SAA5284GP Ver la hoja de datos (PDF) - Philips Electronics
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SAA5284GP Datasheet PDF : 24 Pages
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Philips Semiconductors
Multimedia video data acquisition circuit
Objective specification
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
SYMBOL
PARAMETER
VDD
IDD
Vsync(p-p)
Vi(CVBS)(p-p)
fxtal
Tamb
supply voltage
supply current
sync voltage (peak-to-peak value)
input voltage on pin CVBS0 and CVBS1
(peak-to-peak value)
crystal frequency; see note 1
operating ambient temperature
Note
1. Selectable: 12, 13.5, 15 or 16 MHz.
MIN. TYP. MAX. UNIT
4.5 5.0 5.5 V
−
72 95 mA
0.1 0.3 0.6 V
0.7 1.0 1.4 V
−
12.0 −
MHz
−20 −
+70 °C
4 ORDERING INFORMATION
TYPE NUMBER
SAA5284GP
NAME
QFP44
PACKAGE
DESCRIPTION
plastic quad flat package; 44 leads (lead length 2.35 mm);
body 14 × 14 × 2.2 mm
VERSION
SOT205-1
1998 Feb 05
3
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