PM7820 paladin 20 pmc-2061427, issue 2 ? copyright pmc-sierra, inc. 2006 all rights reserved. proprietary and confidential to pmc-sierra, inc. and for it s customers? internal use. digital multicarrier device product overview the paladin family of digital multic arrier chip technologies enables the development of spectrally effi cient and power efficient 3g and wimax base stations that use fe wer and less expensive components than traditional feedforward desig ns. the paladin products, which include the pm7800 paladin 10, pm7815 paladin 15, PM7820 paladin 20, and the pm7819 paladi n waveshaper, make extensive use of proprietary advanced high-s peed dsp-based architectures and techniques. the PM7820 paladin 20 device inhibi ts distortion in the power amplifier and transmitter chain of ce llular base stations using digital adaptive predistortion technique s. the paladin 20 device supports the new doherty power amplifier (p a) architectures in bts designs, which achieve power efficiencies of more than 40 per cent, doubling the efficiency of currently deployed class a/b ldmos pas. the device also enables integration into sp ace-constrained next generation remote radio head (rrh) architectures, through its 23 mm x 23 mm footprint. as well, the device prov ides 20 mhz of bandwidth for wcdma, cdma2000, and wimax applications. the paladin 20 system comprise s a digital correction signal processor (dcsp) chip and an ad aptive control processor compen- sation engine (acpce). the dcsp applies corrective parameters to each sample in real time, while the acpce automatically adapts the corrective parameters to maintain optimum performance as the distortions change over time. benefits ? the paladin 20 device is the on ly complete, off-the-shelf, production-released, standard product for dpd. ? the paladin family is deployed in carrier networks today. ? the paladin family has proven performance and reliability. ? the paladin family includes pr oduction-ready firmware that implements a comprehensive, in dustry-leading, predistortion algorithm. product highlights ? input signal bandwidth up to 20 mhz ? output sample rate up to 93 mhz ? digital aqm compensation ? automatic gain control to +/-0.1 db ? constant-gain mode to facilitate operation at higher efficiency ? variable input sample rate ? 32-bit complex baseband reference signal input ? 32-bit complex baseband or 16-bit if output ? 16- or 32-bit observ ation signal input ? digital correction of analog quadrature ? modulation distortion for pr actical zero-if upconversion. ? automatic adjustment of correctiv e parameters in response to changing rms signal levels ? algorithm structure ta kes into account the challenging magnitude and phase variations in th e doherty power amplifier ? algorithm's fast adaptation time assists in mitigating the non-linear effects in the pa ? pre-distortion kernel for linearizati on of power amplifiers in wireless base-stations ? built-in interpolation-by- n of baseband input sample rate to the required dcsp sample rate where the integer n can be set to a value between 1 and 10 inclusive ? generic 16-bit microprocessor bus interface for configuration, control, and monitoring ? 48 general-purpose i/o pins, eigh t of which are edge-triggered interrupt sources ? standard five-signal ieee 1149.1 jt ag test port for boundary scan board test purposes preliminary product brief modulation circuitry predistortion and aqm correction engines input module cpu interface capture module paladin 20 core paladin 20 padring vobs jtag vd gpio control dat adr reset_n vref scs_n sd sclk hop_n dclk refclk cpuclk block diagram 4 .com u datasheet
PM7820 paladin 20 digital m ulticarrier device corporate head office: pmc-sierra, inc. mission towers one 3975 freedom circle santa clara, ca, 95054, u.s.a. tel: 1.408.239.8000 fax: 1.408. 492.1157 pmc-2061427, issue 2, ? copyri ght pmc-sierra, inc. 2006. all rights reserved. for a complete list of pmc-sierra?s trademarks , visit www.pmc-sierra.com/legal/. other product and company names mentioned herein may be the trademarks of their respective owners. for corporate information, send email to: info@pmc-sierra.com. all product documentation is available on our web site at: www.pmc-sierra.com. operations head office: pmc-sierra, inc. 100-2700 production way burnaby, bc v5a 4x1 canada tel: 1.604.415.6000 fax: 1.604.415.6200 multiple air interfaces ? supports macro bts, micro bt s, and rrh architectures ? supports up to 4-carrier wcdma systems ? supports up to 16-carr ier cdma2000 systems ? meets the fcc 04-258 wimax specification digital correction signal processor (dcsp) ? includes the following interfaces: ? digital baseband interface to the base station modem (vref) ? digital if or digital baseband interface to dac(s) and rf upconverter (vd) ? digital if interface from adc( s) and rf downconverter (vobs) ? gpio interface for auxliary monitor and control ? cpu interface to acpce processor (external dsp) alarms/debugging capability ? real time tracking of pa state ? alarms that alert users to issues in the field such as potential acpr violation and pa aging ? various pa statistic monitoring (magnitude and phase behavior) ? logging to detect issu es in transmit chai n and observation path firmware ? state-of-the-art firmware provided ? firmware upgradeable to accommodate new features power, temperature & packaging ? maximum 1 w power output ? industrial temperature range (-40 c to +85 c) ? low-power 1.8 v cmos core logic with 3.3 v cmos/ttl compatible digital inputs and digital outputs ? 324-pin pbga with a body size of 23 mm x 23 mm optimized for rrh architectures applications ? multi-carrier wcdma, cdma2000 1x rtt, cdma2000 ev-do, wimax, and wibro base station transmitters pm7832 bric 2 rf processing interconnect waveform processing data conversion cpri interface pm7832 bric 2 cpri interface hi-q clock filtering pm7819 waveshaper carrier combiner crest factor reduction PM7820 paladin 20 adaptive digital predistortion automatic gain control PM7820 paladin 20 pm7819 paladin waveshaper doherty pa ddc ddc lna aqm downconvert downconvert downconvert adc adc adc dac dac lna power amplifier remote radio head rf system further resources wireless bsc/bts products www.pmc-sierra.com/wireless/ technical documentation www.pmc-sierra.com/documentation/ 4 .com u datasheet
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