product brief november 2001 VC2010 high-performance spindle/vcm control features vcm actuator predriver transconductance amplifier with selectable class b or ab mode 14-bit dac for actuator current control regulated 3-stage retract on voltage fault or com- mand programmable on-chip transconductance compen- sation reduces external component count spindle control motor inductance sense mode for determination of motor start position microprocessor controlled ramp-to-start speed in start mode sinusoidal current mode or 6-state commutation in run mode programmable wave shape for optimized acoustic performance transconductance configuration in run mode, using pwm for efficiency peak current-limit control in start mode, using con- stant off-time method 10-bit dac with 4-step gain ranging fast restart from partial spindown, using phase fre- quency comparison of bemf automatic spindle dynamic brake at programmable rpm after retract serial port interface 30 mhz read/write serial port 3.3 v ttl compatible digital i/o, 5 v cmos input tolerant voltage monitor, system reset, and auxiliary supplies 5 v, 12 v, and 3.3 v undervoltage fault compara- tors power-on reset signal output 3.3 v regulator with voltage margin control and current limit resistor adjustable negative voltage regulator for mr preamplifiers programmable output voltage switching and linear regulators with undervoltage monitoring other features 12-bit dac to drive external microactuator driver 10-bit adc to digitize selected internal and exter- nal signals special diagnostic features for observation of on- chip signals supports 3-stage constant voltage retract pin information 2539 (f) figure 1. VC2010 pin diagram (80-pin tqfp) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 cp vmsw pump gndsw nc uhsd pu ulsd vlsd pv vhsd gndsw dmux whsd pw wlsd nrg v5 nc nreg 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 svrib svria svrs porz gnda3 svrg prg vmd pri preg spd gndd spc spe aclk soc seq retz nc adc 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 spb spa nc nc gpb gpa gnb gna vcmb vcma rsv vma vref nc gndref nc nc nc nc testen 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 swg nc cvco rc vmag rsm lvrb lvrs nc udac sgnd amux aux1 aux2 vck12 vck5 gnda2 nc gnda1 rbias VC2010
agere systems inc. reserves the right to make changes to the product(s) or information contained herein without notice. no liability is assumed as a re sult of their use or application. copyright ? 2001 agere systems inc. all rights reserved november 2001 pb02-022mtrc for additional information, contact your agere systems account manager or the following: internet: http://www.agere.com e-mail: docmaster@agere.com n. america: agere systems inc., 555 union boulevard, room 30l-15p-ba, allentown, pa 18109-3286 1-800-372-2447 , fax 610-712-4106 (in canada: 1-800-553-2448 , fax 610-712-4106) asia: agere systems hong kong ltd., suites 3201 & 3210-12, 32/f, tower 2, the gateway, harbour city, kowloon tel. (852) 3129-2000 , fax (852) 3129-2020 china: (86) 21-5047-1212 (shanghai), (86) 10-6522-5566 (beijing), (86) 755-695-7224 (shenzhen) japan: (81) 3-5421-1600 (tokyo), korea: (82) 2-767-1850 (seoul), singapore: (65) 778-8833 ,taiwan: (886) 2-2725-5858 (taipei) europe: tel. (44) 7000 624624 , fax (44) 1344 488 045 product brief november 2001 high-performance spindle/vcm control VC2010 block diagram 2537 (f) figure 2. VC2010 block diagram serial port supply monitor chip local chip clk and power-on- reset generator ?5 v; + 3.3 v switching regulators booster spindle control supply osc supply and blocking fet control and internal regulator vcm actuator driver vcm dac retract and brake sequence adc test/view aux switching and linear regulators and monitoring aanddmux bg ref microactuator and bias dac spe spd spc vcc (+12 v) v5 vdd (+5 v) vck12 vck5 porz vdd (+5 v) nrg nreg prg vdd (+5 v) (?5 v) pri preg vdd (+5 v) svrg svria svrib svrs lvrb lvrs aux1 aux2 seq soc aclk adc amux dmux test vref rbias udac programable switching supply (+3.3 v) programable linear supply ?20 act +20 act swg vm pump cp vcc (+12 v) vm uhsd vhsd whsd pu pv pw vlsd ulsd wlsd rsm vmag 100 ? 100 ? 100 ? sgnd cvco rc rcss spindle motor vcm rcs gpb gpa spb rsv vcma spa vcmb gna gnb retz
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