SAA7133
General Description
The PCI audio and video broadcast decoder SAA7133HL 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 optimize the streaming capabilities of a modern host based system; see Figure 1. Legacy requirements are also taken care of.
The SAA7133HL meets the requirements of PC Design Guides 1998, 1999 and 2001 and is PCI 2.2 and Advanced Configuration and Power Interface (ACPI) compliant.
The analog video is sampled by 9-bit ADCs, decoded by a multi-line adaptive comb filter and scaled horizontally, vertically and by field rate. Multiple video output formats (YUV and RGB) are available, including packed and planar, gamma-compensated or black-stretched.
Analog TV sound is digitized and stereo decoded (BTSC and EIAJ). Audio is streamed digitally via the PCI-bus or the I²S-bus or routed as an analog signal via the loop back cable to the sound card. The SAA7133HL provides a versatile peripheral interface to support system extensions, e.g. MPEG encoding for time shift viewing.
The channel decoder for digital video broadcast reception (ATSC or DVB) can re-use the integrated video ADCs.
The Transport Stream (TS) or Program Stream (PS) is collected by a tailored interface and pumped through the PCI-bus to the system memory in well-defined buffer structures. Various internal events, or peripheral status information, can be enabled as an interrupt on the PCI-bus.
Key Features
General
- Package: LQFP128
- Power supply: 3.3 V only
- Power consumption of typical application: 1.35 W
- PCI-bus power management interface specification, rev. 1.1, compliant (supported states: D0, D1, D2 and D3-hot)
- Power-down state (D3-hot): < 20 mW
- All interface signals 5 V tolerant
- Reference designs available
- Software Development Kit (SDK) for Windows (2000 and XP), Video for Windows (VfW), Windows Driver Model (WDM) and Broadcast Driver Architecture (BDA)
TV video decoder and video scaling
- 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 pixels per line
- Adaptive comb filter for NTSC and PAL, also operating 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, black stretching
TV sound decoder and TV audio I/O
- BTSC and EIAJ TV sound decoder
- 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, dual)
- Volume, balance, bass and treble control
- Automatic Volume Levelling (AVL)
- Incredible Mono, 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 x fs, 512 x fs, 384 x fs or 256 x fs selectable)
PCI and DMA bus mastering
- PCI 2.2 compliant including full Advanced Configuration and Power Interface (ACPI)
- 3.3 V and 5 V compliant
- System vendor ID, etc. via I²C-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)
Peripheral interface
- I²C-bus master interface: 3.3 V and 5 V compatible, 100 kHz and 400 kHz mode
- The device can operate without PCI-bus (using I²C-bus) for stand-alone applications
- Digital video output: ITU, VIP, VMI and ZV formats
- Two digital audio outputs: I²S-bus for up to 4 channels
- Analog stereo audio output
- Integrated analog audio pass-through
- Support for analog audio loop back cable to sound card
- TS input: serial or parallel
- MPEG elementary or program stream input, parallel
- General purpose I/O, e.g. for strapping and interrupt
- Propagate reset and ACPI state D3
Block Diagram
