
2004 Jul 22
5
Philips Semiconductors
Product specication
Multistandard video decoder with adaptive
comb lter and component video input
SAA7118
It is a highly integrated circuit for desktop video and similar
applications. The decoder is based on the principle of
line-locked clock decoding and is able to decode the colour
of PAL, SECAM and NTSC signals into ITU 601
compatible colour component values. The SAA7118
accepts CVBS or S-video (Y/C) as analog inputs from TV
or VCR sources, including weak and distorted signals as
well as baseband component signals Y-PB-PR or RGB. An
expansion port (X port) for digital video (bidirectional half
duplex, D1 compatible) is also supported to connect to
MPEG or a video phone codec. At the so called image port
(I port) the SAA7118 supports 8 or 16-bit wide output data
with auxiliary reference data for interfacing to VGA
controllers.
The target application for the SAA7118 is to capture and
scale video images, to be provided as a digital video
stream through the image port of a VGA controller, for
capture to system memory, or just to provide digital
baseband video to any picture improvement processing.
The SAA7118 also provides a means for capturing the
serially coded data in the vertical blanking interval (VBI
data). Two principal functions are available:
1. To capture raw video samples, after interpolation to
the required output data rate, via the scaler
2. A versatile data slicer (data recovery) unit.
The SAA7118 also incorporates field-locked audio clock
generation. This function ensures that there is always the
same number of audio samples associated with a field, or
a set of fields. This prevents the loss of synchronization
between video and audio during capture or playback.
All of the ADCs may be used to digitize a VSB signal for
subsequent decoding; a dedicated output port and a
selectable VSB clock input is provided.
The circuit is I2C-bus controlled (full write/read capability
for all programming registers, bit rate up to 400 kbit/s).
4
QUICK REFERENCE DATA
Note
1. Power dissipation is measured in component mode (four ADCs active) and 8-bit image port output mode, expansion
port is 3-stated.
5
ORDERING INFORMATION
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
VDDD
digital supply voltage
3.0
3.3
3.6
V
VDDD(C)
digital core supply voltage
3.0
3.3
3.6
V
VDDA
analog supply voltage
3.1
3.3
3.5
V
Tamb
ambient temperature
0
70
°C
PA+D
analog and digital power dissipation
1.1
1.35
W
TYPE
NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
SAA7118E
BGA156
plastic ball grid array package; 156 balls; body 15
× 15 × 1.15 mm
SOT472-1
SAA7118H
QFP160
plastic quad at package; 160 leads (lead length 1.6 mm);
body 28
× 28 × 3.4 mm; high stand-off height
SOT322-2