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DVB-S FTA/CI/CAS STB reference design
General description
Our DVB-S STB is a complete design package with a full software solution. Incorporating NXP’s CX24142 satellite system-on-chip, it supports free-to-air STBs worldwide including common interface and conditional access systems.
Blockdiagrams
Key features
- Complete STB software solution
- CX24142 SoC with 150 MIPS ARM920T CPU
- CX24109 silicon tuner
- High sensitivity LNA and loopthrough circuit
- 1.25 V core voltage
- Integrated voltage-controlled crystal oscillator (VCXO)
- Integrated 10 bit video DACs
- Smart card interface on-chip
- Integrated high-speed data port, RS-232 and JTAG interfaces
- Supports NDS MediaHighway Core middleware
- Embedded NDS ICAM conditional access
Background information
The system receives and down-converts QPSK satellite digital video signals to baseband with the CX24109 RF tuner. The CX24142 then performs the QPSK demodulation, MPEG-2 audio and video decoding, and TV encoding functions. Very high integration, coupled with a two-layer PCB and low-cost front panel design, reduces the overall system bill of materials for set-top box manufacturers.
To accelerate development time-to-market, NXP offers a complete reference design package together with an unprecedented level of localized design and sales support. The DVB-S FTA / CI / CAS satellite STB reference design kit includes samples, schematics, layout, BOM, STB drivers, user interface (UI) reference software and complete hardware and software documentation. The UI includes support for auto scan, DiSEqC 2.x control, 7-day electronic program guide (EPG), teletext and multiple languages.