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ST20138 Arkusz danych(PDF) 3 Page - STMicroelectronics

Numer części ST20138
Szczegółowy opis  PCI/USB ADSL CHIPSET
Download  6 Pages
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Producent  STMICROELECTRONICS [STMicroelectronics]
Strona internetowa  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST20138 Arkusz danych(HTML) 3 Page - STMicroelectronics

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ST70138
September 2004
This is preliminary information on a new product foreseen to be developed. Details are subject to change without notice.
4
HARDWARE FEATURES
SUPPORT DIGITAL SIGNAL PROCESSING
REQUIREMENTS FOR ONE ADSL CPE
CHANNEL (ITU-R)
COMPLIANT WITH ITU 992.1 (ADSL FULL
RATE) ANNEX A (ADSL OVER POTS),
ANNEX B (ADSL OVER ISDN), ITU 922.2
(G.LITE) AND ANSI T1.413.
ENHANCED FTP TRANSFER CAPABILTIES
DIRECT INTERFACE TO USB (USB RELEASE
1.1 SPECIFICATION)
DIRECT INTERFACE TO EXTERNAL 8/16bit
SERIAL MEMORY TO SUPPORT USB
USER'S CONFIGURATION.
DIRECT ANALOG FRONT END INTERFACE
FOR MTC20174
CLOCK & RESET INTERFACE
1.8V AND 3.3V POWER SUPPLY
TTL LOGIC LEVELS COMPATIBLE
POWER MANAGEMENT CAPABILITIES
LOW POWER CONSUMPTION : MAX 0.45W
TQFP144 (ORDER CODE ST70138T -
BACKWARD COMPATIBLE WITH PREVIOUS
ST70137)
LFBGA80 (ORDER CODE ST70138B)
5
DESCRIPTION
Unicorn II is an evolution of the field-proven and
mass deployed Unicorn modem that dramatically
lowers the overall system cost when designing
and producing a USB ADSL modem. The Unicorn
II chipset is designed using cost effective CMOS
technology, further integrating external compo-
nents which leads to even lower E-BOM costs, re-
duced
component
count
and
lower
PCB
complexity; All of this while increasing overall per-
formance. Its proven controller-less and SDRAM-
less architecture is highly competitive and well
suited in today's cost focused modem market.
The Unicorn II chipset is designed to simplify the
development of low-cost ADSL CPE modems for
Windows, Mac and Linux based environments and
enables manufacturers to achieve a very compet-
itive production cost. Due to its controller-less ar-
chitecture and particularly the advantage that it
does not require an external SDRAM in its E-BOM,
the total cost of the external components needed
in the modem is the best in its class. With a low
component count of less then 140 external compo-
nents and small form factor packages, the Unicorn
II easily fits on a standard 2 layer single sided PCB
with small dimensions which is contributes signifi-
cantly to further lowering overall system costs. To-
gether with its low power consumption, high-
speed performance up to 8 Mbps and customiz-
able complete software driver packages, the Uni-
corn II is the ideal choice for USB based ADSL
modems.
The ST70138T/B is the ADSL DMT transceiver
chip of the UNICORN2™ Chipset.
ST70138T in intended to be used as a pin-to-pin
replacement part of the ST70137 device in order
to get advantage from its better cost-structure and
its enhanced FTP transfer capabilities. ST70138T
is packaged in a TQ144 package. Full backward
compatibility with already existing USB PCB de-
signs is assured.
ST70138B, packaged in LFBGA80 is intended for
new PCB designs, which will benefit from exten-
sive E-BOM reduction in the reference design,
mass production friendly EEPROM programma-
tion, enhanced FTP throughput and overall lower
system cost structures.
Eleven years of experience have enabled ST to de-
velop a chipset that offers full compatibility with all
current full-rate and G.lite ADSL standards, USB
standards including plug-and-play support. The Uni-
corn II chipset has a comprehensive driver suite that
supports Windows operating systems from 98 to XP,
Mac operating systems 8 to X and Linux. The Unicorn
is fully interoperable with all major DSLAMs and is
compliant to TR-048 (DSLforum) and ETSI 101 388
performance requirements.
DATA BRIEF
UNICORN II™ USB
CONTROLLERLESS ADSL DMT TRANCEIVER
Figure 2. Packages
Table 1. Order Codes
Part Number
Package
ST70138T
TQFP144
ST70138B
LFBGA80
TQFP144
LFBGA80


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