SAA7131E
Global standard low-IF demodulator and PCI audio and video
decoder for analog TV
Rev. 03 — 19 May 2008
Product data sheet
1. General description
The SAA7131E combines a digital global standard low-IF demodulator for analog TV with
a PCI audio and video decoder.
The IF demodulator is an alignment-free digital multistandard vision and sound low-IF
signal PLL demodulator for positive and negative video modulation. It can be used
worldwide for M/N, B/G/H, I, D/K and L/L’ standards. The IF demodulator is especially
suited for the application with the TV Silicon Tuner TDA18271, TDA8275A or equivalent
IC.
The PCI audio and video broadcast decoder is a highly integrated, low-cost and solid
foundation for TV capture in the PC, for analog TV and digital video broadcast (DTV and
DVB). The various multimedia data types are transported over the PCI-bus by bus
master-write, to best exploit the streaming capabilities of a modern host based system;
see
Figure 1.
I
2
C-bus
RF input
(antenna/
cable)
SILICON TUNER
DIGITAL CHANNEL DECODER
VSB
QAM
(1)
QFDM
TDA18271
TDA8275A
DTV
DVB
I
2
C-BUS
EEPROM
(1)
low IF
signal
control
signals
TS
PS
ENCODER:
MPEG2
I
2
S-bus
CVBS
S-video
audio I/O
ITU656
SAA7131E
PCI-bus
001aab084
(1) Alternative.
Fig 1.
Application diagram for capturing live TV video and audio streams in the PC
NXP Semiconductors
SAA7131E
Global standard low-IF and PCI audio and video decoder
2. Features
2.1 Generic properties
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Package: LBGA256
Power supply: 3.3 V/1.8 V
Power consumption of typical application: 1.35 W
Meets requirements of
PC Design Guides 98/99 and 2001
Is compliant with
PCI Specification 2.2
and Advanced Configuration
PCI-bus Power Management Interface Specification, rev. 1.1,
compliant (supported
states: D0, D1, D2 and D3-hot)
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Reference designs available
2.2 Digital global standard low-IF demodulator for analog TV
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Digital IF demodulation for all analog TV standards worldwide (M/N, B/G/H, D/K, I and
L/L’ standards)
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Multistandard true synchronous demodulation with active carrier regeneration
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Gated IF AGC acting on black level by using H/V PLL
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Composite Video Blanking Sync (CVBS) gain levelling stage to provide nearly
constant signal amplitude
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Precise AFC/lock detector
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16 MHz reference frequency input (from low-IF tuner) or operating as crystal oscillator
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High selectivity video low-pass filter for all standards
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Sound performance comparable to or better than QSS single reference concepts
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Alignment free
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Nyquist filter in video baseband
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Switchable IF PLL and IF AGC loop bandwidth
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Accurate group delay equalization for all standards
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Mostly digital FIR filter implementation (NSC notches, video low-pass filters)
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No SAW filter needed
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Especially suited for the Silicon Tuner TDA18271
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Low application effort and external component count in combination with the
TDA18271
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Very robust IF demodulator coping with adverse field conditions
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High pull-in range
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CVBS and SSIF (Second Sound IF)/audio output with simple post filter (capacitor only)
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Excellent FM sound
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Acceptable AM sound
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High FM deviation mode for China
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Low video into sound crosstalk
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Auto or forced mute for sound
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Auto or forced blank for video
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One 10-bit IF ADC on-chip
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Two 10-bit DACs on-chip for CVBS and SSIF/audio
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Internal PLL synthesizer which permits to use a low-cost crystal (typically 16 MHz)
SAA7131E_3
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 — 19 May 2008
2 of 66
NXP Semiconductors
SAA7131E
Global standard low-IF and PCI audio and video decoder
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Easy programming for I
2
C-bus
High flexibility through expert mode
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2
C-bus interface and I
2
C-bus switch
Four I
2
C-bus addresses selectable through 2 external pins
Three general purpose input/output pins
Separate Standby mode.
2.3 TV video decoder and video scaling
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All standards TV decoder: NTSC, PAL and SECAM
Five analog video inputs: CVBS and S-video
Video digitizing by two 9-bit ADCs at 27 MHz
Sampling according ITU-R
BT.601
with 720 pixel/line
Adaptive comb filter for NTSC and PAL, also operates for non-standard signals
Automatic TV standard detection
Three-level Macrovision copy protection detection according to
Macrovision detect
specification Rev.1
Control of brightness, contrast, saturation and hue
Versatile filter bandwidth selection
Horizontal and vertical downscaling or zoom
Adaptive anti-alias filtering
Capture of raw VBI samples
Two alternating settings for active video scaling, e.g. for independent capturing and
preview definition
Output in YUV or RGB
Gamma compensation and black stretching.
2.4 TV sound decoder and TV audio I/O
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All standards TV sound decoder: BTSC, EIAJ, NICAM, FM A2 and AM
dbx-TV noise reduction decoding for BTSC systems
FM radio stereo decoding
Input of analog SIF signal and 8-bit ADC at 24.576 MHz
Automatic sound standard detection
Automatic dematrixing (stereo and dual)
Volume, balance, bass and treble control
Automatic Volume Levelling (AVL)
Incredible Mono and Incredible Stereo
Audio sampling clock can be locked to video frame rate (no drift of audio stream
against video stream)
Four analog audio baseband inputs (two stereo pairs) and on-chip stereo ADCs
Supported audio sampling rates: 32 kHz, 44.1 kHz and 48 kHz
Input of external audio reference clock, e.g. 24.576 MHz
Output of audio master clock (768
×
f
s
, 512
×
f
s
, 384
×
f
s
or 256
×
f
s
selectable).
SAA7131E_3
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 — 19 May 2008
3 of 66
NXP Semiconductors
SAA7131E
Global standard low-IF and PCI audio and video decoder
2.5 PCI and DMA bus mastering
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PCI 2.2 compliant including full Advanced Configuration and Power Interface (ACPI)
3.3 V and 5 V compliant
System vendor ID, etc. through I
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C-bus EEPROM
DMA bus master-write for video, audio, VBI and TS or PS
Configurable PCI FIFOs, graceful overflow recovery
Packed and planar video formats, overlay clipping
Hardware support for virtual addressing by Memory Management Unit (MMU).
2.6 Peripheral interface
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2
C-bus master interface: 3.3 V and 5 V compatible, 100 kHz and 400 kHz mode
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The device can operate without the PCI-bus (using I
2
C-bus) for stand-alone
applications, application note available
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Digital video output: ITU, VIP, VMI and ZV formats
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Two digital audio outputs: I
2
S-bus for up to 4 channels
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Analog stereo audio output
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Integrated analog audio pass-through
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Support for analog audio loopback cable to sound card
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TS input: serial or parallel
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MPEG elementary or program stream input, parallel
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General purpose I/O, e.g. for strapping and interrupt
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Propagate reset and ACPI state D3.
3. Applications
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Desktop and portable PCs
Hybrid cable, terrestrial and satellite set-top boxes
PCTV
Digital television
Personal Video Recorders (PVR)
Digital Video Recorders (DVR)
DVD players and recorders
VCRs
PCI satellite modem
PCI cable modem
Video conferencing
Analog and digital video editing
Data broadcast receiver
Media hub for home server.
SAA7131E_3
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 — 19 May 2008
4 of 66
NXP Semiconductors
SAA7131E
Global standard low-IF and PCI audio and video decoder
4. Ordering information
Table 1.
Ordering information
Package
Name
SAA7131E
LBGA256
Description
Version
plastic low profile ball grid array package; 256 balls; body 17
×
17
×
1 mm SOT740-2
Type number
SAA7131E_3
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 — 19 May 2008
5 of 66
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