
1998 Apr 09
4
Philips Semiconductors
Product specication
Multimedia bridge, high performance
Scaler and PCI circuit (SPCI)
SAA7146A
1.5
General
Subsystem (board) vendor ID support for board
identification via software driver
Internal arbitration control
Diagnostic support and event analysis
Programmable Vertical Blanking Interval (VBI) data
region for e.g. to support INTERCAST, teletext, closed
caption and similar applications
3.3 V supply enables reduced power consumption, 5 V
tolerant I/Os for 5 V PCI signalling environment.
2
GENERAL DESCRIPTION
The SAA7146A, Multimedia PCI-bridge, is a highly
integrated circuit for DeskTop Video (DTV) applications.
The device provides a number of interface ports that
enable a wide variety of video and audio ICs to be
connected to the PCI-bus thus supporting a number of
video applications in a PC. One example of the application
capabilities is shown in Fig.49.
Figure 1 shows the various interface ports and the main
internal function blocks.
3
QUICK REFERENCE DATA
4
ORDERING INFORMATION
SYMBOL
PARAMETER
MIN.
TYP.
MAX.
UNIT
VDDD
digital supply voltage
3.0
3.3
3.6
V
IDDD(tot)
total digital supply current
400
mA
Vi;Vo
data input/output levels
TTL compatible
fLLC
LLC input clock frequency
32
MHz
fPCI
PCI input clock frequency
33
MHz
fI2S
I2S input clock frequency
12.5
MHz
Tamb
operating ambient temperature
0
70
°C
TYPE NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
SAA7146AH
QFP160
plastic quad at package; 160 leads (lead length 1.95 mm);
body 28
× 28 × 3.4 mm; high stand-off height
SOT322-1
SAA7146AHZ
SQFP208
plastic shrink quad at package; 208 leads (lead length 1.3 mm);
body 28
× 28 × 3.4 mm
SOT316-1