DSR-4.8
IC BLOCK DIAGRAM/ TERMINAL DESCRIPTION-2
BLOCK DIAGRAM
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SP Vcc
Pre Vcc
BRAKE
MODE
ST
AND-BY
CONTR
OL
LEVEL
SHIFT
LEVEL
SHIFT
Pre GND
Pre GND
TSD
DUTY
CONTROL
HALL AMP/ REVERSE PROTECT
MATRIX
HALL
BIAS
IFG
OUT
1
2
3
4
5
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10
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16
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22
VIN
CURRENT
DETECTER
X2
X2
VMA
C
T
Vc
SPGND
PIN DESCRIPTION
No.
1
2
3
4
5
6
7
8
9
Symbol
Vc
VINTK
SPV
M
2
VINFC
CFCerr1
CFCerr2
LDIN
SPIN
SPRNF
Description
Reference voltage input
Tracking driver input
Spindle driver power supply 2
Focus driver input
Connection with capacitor for error amplifier
Loading driver input
Spindle driver control input
Spindle driver control input
Spindle driver output W
Spindle driver power ground
Spindle driver output U
Spindle driver output V
Hall amp. W positive input
Hall amp. W negative input
Hall amp. V positive input
Hall amp. V negative input
Hall amp. U positive input
Hall amp. U negative input
Spindle driver power supply 1
Hall bias
Frequency generator output
No.
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
Symbol
CTKerr1
CTKerr2
CFIL
VNFFC
VMACT
VNFTK
VOTK+
VOTK-
VOFC-
VOFC+
PreGND
PowGND
LDO-
LDO+
SLO-
SLO+
CTL1
PreVcc
CTL2
OPOUT
SLIN
SPVcc
Description
Connection with capacitor for error amplifier
Connection with capacitor for spindle loop
Feedback for focus driver
Feedback for focus driver
Feedback for tracking driver
Tracking driver negative output
Tracking driver positive output
Focus driver negative output
Focus driver positive output
Pre-ground
BTL block power ground
Loading driver negative output
Loading driver positive output
Sled driver negative output
Sled driver positive output
Driver logic control input 1
Loading block power supply
Driver logic control input 2
OP amp output
Sled driver input
Spindle block control power supply
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TEL 13942296513
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