The QAMi5107 is a low-cost QAM demodulator and MPEG2 decoder SOC for set-top boxes. It features ITU-T J.83 A/C, DVB-C and TSMF compliance, full video and audio decoding features, comprehensive on-chip peripherals, and advanced security features that are compatible with the latest CA requirements.
The QAMi5107 is an integrated demodulator/decoder solution designed for digital cable receivers. It processes QAM carriers to provide IF to MPEG-2 block processing for compressed video, sound, and data services. The device supports ITU-T J.83 and DVB-C standards and includes features for advanced security, descrambling, and smart card interfaces.
The chip utilizes a unified SDRAM-based memory architecture with an enhanced ST20 32-bit VL-RISC CPU running at 200 MHz. It includes comprehensive on-chip peripherals such as UARTs, parallel I/O, and a smart card interface. The solution is targeted at worldwide cable markets, offering a single-chip approach to reduce BOM costs for digital conversion of analog networks.
| CPU | Enhanced ST20 32-bit VL-RISC CPU |
|---|---|
| CPU Frequency | 200 MHz |
| Instruction Cache | 4-Kbyte |
| Data Cache | 4-Kbyte |
| SRAM | 2-Kbyte |
| SDRAM Interface | Up to 166 MHz, 16-bit wide |
| DDR Interface | 133 MHz |
| Operating Voltage | 1.0 V |
| Video Output Formats | RGB, CVBS, Y/C and YUV |
| Audio Output | MPEG-1 layers I/II, Dolby streams on S/PDIF |
| Compliance | ITU-T J.83 A/C, DVB-C, TSMF |
The device is compliant with ITU-T J.83 Annexes A/C, DVB-C, and TSMF specifications.
The demodulator supports 16, 32, 64, 128, and 256 point constellations.
Yes, it includes DVB and ICAM descramblers together with a smart card interface to support major conditional access systems.