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Description of AVL2517DA
The AVL2517DA STB SoC is comprised with high performance 32-bit RISC, DVB-S/S2 demodulator, high-definition multi-format video decoding system, outperform audio decoding system, still image decoder, graphics processor, high definition video/graphics display system, transport stream de-multiplexer system, high bandwidth DDR controller, build-in 16-bit 2Gb DDR3 SDRAM, high speed USB2.0 host, USB2.0 high speed ports, peripheral system and so on.
The AVL2517DA equips an embedded DVB-S2 demodulator to be a completed DVB-S2 HD STB solution. It supports QPSK, 8PSK, 16APSK and 32APSK DVB-S2/DVB-S channel receiving. The sophisticated algorithms enable the receiver to handle severe multipath, fading distortion and interference in challenging terrestrial broadcasting environment. The rapid PLL lock leads to good user experience.
AVL2517DA performs real-time digital video decoding and playback of MPEG1, MPEG2, MPEG4, H.264, H.265, MPEG4, AVS, AVS+ and VC1 on both SD and HD source streams. Embedded high performance audio digital signal processor supports MPEG-1 Layer I/II/III, MPEG-2 Layer II and WMA audio playback and processing.
2 FEATURES SUMMARY
2.1 Embedded Processor
Embedded powerful 32-bit RISC processor with instruction and data caches
Embedded 8-bit IOP (I/O processor) for programmable interface control
2.2 Memory Interface
SPI NOR Flash interface
Built-in 2Gb 16-bit DDR3 SDRAM
2.3 DVBS/S2 Demodulator
On-chip 8 bits dual ADC (sampling rate up to 122MHz)
DVB-S Demodulator compliant with EN300421
QPSK with code rate 1/2, 2/3, 3/4, 5/6, 7/8
Symbol rates: 1-55 MSps
DVB-S2 Demodulator compliant with EN302307
QPSK with code rate 1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 8/9, 9/10
8PSK with code rate 3/5, 2/3, 3/4, 5/6, 8/9 and 9/10
16-APSK with code rate 2/3, 3/4, 4/5, 5/6, 8/9 and 9/10
32-APSK with code rate 3/4, 4/5, 5/6, 8/9 and 9/10
QPSK Symbol rate: 1-55Msps
8PSK Symbol rate: 1-55Msps
16APSK Symbol rate: 1-40Msps
32APSK Symbol rate: 1-35Msps
Roll-off factors: 0.2, 0.25, 0.35.
Support constant coding and modulation (CCM)
Support variable coding and modulation (VCM) and multiple transport stream
Fast Blind-Scan for DVB-S/S2
DiSEqC receive/transmit for the control of LNB, dish and other components
Single AGC interface
2.4 Transport Stream De-multiplexer
MPEG-2 transport layer compliant with ISO/IEC 13818-1
Three de-multiplexers
64 programmable PID filters for each de-multiplexer
64 general purpose PIDs for generic section or private PES data
Supports time-shifting function
Supports DVB-CSA/DES/3DES/AES descrambling. (1st and 2nd DEMUX only)
Support T2-MI hardware accelerator. (2nd DEMUX only)
2.5 Video Decoder
Supports MPEG-1 (720x480x30 / 720x576x25) decoding
Supports MPEG-2 MP @ ML and MP@HL decoding
Supports MPEG-4 ASP decoding
Supports up to extended ASP 1080p@30fps
Supports H.264 HD resolution decoding
Fully compliant with ITU-T H.264, ISO/IEC 14496-10, main and high profile up to level 4.2
Supports all DVB, ATSC, HDTV, DVD, VCD resolutions (e.g. 1080p,1080i, 720P, D1)
Decodes up to 1080p@60 fps
Reads streams from either Transport or files
Supports VC1 HD resolution decoding
Supports H.265/HEVC HD resolution decoding (optional)
Fully compliant with ITU-T H.265, ISO/IEC 23008-2, main profile up to level 4.1
Decodes up to 1080p@60 fps
Supports AVS and AVS+ HD resolution decoding
Hardware JPEG decoding
Advanced decoding and display control
2.6 Audio Decoder
Embedded audio processor supporting multiple audio standards
LPCM and PCM playback
WMA playback
MPEG-1 Layer I/II/III and MPEG-2 layer II playback
Dolby DigitalOptional playback
2.7 OSD (On-Screen Display)
One OSD can support more than 15 regions with different formats.
256 indexed color
16-bit/32-bit direct color
Built-in de-flicker
2.8 Video Display and Analog Video Output Interface
De-interlacing of interlaced video source
Flexible vertical interpolation
Flexible horizontal interpolation with optional CIF filter
Embedded HD TV encoder with 1-channel 14-bit video DAC supporting various display standards
480i/480p, 576i/576p, 720p, 1080i format
CVBS,YUV/YPbPr/SCART-RGB output
2.9 HDMI Output Interface
Transmitter engine with an embedded HDCP key
HDMI 1.4 output interface
HDCP encryption engine
Supports SDTV 480/576i, 480/576P formats @ 50Hz/60Hz
Supports HDTV 720P, 1080i,1080p formats @ 50Hz/60Hz
Supports IEC60958 PCM or IEC61937 compressed audio
Oct 2019 Availink Inc. Proprietary and Confidential 9/27
formats
Supports RGB or YCbCr 4:2:2/4:4:4 format
Supports CEC (Consumer Electronics Control) function
2.10 Audio Interface
Embedded 2-channel 24-bit audio DAC with operational amplifier (OPA) output.
IEC958/SPDIF digital output
Supports mute, fade and volume control
Supports one SPDIF digital output for PCM and non-PCM formats
2.11 Peripheral Interface
Supports Two USB 2.0 hosts
Supports UART interface
Supports Smart Card interface
Supports I2C master
Supports IR
2.12 Power Saving Mode
Advanced low power design
Selective standby mode
Programmable low speed operation