SM9403BM
NIPPON PRECISION CIRCUITS INC.
DVDRAM Servo-amplifier LSI
OVERVIEW
The SM9403BM is a DVDROM and DVDRAM servo preprocessor LSI, designed for double-speed format
DVDROM and DVDRAM drives.
The SM9403BM is fabricated using a BiCMOS process, and incorporates an analog signal processing circuit
that generates signals needed by the digital servo processor, a DPD signal processing circuit (DVDROM), and
a CAPA (Complementary Allocated Pit Address) detection circuit (DVDRAM) all in a single chip. It operates
from a single 5 V supply, and is available in 36-pin plastic SSOP packages.
FEATURES
s
s
s
s
s
s
s
s
s
s
s
s
s
PINOUT
36-pin SSOP (Top View)
DPD signal processor
Tracking error signal output
Focus error signal output
Tracking error signal sample-and-hold
Focus error signal sample-and-hold
CAPA detection function
Track count pulse generator
Off-track detection
2V and 4V reference voltage generator
Serial interface for setting internal parameters
Sleep-mode function
Single 5 V supply
36-pin plastic SSOP
NC
NC
FER
FHOLD
FSUB
ISET
DPDD
DPDC
DPDB
DPDA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
DPDG
DPDI
DEFECT
DGND
SCLK
SDATA
SENB
DVCC
CAPSEEK
CAPSEL
CAPIN
AVCC
CAPOUT
CAPAREA
TRP
TROFF
VREF2
VREF4
SM9403BM
NPC
APPLICATIONS
s
s
AGND
MMTI
Double-speed DVDROM drives
Double-speed DVDRAM drives
CAPAN
CAPAP
CAPLFC
ORDERING INFORMATION
D e vice
SM9403BM
P ackag e
36-pin SSOP
TSUB
THOLD
TRE
NIPPON PRECISION CIRCUITS—1
SM9403BM
PACKAGE DIMENSIONS
(Unit: mm)
15.20 to 15.40
0.85
0.63 ± 0.10
0 to 8°
7°
7.40 to 7.60
R0.63 to 0.89
0.51
±
0.20 45°
0.51 to 1.01
0.23 to 0.32
0.29 to 0.39
0.80
0.10 to 0.30
2.44 to 2.64
BLOCK DIAGRAM
DEFECT
FSUB
DPDA
DPDB
S/H
LPF
*
Equalizer
Delay
Phase
comparator
Voltage
reference
Serial
interface
LPF
DVCC
DGND
SCLK
SDATA
SENB
DPDC
DPDD
ISET
SWB
TSUB
S/H
*
THOLD
*
CAPAP
CAPAN
Analog signal
processor
Mono-multiviblator
S/H
control
LPF
SWA
Track Pulse
Generator
TRE
TRP
TROFF
VREF2
NIPPON PRECISION CIRCUITS—2
10.11 to 10.51
7°
FHOLD
CAPLFC
VREF4
VREF2
AGND
DPDG
AVCC
DPDI
FER
MMTI
CAPIN
CAPOUT
CAPAREA
CAPSEL
CAPSEEK
SM9403BM
PIN DESCRIPTION
Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
Name
NC
NC
FER
FHOLD
FSUB
ISET
DPDD
DPDC
DPDB
DPDA
AG N D
MMTI
C A PA N
C A PA P
CAPLFC
TSUB
THOLD
TRE
VREF4
VREF2
TROFF
TRP
C A PA R E A
CAPOUT
AV C C
CAPIN
CAPSEL
CAPSEEK
DV C C
SENB
S D ATA
SCLK
DGND
DEFECT
DPDI
DPDG
I/O
1
O
O
O
–
I
I
I
I
I
I
–
I
I
I
–
I
–
O
O
O
O
O
O
O
–
O
Ipd
Ipd
–
I
I/O
I
–
Ipd
I
I
No connection
No connection
Focus error signal output
Focus error hold capacitor connection
Focus error signal input
DPD signal equalizer, reference current set resistor connection
DPD signal input D
DPD signal input C
DPD signal input B
DPD signal input A
Analog circuit ground
M o n o - m ultivibrator time-constant set resistor connection
ID data signal differential inverting input
ID data signal differential non-inverting input
Slice-level detect capacitor connection
Tracking error signal input
Tracking error hold capacitor connection
Tracking error signal output
4V reference voltage output
2V reference voltage output
Off-track detect signal output. LOW when off-track.
Track count pulse output. HIGH-level pulse for land to outer tracking.
ID interval detect signal output. ID interval detected when HIGH.
Outer offset ID detect signal output. Outer offset ID interval detected when HIGH.
Analog circuit pow er supply
Inner offset ID detect signal output. Inner offset ID interval detected when HIGH.
ID interval signal input. ID interval selected when HIGH.
Seek operation signal input. Seek operation selected when HIGH.
Logic circuit pow er supply
Serial interface enable input. Enabled when HIGH.
Serial interface data input/acknowledge output
Serial interface clock input
Logic circuit ground
Defect position signal input. Defect position indicated when HIGH.
DPD signal hold delay set resistor connection
DPD signal phase difference to voltage converter coefficient set resistor connection
Function
1. I = input, Ipd = Input with built-in pull-down resistor, I/O = input/output (N-channel open-drain when output), O = output
NIPPON PRECISION CIRCUITS—3
SM9403BM
SPECIFICATIONS
Absolute Maximum Ratings
GND = 0 V
P arameter
Supply voltage range
Input voltage range
Operating temperature range
Storage temperature range
Pow er dissipation
Soldering temperature
Soldering time
Symbol
V
CC
V
IN
T
opr
T
stg
P
D
T
sld
t
sld
Condition
Rating
−0.5
to 7.0
−
0.5 to V
C C
+ 0.5
0 to 70
−40
to 125
250
260
10
Unit
V
V
°C
°C
mW
°C
s
Recommended Operating Conditions
GND = 0 V
P arameter
Specifications supply voltage range
Operating supply voltage range
Operating temperature range
Symbol
V
CC
V
CC
T
opr
Condition
Rating
4.75 to 5.25
4.5 to 5.5
0 to 70
Unit
V
V
°C
Recommended External Components
Pin No.
4
6
12
15
17
19
20
35
36
Pin name
FHOLD
ISET
MMTI
CAPLFC
THOLD
VREF4
VREF2
DPDI
DPDG
Component
1000pF capacitor
47k
Ω
resistor
0.01µF capacitor
120k
Ω
resistor
0.01µF capacitor
1000pF capacitor
0.1µF capacitor
0.1µF capacitor
47k
Ω
resistor
33k
Ω
resistor
Tolerance
K (±10%)
±1%
Z (+80% to
−2
0 % )
±1%
Z (+80% to
−2
0 % )
K (±10%)
Z (+80% to
−2
0 % )
Z (+80% to
−2
0 % )
±1%
±1%
NIPPON PRECISION CIRCUITS—4
SM9403BM
DC Electrical Characteristics
V
CC
= 5V ± 5%, GND = 0V, T
a
= 0 to 70°C
Rating
P arameter
Symbol
I
C C 1
I
C C 2
Current consumption
1
I
C C 3
I
C C 4
∆I
C C
C A P S E E K , C A P S E L , D E F E C T, SENB, SDATA,
SCLK HIGH-level input voltage
C A P S E E K , C A P S E L , D E F E C T, SENB, SDATA,
S C L K L OW -level input voltage
C A P S E E K , C A P S E L , D E F E C T H I G H - l evel input
current
S E N B , SDATA, SCLK HIGH-level input current
C A P S E E K , C A P S E L , D E F E C T, SENB, SDATA,
S C L K L OW -level input current
C A PA R E A , C A P I N , C A P O U T, T R P, T R O F F
HIGH-level output voltage
C A PA R E A , C A P I N , C A P O U T, T R P, T R O F F
L O W -level output voltage
S D ATA L OW -level output voltage
V
IH
V
IL
I
IH1
I
IH2
I
IL
V
OH
V
OL1
V
OL2
V
IN
= V
C C
V
IN
= V
C C
V
IN
= G N D
I
O H
=
−0
. 2 m A
I
O L
= 0.8mA
I
O L
= 7mA
Condition
min
Operating mode
Sleep mode 1
Sleep mode 2
Sleep mode 3
I
C C 1
−
I
C C 2
–
–
–
–
9
0.8V
C C
–
50
–
−3
V
C C
−
0.2
–
–
typ
28
17
2.0
–
–
–
–
100
–
–
–
–
–
max
34
21
2.6
1.0
–
–
0.2V
C C
200
3
–
–
0.4
1.0
V
V
µA
µA
µA
V
V
V
mA
Unit
1. 33k
Ω
resistor connected between DPDG and AG N D
47k
Ω
resistor connected between DPDI and AG N D
120k
Ω
resistor connected between MMTI and AG N D
47k
Ω
resistor connected between ISET and AG N D
1000pF capacitor connected between FHOLD and AG N D
1000pF capacitor connected between T H O L D a n d AG N D
0.1µF capacitor connected between VREF4 and AG N D
0.1µF capacitor connected between VREF2 and AG N D
0.01µF capacitor connected between CAPLFC and AG N D
0.01µF capacitor connected between ISET and AG N D
C A PA P, CAPA N , D P DA , D P D B, D P D C, D P D D, FSUB, TSUB connected to VREF2 or other 2V supply.
S E N B , SDATA, SCLK connected to GND; All other pins (excluding supply and ground pins) open circuit.
Sleep mode 1: DPD system only in sleep condition.
Sleep mode 2: All blocks except reference supply voltage generator in sleep condition.
Sleep mode 3: All blocks in sleep condition.
NIPPON PRECISION CIRCUITS—5
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