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
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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
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7
8
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10
11
12
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18
36
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29
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27
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19
DPDG
DPDI
DEFECT
DGND
SCLK
SDATA
SENB
DVCC
CAPSEEK
CAPSEL
CAPIN
AVCC
CAPOUT
CAPAREA
TRP
TROFF
VREF2
VREF4
SM9403BM
NPC
APPLICATIONS
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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
NPC [ NIPPON PRECISION CIRCUITS INC ]
