may 2010 ? 2008 fairchild semiconductor corporation www.fairchildsemi.com fsa9280a / fsa9288a ? rev 1.0.3 fsa9280a / fsa9288a ? usb port multimedia switch, featuring automatic select and accessory detection fsa9280a / fsa9288a usb port multimedia switch featuring automatic select and accessory detection features signals audio, usb, uart, usb charging switch mechanism automatic switching with available interrupt accessory detection headsets (headphone/mic/remote) usb data port uart serial link usb chargers (car-kit, cdp, dcp) factory-mode tty converter usb fs and hs 2.0 compliant usb charging battery charging 1.1 compliant integrated power fet over-voltage protection (ovp) 28v over-current protection (ocp) 1.5a fsa9280a ? 6.8v ovp fsa9288a ? 8.0v ovp audio left, right, mic, tty v bat 3 to 4.4v programmability i 2 c? esd 15kv iec 61000-4-2 air gap package 20-lead umlp (3 x 4 x 0.55mm, 0.5mm pitch) ordering information FSA9280AUMX fsa9288aumx description the fsa9280a and fsa9288a are high-performance multimedia switches featuring automatic switching and accessory detection for the usb port. these switches allow the sharing of a common usb port to pass audio, usb data / charging, as well as factory programmability. in addition, the fsa9280a / fsa9288a integrate detection of accessories, such as headphones, headsets (mic / button), car chargers, usb chargers, and uart data cables with the ability to use a common usb connector. the fsa9280a / fsa9288a can be programmed for manual switching or automatic switching of data paths based on accessory detected. fsa9280a / fsa9288a include an integrated 28v over-voltage and 1.5a over-current protected fet. applications ? mobile phones & portable media players related resources ? fsa9280a / fsa9288a evaluation board ? feb - evaluation board users guide ? for samples, questions or board requests; please contact analogswitch@fairchildsemi.com figure 1. typical application fsa9280a
confidential and propriet ary ? do not distribute ? 2008 fairchild semiconductor corporation www.fairchildsemi.com fsa9280a / fsa9288a ? rev 1.0.3 2 fsa9280a / fsa9288a ? usb port multimedia switch, featuring automatic select and accessory detection table of contents features ...................................................................................................................... ................................................................. 1 description ................................................................................................................... ................................................................ 1 applications .................................................................................................................. ................................................................ 1 related resources ............................................................................................................. .......................................................... 1 block diagram ................................................................................................................. ............................................................. 3 pin configuration ............................................................................................................. ............................................................. 3 pin descriptions .............................................................................................................. ............................................................. 4 1. functi onality............................................................................................................... ......................................................... 5 1.1. functional overview ...................................................................................................... ............................................. 5 2. power-up & reset ............................................................................................................................... ................................ 6 2.1. reset .................................................................................................................... ...................................................... 6 2.1.1. hardware reset ......................................................................................................... ........................................ 6 2.1.2. software reset ......................................................................................................... ......................................... 6 3. i 2 c ............................................................................................................................. .......................................................... 7 4. configuration .............................................................................................................. ........................................................ 8 5. detection .................................................................................................................. .......................................................... 8 5.1. usb port detection ....................................................................................................... ............................................ 10 5.2. audio accessory detection ................................................................................................ ....................................... 12 5.3. ocp and ovp detection .................................................................................................... ...................................... 13 6. processor communication .................................................................................................... ............................................ 13 7. switch configuration ....................................................................................................... .................................................. 13 7.1. manual switching ............................................................................................................................... ....................... 14 8. active signal performance .................................................................................................. ............................................. 15 8.1. usb data ................................................................................................................. ................................................. 15 8.2. fs usb ................................................................................................................... .................................................. 15 8.3. audio .................................................................................................................... .................................................... 15 9. electrical sp ecifications .................................................................................................. .................................................. 16 9.1. absolute maximum ratings ................................................................................................. ..................................... 16 9.2. recommended oper ating conditions ......................................................................................... .............................. 16 9.3. switch path dc elec trical characteristics................................................................................. ................................ 16 9.4. capac itance .............................................................................................................. ................................................ 18 9.5. switch path ac elec trical characteristics ................................................................................ ................................. 18 9.6. i 2 c? ac electrical characteristics & register map ............................................................................... .................. 19 9.7. factory modes ............................................................................................................ .............................................. 23 9.7.1. factory-mode accessory detection ....................................................................................... .......................... 23 10. reference schematic ....................................................................................................... ................................................ 25 11. layout gu idelines ......................................................................................................... .................................................... 27 11.1. pcb layout guidelines for high-speed usb signal integrity ............................................................... ............... 27 11.2. layout for gsm/tdma buzz reduction ...................................................................................... ......................... 27 11.3. v bus_out load timing re quirements ..................................................................................................... ............... 27 11.4. systems with multiple usb controllers ................................................................................... ............................. 27 physical dimensions ........................................................................................................... ....................................................... 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confidential and propriet ary ? do not distribute ? 2008 fairchild semiconductor corporation www.fairchildsemi.com fsa9280a / fsa9288a ? rev 1.0.3 3 fsa9280a / fsa9288a ? usb port multimedia switch, featuring automatic select and accessory detection block diagram figure 2. block diagram pin configuration figure 3. pin assignments (top view) baseband processor v bus_in micro usb dm_con dp_con gnd id_con hs ? usb intb i2c_scl i2c_sda v ddio dp_host dm_host i 2 c fs ? usb or ? uart audio codec audio_r audio_l rxd txd interrupt fsa9280a mic phone power float detect charger detect switch control and i 2 c slave \ detection ocp,ovp 3:1 ? mux and charge pump v bat adc ? id detect chg_det jig boot charger ? ic v bus_out 7 8 9 10 13 14 15 2 3 16 20 19 18 17 4 id_con dp_con dm_con v bus_in chg_det v bus_out i2c_scl i2c_sda txd boot v ddio jig audio_r audio_l mic dp_host 11 12 5 6 intb v bat dm_host rxd 1 gnd exposed dap
confidential and propriet ary ? do not distribute ? 2008 fairchild semiconductor corporation www.fairchildsemi.com fsa9280a / fsa9288a ? rev 1.0.3 29 fsa9280a / fsa9288a ? usb port multimedia switch, featuring automatic select and accessory detection physical dimensions figure 28. 20-lead ultrathin molded leadless package (umlp), 3 x 4 x 0.55mm, 0.5mm pitch package drawings are provided as a service to customers considering fairchild components. drawings may change in any manner wit hout notice. please note the revision and/or date on the drawing and contact a fairchild semiconductor representative to verify or o btain the most recent revision. package specifications do not expand the terms of fairchild?s worldwide terms and conditions, specifically the warranty therein, which covers fairchild products. always visit fairchild semiconductor?s online packaging area for the most recent package drawings: http://www.fairchildsemi.com /packaging/. please visit fairchild semiconductor?s online packaging area for the most recent tape and reel specifications: http://www.fairchildsemi.com/packaging/3x4umlp20_tnr.pdf . part number operating temperature range top mark package FSA9280AUMX -40 to +85c 9280a 20-lead ultrathin molded leadless package (umlp), 3 x 4 x 0.55mm, 0.5 pitch fsa9288aumx -40 to +85c 9288a 20-lead ultrathin molded leadless package (umlp), 3 x 4 x 0.55mm, 0.5 pitch bottom view top view recommended land pattern side view 2x 2x notes: a. package conforms to jedec mo-220 except where noted. b. dimensions are in millimeters. c. dimensions and tolerances per asme y14.5m, 1994. d. drawing filename: mkt-umlp20arev1. 0.10 c 0.10 c 0.10 cab 0.05 c pin 1 ident 1 6 7 10 0.55 max 0.05 0.00 0.08 c 0.10 c seating plane (0.15) 11 16 17 20 pin1 ident 4.00 3.00 a b c 1.70 1.60 2.70 2.60 20x 0.45 0.35 0.25 0.15 20x 0.50 1.70 2.70 3.80 2.80 0.50 0.30 0.60 20x 20x a e. land pattern recommendation is based on fsc design only
confidential and propriet ary ? do not distribute ? 2008 fairchild semiconductor corporation www.fairchildsemi.com fsa9280a / fsa9288a ? rev 1.0.3 30 fsa9280a / fsa9288a ? usb port multimedia switch, featuring automatic select and accessory detection
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