SM9403BM Datasheet, PDF (1/18 Pages) Nippon Precision Circuits Inc – DVDRAM Servo-amplifier LSI

NIPPON PRECISION CIRCUITS INC.
SM9403BM
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 DPD signal processor
s Tracking error signal output
s Focus error signal output
s Tracking error signal sample-and-hold
s Focus error signal sample-and-hold
s CAPA detection function
s Track count pulse generator
s Off-track detection
s 2V and 4V reference voltage generator
s Serial interface for setting internal parameters
s Sleep-mode function
s Single 5 V supply
s 36-pin plastic SSOP
APPLICATIONS
s Double-speed DVDROM drives
s Double-speed DVDRAM drives
ORDERING INFORMATION
Device
SM9403BM
Package
36-pin SSOP
PINOUT
36-pin SSOP (Top View)
NC 1
NC 2
FER 3
FHOLD 4
FSUB 5
ISET 6
DPDD 7
DPDC 8
DPDB 9
DPDA 10
AGND 11
MMTI 12
CAPAN 13
CAPAP 14
CAPLFC 15
TSUB 16
THOLD 17
TRE 18
36 DPDG
35 DPDI
34 DEFECT
33 DGND
32 SCLK
31 SDATA
30 SENB
29 DVCC
28 CAPSEEK
27 CAPSEL
26 CAPIN
25 AVCC
24 CAPOUT
23 CAPAREA
22 TRP
21 TROFF
20 VREF2
19 VREF4
NIPPON PRECISION CIRCUITS—1