous reception of TTX, VPS, and WSS
– Fixed framing code for VPS and TTX
– Acquisition during VBI
– Direct access to VBI RAM buffer
– Acquisition of packets x/26, x/27, 8/30 (firmware)
– Assistance of all relevant checks (firmware)
– 1-bit framing code error tolerance (switchable)
Display:
– Features selectable via special function register
– 50/60 Hz display
(
optional 100 Hz
)
– Level 1.5 serial attribute display pages
– Blanking and contrast reduction output
– 8 direct addressable display pages for SDA 5250-2, SDA 5254-2 to SDA 5257-2
(
optional 10 pages
)
– 1 direct addressable display page for SDA 5251-2 to SDA 5253-2
– 12
×
10 character matrix
– 96 character ROM (standard G0 character set)
–
156
national option characters for
12
languages (for European version)
– 288 characters for X/26 display
– 64 block mosaic graphic characters
– 32 characters for OSD in expanded character ROM + 32 characters
inside OSD box
Complete Feature List Including New Features
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| SDA5252 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:ICs for Consumer Electronics |
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| SDA5252M | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:ICs for Consumer Electronics |
| SDA5252M-2 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:ICs for Consumer Electronics |
| SDA5254 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:ICs for Consumer Electronics |
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