SI47920/21 copyright ? 2015 by silicon laboratories 3.12.2015 arm cortex m3 if agc xtali xtalo clko icp icn lna fmi fmo lna agc ami amvag dclk0 dfs0 dout0 intb rstb nvsclk nvssb nvmosi nvmi so mi so/ a0 mosi / sda sclk/ sc l ssb/ a1 smode spi/i 2 c flash interface vd va vio2 vi o1 power supplies 7:4 mux ain0p ain0n ai n1p ain1n ai n2p ai n2n ai n3p ai n3n ai n4p ai n4n ain5p ain5n ai n6n ai n6p aout3 aout2 aout1 aout0 di clk2 di fs2 di n2 diclk1 difs1 din1 di clk0 difs0 din0 adc adc adc adc audio input port 2 audio input port 1 audio input port 0 audio output port 0 program ram data ram debugp debugn isfsp isfsn zifiout zifclk zifqout ziffs dac dac dac dac gp2 gp1 gp0 radio dsp adc adc dclk1 dfs1 dout1 audio output port 1 audio hub + audio dsp (hi-fi2 ep) agc aout5 aout4 dacref dac dac SI47920/21 high-performance automotive am/fm radio receiver and hd radio? tuner with audio system features - worldwide fm band support (64?108 mhz) - worldwide am band support (520?1710 khz) - lw band support (144?288 khz) - sw band support (2.3?30 mhz) - on-chip soft-decision rds/rdbs demodulator/decoder - am/fm: - comprehensive am/fm signal processing firmware - integrated active fm buffer for background/data ? tuners - analog fm phase diversity with two, three or four ? tuners (si47921 only) - fully integrated agc for am and fm inputs - hd radio (si47921 only): - digital i/q interface to hd radio processor - am/fm hd radio iboc blend - fast fm hd radio band scan ? - audio: - hifi2-ep audio-dsp with 288 kb for program and data memory - seven analog audio inputs - four analog audio outputs - five digital audio ports (i 2 s) - up to 24 synchronous or asynchronous sample ? rate converters - multi-channel audio reference - design - frequency synthesizer with fully - integrated pll-vco - integrated clock oscillator - 1.8 v or 3.3 v digital power supply - 3.3 v analog and 1.8 v digital - power supplies - qfn 84-pin, 12x12x0.85 mm - pb-free/rohs compliant - aec-q100 qualified description the SI47920/21 integrates am/fm radio receiver with audio processing. the analog am/fm receiver sets a new standard for automotive br oadcast reception. the integrated audio processing sub-system enables to synchronize, process, aggregat e and distribute all digital and analog audio signals in the head-unit. the SI47920/21 is the most integrated monolithic ic in the industry with the smallest external bill of materials. SI47920/21 based systems can scale from low-cost single tuner am/fm radio to highe st performance systems with multiple tuners and multiple antennas, enabling the radio suppliers to reuse their r&d across multiple product lines, all with a common software api. the SI47920/21 meets rigorous automotive quality standards. applications - automotive oem infotainment systems - aftermarket car radio systems
SI47920/21 copyright ? 2015 by silicon laboratories 3.12.2015 pin assignments package information ziffs 48 zifqout 49 zifclk 50 zifiout 51 isfsn 52 isfsp 53 debugn 54 nc 8 dacref 7 xtali 6 xtalo 5 clko 4 aout5 3 aout4 2 aout3 1 fmi 10 nc 9 f ain6p 31 ain2p 23 ain2n 24 ain3p 25 ain3n 26 ain4p 27 ain4n 28 ain5p 29 aout2 84 aout1 83 aout0 82 icp 81 icn 80 difs0 79 diclk0 78 din0 77 gp0 76 gp2 75 vd 45 dbyp 46 gp1 74 din1 73 ssb/a1 43 vio1 44 ain6n 32 rstb 33 ami 12 nc 11 f vio2 47 abyp 17 nc 16 nc 15 fmo 14 amvag 13 ain0p 19 va 18 f ain1p 21 ain0n 20 ain1n 22 ain5n 30 miso/a0 40 smode 34 nvmiso 35 nvmosi 36 nvssb 37 nvsclk 38 mosi/sda 41 sclk/scl 42 intb 39 dout1 58 dfs0 59 dclk0 60 dout0 61 nc 62 nc 63 debugp 55 dfs1 56 dclk1 57 diclk1 72 difs1 71 din2 70 diclk2 69 difs2 68 nc 67 nc 66 nc 65 nc 64 dimensions min nom max a 0.80 0.85 0.90 a1 0.00 0.03 0.05 b 0.20 0.25 0.30 d 12.00 bsc. d2 5.40 5.50 5.60 e0.50 bsc. e 12.00 bsc. e2 5.40 5.50 5.60 l 0.35 0.40 0.45 r0.075? ? s??0.075 aaa ? ? 0.10 bbb ? ? 0.10 ccc ? ? 0.08 ddd ? ? 0.10 notes: 1. all dimensions shown are in millimeters (mm) unless otherwise noted. 2. dimensioning and tolerancing per ansi y14.5m-1994. 3. this drawing conforms to jedec outline mo-220, variation vjjd-2 4. recommended card reflow profile is per the jedec/ipc j-std-020 specification for small body components. ? SI47920/21 high-performance automotive am/fm radio receiver and hd radio? tuner with audio system
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