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參數(shù)資料
| 型號： | 935260938557 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP44 |
| 封裝： | PLASTIC, SOT-205, QFP-44 |
| 文件頁數(shù)： | 20/26頁 |
| 文件大?。?/td> | 197K |
| 代理商： | 935260938557 |
1998 Feb 05
3
Philips Semiconductors
Objective specication
Multimedia video data acquisition circuit
SAA5284
1
FEATURES
High performance multi-standard data slicer
Intercast (Intel Corporation) compatible
Teletext (WST, Chinese teletext) (625 lines)
Teletext (US teletext, NABTS and MOJI) (525 lines)
Wide Screen Signalling (WSS), Video Programming
Signal (VPS)
Closed Caption (Europe, US)
Data broadcast, PDC (packet 30 and 31)
User programmable data format (programmable framing
code)
2 kbytes data cache on-chip to avoid data loss and
reduce host CPU overhead
Filtering of packets 30 and 31 WST/NABTS
Choice of clock frequencies, direct-in clock or crystal
oscillator
Parallel interface, Motorola, Intel and digital video bus
I2C-bus control
Data transport by digital video bus
Choice of programmable interrupt, DMA or polling
driven
Data type selectable video line by video line, with
Vertical Blanking Interval and Full Field mode
Single IC with few external components and small
footprint QFP44 package
Optimized for EMC.
2
GENERAL DESCRIPTION
The SAA5284 is a Vertical Blanking Interval (VBI) and Full
Field (FF) video data acquisition device tailored for
application on PC add-in cards, PC mother-boards, set-top
boxes and as a SAA5250 replacement. The IC in
combination with a range of software modules will acquire
most existing formats of broadcast VBI and FF data.
These associated software modules are available under
licence. Scope is provided for acquiring some as yet
unspecified formats. The SAA5284 incorporates all the
data slicing, parallel interface, data filtering and control
logic. It is controlled either by a parallel interface or
I2C-bus. It can output ASCII VBI data as pixels on the
digital video bus where no parallel port is available. It is
available in a QFP44 package.
3
QUICK REFERENCE DATA
Note
1. Selectable: 12, 13.5, 15 or 16 MHz.
4
ORDERING INFORMATION
SYMBOL
PARAMETER
MIN.
TYP.
MAX.
UNIT
VDD
supply voltage
4.5
5.0
5.5
V
IDD
supply current
72
95
mA
Vsync(p-p)
sync voltage (peak-to-peak value)
0.1
0.3
0.6
V
Vi(CVBS)(p-p)
input voltage on pin CVBS0 and CVBS1
(peak-to-peak value)
0.7
1.0
1.4
V
fxtal
crystal frequency; see note 1
12.0
MHz
Tamb
operating ambient temperature
20
+70
°C
TYPE NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
SAA5284GP
QFP44
plastic quad at package; 44 leads (lead length 2.35 mm);
body 14
× 14 × 2.2 mm
SOT205-1
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