Product Brief
November 2001
VC2010
High-Performance Spindle/VCM Control
Features
VCM Actuator Predriver
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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
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
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Spindle Control
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Other Features
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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
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
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Pin Information
SWG
NC
CVCO
GNDA1
RC
VMAG
RSM
LVRB
LVRS
NC
UDAC
RBIAS
SGND
AMUX
AUX1
AUX2
VCK12
VCK5
GNDA2
NC
CP
VMSW
PUMP
GNDSW
NC
UHSD
PU
ULSD
VLSD
PV
VHSD
GNDSW
DMUX
WHSD
PW
WLSD
NRG
V5
NC
NREG
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
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VC2010
Serial Port Interface
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30 MHz read/write serial port
3.3 V TTL compatible digital I/O, 5 V CMOS input
tolerant
SPB
SPA
NC
NC
GPB
GPA
GNB
GNA
VCMB
VCMA
RSV
VMA
VREF
NC
GNDREF
NC
NC
NC
NC
TESTEN
SVRIB
SVRIA
SVRS
NC
PORZ
GNDA3
SVRG
PRG
VMD
PRI
PREG
ADC
SPD
GNDD
SPC
SPE
ACLK
SOC
SEQ
RETZ
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
2539 (F)
Figure 1. VC2010 Pin Diagram (80-Pin TQFP)
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