SI2165-D-GMR

Si2165 Multi-Standard DVB-T and DVB-C Demodulator Description Features The Si2165 is a compact standalone DVB-T/C digital TV demodulator ideally matching Silicon Labs’ Si2170/1/2 new hybrid high-performance silicon tuner product family. The analog front-end consists of two ADCs with wide dynamic range (12-bit) to allow operation with standard IF (~36 MHz), Low-IF, or Zero-IF inputs. This enables the use of the Si2165 with any TV tuner, either metal can or silicon tuner based. The multi-standard demodulator supports all modes of DVB-T (EN 300 744), including hierarchical modes. The Si2165 also supports ITU J.83 annex A/C and DVB-C (EN 300 429), including a user-configurable 31-tap equalizer. In addition to DVB-T's legacy modes, the Si2165 also complies with DVB-H (EN 300 744 Annex F) specificities: 4K FFT, extended TPS, “native” and “in-depth” deinterleavers. The Si2165 is able to receive DVB-H programs in fixed receiver applications (without decoding the additional MPE FEC layer). An embedded 32-bit DSP controls device operation. Sophisticated on-chip algorithms ensure optimum reception even under difficult channel conditions, such as echoes outside the guard interval, pre-echoes, or strong impulse noise. For ease-of-use, DSP firmware is preloaded into ROM (device is immediately active at powerup). Nevertheless, there is a possibility of downloading additional patch code via the I2C interface (e.g., to adjust the demodulator to unexpected conditions or reception impairments). Thanks to proprietary features, the Si2165 supports ultra-fast channel scanning for VHF/UHF terrestrial and cable DTV channels. For supported tuners, the Quickscan algorithm for blindscan is running onto the embedded DSP (in order to limit the host CPU load) and is provided as a downloadable patch file. Serial or parallel master MPEG TS output modes are supported. Furthermore, a TS slave parallel mode is available via a GPIF port and provides a glueless interface to Silicon Labs' MCU devices with embedded USB interface. The user can optionally program a 32-PID hardware filter to reduce the output TS bit rate. An internal I2C pass-through logic switch acts as an I2C repeater. This provides a “quiet” I2C bus to the RF front end. A maximum of six general-purpose inputs/outputs are available; three GPIOs also feature / and interrupt output capabilities. Best-in-class demodulation performance is achieved while still maintaining very low-power operation. The Si2165 guarantees a low-cost system implementation due to its minimal BOM and very small package footprint. - DVB-T (ETSI EN 300 744) demodulator & FEC decoder - ITU J.83 Annex A/C and DVB-C (EN 300 429) compliant demodulator & FEC decoder - NorDig Unified 2.0, D-Book & C-Book 4.0 compliant - Suitable for low power design: 140 mW (typical, 36 MHz IF sampling mode) - Dual 12-bit ADCs: accept 1st IF, low IF, or zero-IF inputs DVB-T channel bandwidth: 5, 6, 7, 8 MHz DVB-C symbol rate: 1 to 7.2 MBaud DSP-based synchronization and control with embedded ROM code avoids need for code download at startup - Supports patch code downloads for in-field upgradeability - Independent AGC controls (for IF & RF),  plus RSSI measurement - ACI filtering: fixed 8 MHz SAW filter even for 7 MHz channel Advanced performance for SFN networks Impulsive noise protection algorithm Ultra fast automatic UHF/VHF band scanning (QuickScan) Master TS output modes, parallel or serial (with tri-state function) - Slave TS parallel output: external device polls data from an embedded FIFO, providing a seamless interface to any USB controller. - On-chip PID filtering to reduce TS output bit rate. - Up to six GPIOs - Two 5 V tolerant I2C control buses (host-side, tuner-side)  with on-chip I2C repeater - 4, 16, 20, 24, or 27 MHz clock/crystal reference - 3.3 and 1.2 V power supplies only - Very compact QFN-36, 5 x 6 mm, RoHS compliant package Applications - Digital terrestrial and cable STB, NIM, and iDTV set - Personal Video Recorder (DVD or HDD-based) - Digital terrestrial and cable PC-TV tuner peripheral 1.2, 3.3 V RSSI ADC_IP ADC_IN ADC_QP ADC_QN Si2165 CTRL 8-bit ADC DSP TS I/F 12-bit ADC 12-bit ADC Shared FRONT END DVB-T/C DEMOD EQUALI ZER FEC PID FILTER 4 MHz or TUN_SDA TUN_SCL Digital TV Demodulator Dual AGC Xtal: 16,20, 24,27 MHz I2C SWITCH OSC & PLL GPIO GPIO0..5 TS_SYNC TS_VAL TS_ERR TS_CLK TS_DATA 8 MPEG ASSP (Can or Silicon) TUNER IF_AGC TS & GPIF INTERFACE RF_AGC RESETB µP I/F I2C I/F Copyright © 2009 by Silicon Laboratories HOST_SDA HOST_SCL 8.24.09 Si2165 Multi-Standard DVB-T and DVB-C Demodulator Selected Electrical Specifications Parameter Min Typ Max Unit Ambient Temperature 0 25 85 °C Power-up Time — — 10 ms — 400 kHz General 2 I C Speed (Host side)