DATASHEET HSP50214B FN4450 Rev 4.00 Programmable Downconverter May 1, 2007 The HSP50214B Programmable Downconverter converts Features digitized IF data into filtered baseband data which can be Up to 65MSPS Front-End Processing Rates (CLKIN) and processed by a standard DSP microprocessor. The 55MHz Back-End Processing Rates (PROCCLK) Programmable Downconverter (PDC) performs down Clocks May Be Asynchronous conversion, decimation, narrowband low pass filtering, gain Processing Capable of >100dB SFDR scaling, resampling, and Cartesian to Polar coordinate Up to 255-Tap Programmable FIR conversion. Overall Decimation Factor Ranging from 4 to 16384 The 14-bit sampled IF input is down converted to baseband Output Samples Rates to 12.94MSPS with Output by digital mixers and a quadrature NCO, as shown in the Bandwidths to 982kHz Lowpass Block Diagram. A decimating (4 to 32) fifth order Cascaded 32-Bit Programmable NCO for Channel Selection and Integrator-Comb (CIC) filter can be applied to the data Carrier Tracking before it is processed by up to 5 decimate-by-2 halfband Digital Resampling Filter for Symbol Tracking Loops and filters. The halfband filters are followed by a 255-tap Incommensurate Sample-to-Output Clock Ratios programmable FIR filter. The output data from the Digital AGC with Programmable Limits and Slew Rate to programmable FIR filter is scaled by a digital AGC before Optimize Output Signal Resolution Fixed or Auto Gain being re-sampled in a polyphase FIR filter. The output Adjust section can provide seven types of data: Cartesian (I, Q), Serial, Parallel, and FIFO 16-Bit Output Modes polar (R, ), filtered frequency (d dt), Timing Error (TE), and AGC level in either parallel or serial format. Cartesian to Polar Converter and Frequency Discriminator for AFC Loops and Demodulation of AM, FM, FSK, and DPSK Input Level Detector for External I.F. AGC Support Pb-Free Plus Anneal Available (RoHS Compliant) Applications Single Channel Digital Software Radio Receivers Base Station Rxs: AMPS, NA TDMA, GSM, and CDMA Compatible with HSP50210 Digital Costas Loop for PSK Reception Evaluation Platform Available Ordering Information PART NUMBER PART MARKING TEMP. RANGE (C) PACKAGE PKG. DWG. NO. HSP50214BVC HSP50214BVC 0 to +70 120 Ld MQFP Q120.28x28 HSP50214BVCZ (Note) HSP50214BVCZ 0 to +70 120 Ld MQFP (Pb-free) Q120.28x28 HSP50214BVI HSP50214BVI -40 to +85 120 Ld MQFP Q120.28x28 HSP50214BVIZ (Note) HSP50214BVIZ -40 to +85 120 Ld MQFP (Pb-free) Q120.28x28 NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. FN4450 Rev 4.00 Page 1 of 62 May 1, 2007HSP50214B Block Diagram MICROPROCESSOR READ/WRITE CONTROL C(7:0) AGC LOOP FILTER AGC LEVEL DETECT I OUT TH 5 POLYPHASE SEROUTA ORDER FIR AND CARTESIAN CIC MAG. HALFBAND SEROUTB FILTER TO FILTERS AOUT(15:0) POLAR IN(13:0) PHASE COORDINATE TH BOUT(15:0) 5 POLYPHASE GAIN CONVERTER ORDER FIR AND ADJ CIC HALFBAND (2:0) FILTER Q OUT FILTERS CARRIER COF NCO FREQ SOF DISCRIMINATOR RESAMPLING CLKIN NCO PROCCLK TIMING ERROR REFCLK FN4450 Rev 4.00 Page 2 of 62 May 1, 2007 INPUT SECTION HALFBAND HALFBAND FILTERS FILTERS 255-TAP 255-TAP FIR FILTER FIR FILTER OUTPUT FORMATTER