ChipFind - документация

Электронный компонент: MTC20174-TQ-C1TR

Скачать:  PDF   ZIP

Document Outline

1/6
ST20138
Unicorn II
September 2004
This is preliminary information on a new product foreseen to be developed. Details are subject to change without notice.
1
DESCRIPTION
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 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 and PCI based
ADSL modems.
The Unicorn II chipset consists of the digital
ST70138 chip and the MTC20174 analog front
end.
The ST70138 is supplied in two packages,
TQFP144 and LBGA80. The ST70138T packaged
in TQ144 is a pin-to-pin compatible version of the
ST70137 enabling manufacturers to benefit direct-
ly from the cost and performance advantages that
the ST70138 brings.
The TQ144 flavor brings out both the USB and PCI
interfaces. Supplied in a compact USB-only
LBGA80 package, the ST70138B brings addition-
al cost advantages to new designs.
The MTC20174 Analog Front End (AFE) with inte-
grated line driver is designed for DMT based
ADSL CPE modems compliant with ANSI T1.413
issue 2, ITU G.992.1 (G.dmt) and ITU G.992.2
(G.lite), for Annex A, B and C.
DATA BRIEF
PCI/USB ADSL CHIPSET: ST70138 + MTC20174
FOR ULTRA LOW COST ADSL MODEM
Figure 1. Chipset Architecture Overview
ST70138
DMT/ATM
MTC20174
AFE
Line Interface
Phone Line
PC/Mac
USB
PCI
EEPROM
(0-16KB)
Optional
Rev. 1
ST20138 - Unicorn II
2/6
2
STANDARDS COMPLIANCE AND INTEROPERABILITY
Eleven years of experience have enabled ST to develop a chipset that offers full compatibility with all cur-
rent full-rate and G.lite ADSL standards, USB standards including plug-and-play support. The Unicorn II
chipset has a comprehensive driver suite that supports Windows, Mac and Linux. The Unicorn is fully in-
teroperable with all major DSLAMs and is compliant to TR-048 (DSLforum) and ETSI 101 388 perfor-
mance requirements.
2.1 Protocols Supported
RFC 2684 bridged (LLC/SNAP and VCMUX)
- replacing RFC 1483
RFC 2684 routed (LLC/SNAP and VCMUX)
- replacing RFC 1483
RFC 2364 PPP over ATM
(LLC and VCMUX)
RFC 2516 PPP over Ethernet
(LLC and VCMUX)
RFC 2225 Classical IP over ATM
2.2 ATM and ATM adaptation support
VPI range: 0 - 255
VCI range: 32 - 65535.
UNI 3.0, 3.1, 4.0 signaling
TR37 (auto-configuration)
UBR, CBR (with customizable parameters)
AAL0, AAL5
3
SOFTWARE SUITE
Unicorn shipping package includes a complete set of field proven software drivers and tools for Windows,
Mac and Linux, including PC software for modem control and communications protocols. The software
drivers are fully configurable and include diagnostic tools which are specifically developed to minimize op-
erator helpdesk interference.
3.1 Software interface
NDIS WAN or NDIS5-ATM PCI driver and USB driver
MAC / Linux OS: Open Transport driver
3.2 OS support
Win98, Win98SE, WinME, Win2K, WinXP
MAC OS 8.6 till 10.3.x
Up to Linux kernel 2.6.x
3.3 Hardware interfaces
USB connector or PCI interface
RJ11 connector
3.4 Maximum supported speed
8Mbps downstream
1Mbps upstream
3/6
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 UNICORN2TM 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 IITM USB
CONTROLLERLESS ADSL DMT TRANCEIVER
Figure 2. Packages
Table 1. Order Codes
Part Number
Package
ST70138T
TQFP144
ST70138B
LFBGA80
TQFP144
LFBGA80
4/6
MTC20174
September 2004
This is preliminary information on a new product foreseen to be developed. Details are subject to change without notice.
6
FEATURES
Fully Integrated AFE and Line Driver for ADSL
Overall 12 bit resolution, 1.1MHz signal
bandwidth
8.8 MS/s ADC
8.8 MS/s DAC
Differential analog I/O
Accurate continuous-time channel filtering
5
th
& 4
th
order tunable continuous-time receive
and transmit filters respectively
Support for multiple ADSL standards:
ANSI T1.413 Issue 2
ITU G.992.1 (G.dmt)
Annex A
Annex B (ADSL over ISDN)
Annex C (ADSL over ISDN SBM/DBM/
G.dmt)
ITU G.992.2 (G.lite)
Highest performance:
Operation up to 18 kft (26 AWG)
More than 8 Mbps downstream and 832 Kbps
upstream up to 8 kft (26 AWG)
More than 3 Mbps downstream and 760 kbps
upstream up to 12 kft (26 AWG)
100 pin TQFP package allows high-density
board design
Power dissipation of 900mW at 25C, typical
7
APPLICATIONS
The MTC20174 is an ADSL Analog Front-End
(AFE) with integrated Line-Driver for ATU-R appli-
cations offering Annex A, B and C.
8
GENERAL DESCRIPTION
The MTC20174 Analog Front End (AFE) with inte-
grated line driver is designed for DMT based
ADSL CPE modems compliant with ANSI T1.413
issue 2, ITU G.992.1 (G.dmt) and ITU G.992.2
(G.lite), for Annex A, B and C.
It is intended to be used with the MTC20166 DMT
modem and ATM framer as part of the MTK20170
chipset, but may also be used to support other
ADSL signal processors. It includes the following
parts:
A 12-bit 8.8Msamples/s DAC
A 13-bit 8.8Msamples/s ADC
Tunable low-pass and high-pass filters
Low-noise PGAs
A TX Pre-Amplifier
A TX Line-Driver
A fully integrated DCXO
A PLL-based frequency doubler
A filter tuning circuit
A dying gasp circuit
A digital module for control, test and interface
The following figure provides a graphical repre-
sentation of the MTC20174 functional blocks with
an additional separation in RX and TX path.
The analog and digital part have separated 3.3V
power supplies. In addition some part of the ana-
log section of the MTC20174 has a power supply
of 5V.
The typical total power consumption of the
MTC20174 is 900mW for 12dBm of line power (full
operation) at 250C.
The package is a 100 pin TQFP.
DATA BRIEF
ADSL ANALOG FRONT END WITH INTEGRATED LINE
DRIVER FOR CPE APPLICATIONS
Figure 3. Package
Table 2. Order Codes
Part Number
Package
Temperature
MTC20174-TQ-C1
TQFP100
0 to 70C
MTC20174-TQ-C1TR
Tape & Reel
0 to 70C
TQFP100
5/6
ST20138 - Unicorn II
Table 3. Revision History
Date
Revision
Description of Changes
September 2004
1
First Issue